Emerson Cs800 Series Pressure Reducing Regulators Data Sheet
2015-03-30
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Bulletin 71.1:CS800
November 2014
D103140X012
www.fisherregulators.com
Figure 1. Typical CS800 Series Pressure Reducing Regulator
Features and Bene ts
• Flow-optimized disks provide the maximum ow
for your application
• Largest number of overpressure protection
offerings in the industry
• Wide variety of body sizes and end connections
• Body materials available in gray cast iron,
ductile iron and steel
• Fixed Factor/Pressure Factor Measurement (PFM)
accuracy capabilities
• Only standard tools required for pressure
adjustment and ori ce removal
• Simpli ed maintenance
CS800 Series Commercial/Industrial Pressure
Reducing Regulators
TYPE CS800 REGULATOR
P1235
P1521
TYPE CS803 REGULATOR WITH TRUE-MONITOR ™ PROTECTION
P1234
TYPE CS800IQ WITH HIGH CAPACITY RELIEF
P1692
TYPE CS804IT REGULATOR WITH INTEGRAL
TYPE VSX8 SLAM-SHUT MODULE
Bulletin 71.1:CS800
2
Specications
The Specications section lists the specications for the CS800 Series Regulators. The following information is
stamped on the nameplate of CS800 Series: Type Number, Maximum Outlet Pressure and Spring Range.
Available Congurations
See Table 1
Body Sizes, Material, End Connection and
Pressure Rating(1)
See Table 2
Maximum Inlet Pressures(1)
Emergency: 175 psig / 12.1 bar
Operating: See Table 3
Maximum Outlet Pressure(1)
Emergency (Casing): 15 psig / 1.0 bar
To avoid internal parts damage: 3 psig / 0.21 bar
differential above outlet pressure setting
Outlet Pressure Ranges(1)
Regulator: 3.5 in. w.c. to 10 psig /
9 mbar to 0.69 bar
See Table 4
Internal Relief Performance
Approximate Internal Relief Start-to-Discharge
Point: See Table 5
Relief Performance:
For Standard Internal Relief: See Figures 9, 11,
13, 15, 17 and 19
For High Capacity Internal Relief: See Figures 10,
12, 14, 16, 18 and 20
Token Relief Performance
Approximate Token Relief Start-to-Discharge:
See Table 5
Maximum Token Relief Discharge Capacities:
See Figure 8
Flow Capacities
With Standard Construction:
See Tables 14 through 16 and 18 through 51
With True-Monitor™ or Slam Shut:
See Tables 14 through 51
With Secondary Seat™ Construction:
See Tables 52 through 66
With Low Inlet Option(3):
See Tables 17 and 53
Orice Sizes, Flow Coefcients and
IEC Sizing Coefcients
See Table 3
Temperature Capabilities(1)(2)
-20 to 150°F / -29 to 66°C
Spring Case Vent Connection
Internal Relief: 1 NPT
High Capacity Relief: 2-1/2 NPT
External Registration Connection
3/4 NPT
Spring Case Vent and Body Orientation
See Figure 21
Secondary Seat Approximate Lockup Values and
Associated Internal Relief Start-to-Discharge:
See Table 6
TM600 Series True-Monitor Performance(1)
Inlet Pressure Ratings
Maximum Operating: Up to 125 psig / 8.6 bar
Maximum Emergency: 175 psig / 12.1 bar
Outlet Pressure Range:
12 in. w.c. to 7.5 psig / 30 mbar to 0.52 bar
Type VSX8 Slam-Shut Device(1)
Maximum Inlet Pressure: 175 psig / 12.1 bar
Maximum Operating Inlet Pressure:
175 psig / 12.1 bar
Construction Materials
CS800 Series Main Valve and Actuator
Body: Gray Cast Iron, Ductile Iron or Steel
Body O-ring: Nitrile (NBR)
Closing Cap: Aluminum
Adjusting Screw: Aluminum, Brass or Zinc-plated steel
Upper and Lower Case: Aluminum
Valve Stem: Aluminum or Zinc-plated steel
Diaphragm Head: Zinc-plated steel
Orice:
Standard: Aluminum
Secondary Seat: Brass
Pusher Post or Internal Relief Valve Seat:
Aluminum or Zinc-plated steel
Diaphragm and Disk: Nitrile (NBR)
Control Spring: Stainless steel or Steel
Relief Valve Spring: Stainless steel
Relief Valve Spring Retainer: Aluminum or
Zinc-plated steel
Vent Screen: Stainless steel
Retaining Ring: Stainless steel or
Zinc-plated steel
Lever Pin: Stainless steel or hardened steel
Spring Seat: Aluminum
Lever: Steel
1. The pressure/temperature limits in this Bulletin or any applicable standard or code limitation should not be exceeded.
2. Product has passed Emerson Process Management Regulator Technologies, Inc. testing for lockup, relief start-to-discharge and reseal down to -40 degrees.
3. Applies to Capacities with Low Inlet Option, which offers Enhanced Flow Performance at Low Inlet pressures for the 2 in. / DN 50 body with 5.5 to 8.5 in. w.c. / 13 to 21 mbar spring range.
- continued -
Bulletin 71.1:CS800
3
Specications (continued)
Construction Materials (continued)
Type TM600 True-Monitor™ Actuator
Diaphragm Case, Spring Case and Balanced Port
Assembly Housing: Aluminum
Diaphragm Retainer and Diaphragm Head:
Zinc-plated Steel
Valve Stem: Aluminum
Diaphragm: Nitrile (NBR)
Disk Holder and Disk Retainer: Brass
Disk/Seat Contact: Nitrile (NBR)
Monitor Stem: Stainless steel
Middle Diaphragm Retainer: Zinc-plated steel
Control Spring: Stainless steel
Vent Screen: Stainless steel
Vent Retaining Ring: Zinc-plated steel
Closing Cap: Aluminum
Adjusting Screw: Aluminum
O-rings: Nitrile (NBR)
Type VSX8 Slam-Shut Device
Diaphragm Case, Spring Case, Diaphragm Plate
and Valve Stem: Aluminum
Diaphragm and Disk: Nitrile (NBR)
Control Spring: Music Wire or Stainless steel
Construction Materials (continued)
Type VSX8 Slam-shut Device (continued)
Vent Screen: Stainless steel
Vent Screen Retainer: Zinc-plated steel
Closing Cap: Aluminum
Adjusting Screw: Aluminum
Designed, Tested and Evaluated Consistent with:
ASME B16, ASME Section VIII DIV I and
ASTM B117 (Corrosion Resistance)
Approximate Weights
With Threaded Body
Type CS800/CS820: 25 lbs / 11 kg
Type CS803/CS823: 34 lbs / 15 kg
Type CS804/CS824: 31 lbs / 14 kg
Type CS805/CS825: 26 lbs / 12 kg
Type CS806/CS826: 26 lbs / 12 kg
High-Pressure Types:
For CS85x add 2 lbs / 0.9 kg to Types
listed above
With Flanged Body
Add 11 lbs / 5.0 kg to weights listed above
Table 1. Available Congurations
TYPE NUMBER OPTIONS
C S 8
OUTLET PRESSURE CONSTRUCTION
0Low Pressure Applications (Outlet Pressure: 3.5 to 30 in. w.c. / 9 to 75 mbar)
2Medium Pressure Applications (Outlet Pressure: 1 to 5.5 psig / 69 mbar to 0.38 bar)
5High Pressure Applications (Outlet Pressure: 5 to 10 psig / 0.34 to 0.69 bar)(1)
OVERPRESSURE PROTECTION MODULE
0Without Overpressure Protection Module
3With Integral True-Monitor Module(4)
4With Slam-shut Module(4)
5With Secondary Seat™ Protection
6With Secondary Seat Protection with controlled bleed to indicate Secondary Seat is functioning(2)
PRESSURE REGISTRATION
I Internal Registration
E External Registration(3)
RELIEF
NNon-Relieving
R Internal Relief
QHigh-Capacity Relief
TToken Relief
L Low Flow Token Relief
Example: Type Number CS800IR: Type CS800 regulator without Overpressure Protection Module with Internal Pressure
Registration and with Internal Relief.
1. High-pressure Construction is not available with True-Monitor Protection, Secondary Seat Protection or Relief.
2. Available only with Internal Relief or High-Capacity Relief Constructions.
3. Available only with Non-Relieving or Token Relief Constructions.
4. Reference Instruction Manual D103126X012 for information regarding the Type TM600 Integral True-Monitor or Instruction
Manual D103127X012 for Type VSX8 safety Slam-shut module.
Bulletin 71.1:CS800
4
Figure 2. Internal View of CS800 Series with High Capacity Relief
Introduction
The CS800 Series direct-operated, spring-loaded
regulators have been engineered to t a multitude
of commercial and industrial pressure-reducing
applications. This exibility is provided by the
numerous body sizes and end connections, outlet
pressure settings, ori ce sizes, as well as the option
for internal or external pressure registration.
In addition to application exibility, the CS800 Series
offers multiple overpressure protection options:
Overpressure Protection
Options Available
• Internal Relief – Provides overpressure protection
to the downstream system by relieving gas through
the diaphragm assembly to atmosphere in the
event of an overpressure situation.
• High-Capacity Internal Relief – Provides an
increase in relief performance over internal relief
thereby offering a signi cant improvement in the
level of overpressure protection to the downstream
system in the event of an overpressure occurrence.
RELIEF VALVE SEAT
VENT STABILIZER
VALVE DISK
ORIFICE
DIAPHRAGM ASSEMBLY
ADJUSTING SCREW
LEVER
CONTROL SPRING
VALVE STEM
RELIEF SPRING
P1002
• True-Monitor™ Protection – Combines the
operation of a conventional two-regulator wide-
open monitor set into one body. Provides a second
monitoring regulator to control downstream
pressure. In event of loss of downstream pressure
control by the primary regulator due to damage
to the lever, downstream sense line, ori ce, disk,
diaphragm, etc., the monitoring regulator will
assume control of the downstream pressure and
regulator ow.
• Secondary Seat™ Protection – Provides a
solution to the most common cause of regulators
failing to shut off by employing a secondary seating
surface to provide shutoff in the event the primary
ori ce seating surface becomes damaged or
blocked. See page 15 for additional information.
• Slam-Shut Protection – Discontinues gas service
by shutting the gas off if there is an overpressure
or underpressure condition.
Overpressure Relief
• Token Relief – Provides overpressure relief via a
small capacity or token relief that relieves minor
overpressure caused by thermal expansion or
minor nicks in the ori ce or disk.
Bulletin 71.1:CS800
5
Table 3. Inlet Pressure Ratings and Flow and Sizing Coefcients
ORIFICE SIZE
MAXIMUM OPERATING INLET PRESSURE
TO OBTAIN OPTIMUM PERFORMANCE MAXIMUM
EMERGENCY INLET
PRESSURE
WIDE-OPEN FLOW
COEFFICIENTS IEC SIZING COEFFICIENTS
psig Setpoints In. w.c. Setpoints
In. mm psig bar psig bar psig bar CgCvC1XTFLFD
1/4(1) 6.4(1) 125 8.6 125 8.6 175 12.1 50 2.1 24.6 0.38 0.89 0.99
3/8 9.5 125 8.6 125 8.6 175 12.1 110 3.8 29.5 0.55 0.89 0.90
1/2 13 100 6.9 100 6.9 175 12.1 210 7.2 29.5 0.55 0.89 0.93
5/8 16 80 6.5 60 4.1 175 12.1 320 10.1 31.8 0.64 0.89 0.88
3/4 19 80 6.5 60 4.1 175 12.1 450 13.3 34 0.73 0.89 0.84
7/8 22 60 4.1 50 3.4 175 12.1 600 16.7 36 0.82 0.89 0.81
1(1) 25(1) 30 2.1 25 1.7 175 12.1 765 20.1 38.1 0.92 0.89 0.77
1-3/8(1)(2) 35(1)(2) 15 1.0 15 1.0 175 12.1 1125 29.8 37.7 0.90 0.89 0.76
1. Not available on the Types CS805, CS806, CS825 and CS826.
2. Not available on the Types CS803 and CS823.
Table 2. Body Sizes, Materials, End Connections and Maximum Cold Working Pressure Ratings(5)
TYPE BODY MATERIAL END CONNECTION BODY SIZE FACE-TO-FACE DIMENSION BODY INLET PRESSURE RATING
In. DN In. mm psig bar
CS800, CS805,
CS806, CS820,
CS825, CS826 and
CS850
Gray Cast Iron
NPT
1-1/4 - - - - 6.12 155
175 12.1
1-1/2 - - - - 6.12 155
2(1) - - - - 6.12 155
2- - - - 6.12 155
CL125 FF 250 7.5 191 175 12.1
250 10 254
CS800(3), CS820(3),
CS850(3), CS803,
CS823, CS804,
CS824 and CS854
Gray Cast Iron NPT 2(2) - - - - 6.12 155 175 12.1
Ductile Iron
NPT
1-1/4(4) - - - - 6.12 155
250 17.21-1/2 - - - - 6.12 155
2- - - - 6.12 155
Rp 2- - - - 6.12 155 250 17.2
CL125 FF / CL150 FF
250 7.5(4) 191(4)
250 17.2250 10 254
250 10.5 267
PN 10/16 250 7.5(4) 191(4)
232 16
250 10 254
WCC Steel
NPT
1-1/4(4) - - - - 6.12 155
290 201-1/2 - - - - 6.12 155
2- - - - 6.12 155
Rp 2- - - - 6.12 155 290 20
CL150 RF 250 10 254 290 20
PN 10/16 250 10 254 232 16
1. Standard on Types CS800, CS820 and CS850.
2. Standard on Types CS803, CS804, CS823, CS824 and CS854.
3. If a ductile iron or steel body material is selected without an Integral True-Monitor™ or Slam-shut Overpressure Protection (OPP) device, the port located at the bottom of the body will
receive an aluminum plug.
4. Not available on Types CS804, CS824 and CS854.
5. The pressure/temperature limits in this Bulletin or any applicable standard or code limitation should not be exceeded.
Bulletin 71.1:CS800
6
Table 5. Approximate Internal Relief Valve Start-to-Discharge Pressure Above Setpoint
Table 4. Outlet Pressure Ranges
TYPE OUTLET PRESSURE RANGE COLOR CODE PART NUMBER SPRING WIRE DIAMETER SPRING FREE LENGTH
In. w.c. mbar In. mm In. mm
CS800, CS803,
CS804, CS805
and CS806
3.5 to 6(1) 9 to 15(1) Red GE30337X012 0.15 3.8 6.8 173
5.5 to 8.5 13 to 21 Black GE30338X012 0.17 4.3 6.8 173
5.5 to 8.5 13 to 21 Brown [Use with
Low Inlet (LIN) Option] GE49043X012 0.16 4.1 8.3 211
8 to 12 20 to 30 Purple GE30339X012 0.17 4.3 7.4 188
10 to 16 25 to 40 White GE30340X012 0.18 4.6 7.4 188
14 to 30 35 to 75 Dark Green GE30341X012 0.20 5.2 7.5 191
CS820, CS823,
CS824, CS825
and CS826
1 to 2.5 psig 69 to 170 Dark Blue GE30342X012 0.25 6.4 7.5 191
1.5 to 3.5 psig 100 to 241 Orange GE46922X012 0.26 6.6 7.1 180
2.5 to 5.5 psig 170 to 380 Yellow GE30343X012 0.29 7.5 6.7 170
CS850 and CS854 5 to 10 psig 345 to 690 Green with White Stripe GE30344X012 0.39 9.9 7.6 192
1. In order to achieve the complete spring range listed, in some applications it may be required to re-orient the actuator/spring case to point downward to utilize the weight of the
internal components.
CONTROL
SPRING
SETPOINT SET RANGE
INTERNAL RELIEF AND
HIGH CAPACITY RELIEF TOKEN RELIEF
Start-to-Discharge Pressure
Range above Setpoint
Low Start-to-Discharge
Option(1) Start-to-Discharge Pressure
Range above Setpoint
Start-to-Discharge Pressure
Range above Setpoint
In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar
GE30337X012 4 10 3.5 to 6 9 to 15 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35
GE30338X012 7 17 5.5 to 8.5 13 to 21 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35
GE49043X012
(LIN) 7 17 5.5 to 8.5 13 to 21 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35
GE30339X012 11 27 8 to 12 20 to 30 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35
GE30340X012 14 35 10 to 16 25 to 40 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35
GE30341X012 1 psig 69 14 to 30 35 to 75 7 in. w.c. to
1 psig 17 to 69 - - - - - - - - 8 to 16 20 to 40
GE30342X012 2 psig 138 1 to
2.5 psig 70 to 170 7 in. w.c. to
2 psig 17 to 138 - - - - - - - - 7 in. w.c. to
1 psig 17 to 69
GE46922X012 3 psig 207 1.5 to
3.5 psig 100 to 240 7 in. w.c. to
2 psig 17 to 138 - - - - - - - - 0.5 to
1.5 psig 35 to 100
GE30343X012 5 psig 345 2.5 to
5.5 psig 170 to 380 7 in. w.c. to
2.5 psig 17 to 170 - - - - - - - - 1 to 2 psig 69 to 138
1. Low start-to-discharge option is only available on the main control spring ranges up to 10 to 16 in. w.c. / 25 to 40 mbar.
Bulletin 71.1:CS800
7
Table 6. Secondary Seat™ Outlet Pressures
CONTROL
SPRING SPRING RANGE SETPOINT
SECONDARY SEAT SHUTOFF PRESSURE(2)
(Types CS805 and CS825)
DOWNSTREAM BUILD-UP PRESSURE(1)(2)(3)
(Types CS806 and CS826)
Up to 1/2 in. / 13 mm
orice size
Up to 7/8 in. / 22 mm
orice size
Up to 1/2 in. / 13 mm
orice size
Up to 7/8 in. / 22 mm
orice size
Color In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar
Black 5.5 to 8.5 13 to 21 7 17 11 27 12 30 25 62 23 57
Brown (LIN) 5.5 to 8.5 13 to 21 7 17 11 27 12 30 25 62 23 57
White Stripe 10 to 16 25 to 40 14 35 19 47 20 50 36 89 33 81
Dark Green 14 to 30 35 to 75 1 psig 69 1.2 psig 83 1.3 psig 90 2.1 psig 145 2 psig 138
Dark Blue 1 to 2.5 psig 69 to
170 2 psig 140 2.6 psig 179 2.6 psig 179 3.8 psig 262 3.7 psig 255
Yellow 2.5 to
5.5 psig
170 to
380 5 psig 345 6.3 psig 434 6.3 psig 434 7.4 psig 510 8.2 psig 565
1. Downstream pressure buildup with Secondary Seat xed bleed in operation and regulator relief valve relieving to atmosphere.
2. Outlet pressure values listed are at maximum operating inlet pressure rating per orice.
3. If the outlet pressure rises above setpoint exceeding the pressure rating of the regulator, the internal parts must be inspected and replaced if damaged.
Table 7. Types CS803 and CS823 Regulator and Integral True-Monitor™ Outlet Pressure Ranges without Token Relief
PRIMARY REGULATOR INTEGRAL TRUE-MONITOR
Type Setpoint Spring Range Spring Color Setpoint Spring Range Spring
Color
In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar
CS803IN and
CS803EN
4 10 3.5 to 6 9 to 15 Red
14 35 12 to 21 30 to 52 Blue
21 52 18 to 30 45 to 75 Green
1 psig 69 26 to 40 65 to 99 Orange
7 17 5.5 to 8.5 13 to 21 Black
14 35 12 to 21 30 to 52 Blue
21 52 18 to 30 45 to 75 Green
1 psig 69 26 to 40 65 to 99 Orange
7 17 5.5 to 8.5 13 to 21 Brown (LIN)
14 35 12 to 21 30 to 52 Blue
21 52 18 to 30 45 to 75 Green
1 psig 69 26 to 40 65 to 99 Orange
11 27 8 to 12 20 to 30 Purple
21 52 18 to 30 45 to 75 Green
1 psig 69 26 to 40 65 to 99 Orange
1.5 psig 103 1.4 to 2.9 psig 97 to 200 Black
14 35 10 to 16 25 to 40 White
21 52 18 to 30 45 to 75 Green
1 psig 69 26 to 40 65 to 99 Orange
1.5 psig 103 1.4 to 2.9 psig 97 to 200 Black
1 psig 69 14 to 30 35 to 75 Dark Green
1.5 psig 103 1.4 to 2.9 psig 97 to 200 Black
2 psig 138 1.4 to 2.9 psig 97 to 200 Black
3.5 psig 241 2.6 to 3.7 psig 179 to 255 Purple
CS823IN and
CS823EN
2 psig 138 1 to 2.5 psig 69 to 170 Dark Blue
2.5 psig 172 1.4 to 2.9 psig 97 to 200 Black
3 psig 207 2.6 to 3.7 psig 179 to 255 Purple
5 psig 345 3.6 to 6 psig 248 to 414 Dark Blue
3 psig 207 1.5 to 3.5 psig 100 to 241 Orange
3.5 psig 241 2.6 to 3.7 psig 179 to 255 Purple
4 psig 276 3.6 to 6 psig 248 to 414 Dark Blue
6 psig 414 5.1 to 7.5 psig 352 to 517 Red
5 psig 345 2.5 to 5.5 psig 170 to 380 Yellow
6 psig 414 5.1 to 7.5 psig 352 to 517 Red
7 psig 483 5.1 to 7.5 psig 352 to 517 Red
7.5 psig 517 5.1 to 7.5 psig 352 to 517 Red
Bulletin 71.1:CS800
8
Table 9. CS800 Series Disk Color Selection
PRESSURE
REGISTRATION TYPE
BODY SIZE SPRING RANGE(1)
BODY
MATERIAL
END
CONNECTION
DISK
COLOR
DISK
ASSEMBLY
PART NUMBER
REPAIR KIT(2)
In. DN In. w.c. mbar
Internal
CS800
1-1/4
and
1-1/2
32
and
40
3.5 to 30 9 to 75 All Materials All Connections Black GE29773X022 RCS800XBLK2
2 50
3.5 to 6 9 to 15 All Materials All Connections Green GE29773X042 RCS800XGRN2
5.5 to 8.5
and 8 to 12
13 to 21 and
20 to 30
Gray Cast
Iron All Connections Blue GE29773X032 RCS800XBLU2
Ductile Iron or
WCC Steel
Flanged Blue GE29773X032 RCS800XBLU2
Threaded Dark Gray GE29773X082 RCS800XGRY2
10 to 16 and
14 to 30
25 to 40 and
35 to 75 All Materials All Connections Green GE29773X042 RCS800XGRN2
CS820
and
CS850
All Sizes 1 to 10 psig 69 to 690 All Materials All Connections Black GE29773X022 RCS800XBLK2
External All All Sizes All All Materials All Connections Black GE29773X022 RCS800XBLK2
1. The 3.5 to 30 in. w.c. / 9 to 75 mbar spring range indicates that all of the springs within this range are applicable.
2. Repair kit includes O-ring (key 19), disk assembly (key 36) and O-ring (key 62).
Table 8. Primary Regulator and Integral True-Monitor™ Outlet Pressure Ranges with Token Relief
PRIMARY REGULATOR INTEGRAL TRUE-MONITOR
Type Setpoint Spring Pressure Range Spring Color Setpoint Spring Pressure Range Spring Color
In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar
CS803IT,
CS803IL,
CS803ET
and
CS803EL
4 10 3.5 to 6 9 to 15 Red 21 52 18 to 30 45 to 75 Green
1 psig 69 26 to 40 65 to 99 Orange
7 17 5.5 to 8.5 13 to 21 Black 21 52 18 to 30 45 to 75 Green
1 psig 69 26 to 40 65 to 99 Orange
7 17 5.5 to 8.5 13 to 21 Brown (LIN) 21 52 18 to 30 45 to 75 Green
1 psig 69 26 to 40 65 to 99 Orange
11 27 8 to 12 20 to 30 Purple 1 psig 69 26 to 40 65 to 99 Orange
1.5 psig 103 1.4 to 2.9 psig 97 to 200 Black
14 35 10 to 16 25 to 40 White 1 psig 69 26 to 40 65 to 99 Orange
1.5 psig 103 1.4 to 2.9 psig 97 to 200 Black
1 psig 69 14 to 30 35 to 75 Dark Green 2 psig 138 1.4 to 2.9 psig 97 to 200 Black
3 psig 207 2.6 to 3.7 psig 179 to 255 Purple
CS823IT,
CS823IL,
CS823ET
and
CS823EL
2 psig 138 1 to 2.5 psig 69 to 170 Dark Blue 3 psig 207 2.6 to 3.7 psig 179 to 255 Purple
4 psig 276 3.6 to 6 psig 248 to 414 Dark Blue
3 psig 207 1.5 to 3.5 psig 100 to 241 Orange 5 psig 345 3.6 to 6 psig 248 to 414 Dark Blue
6 psig 414 5.1 to 7.5 psig 352 to 517 Red
5 psig 345 2.5 to 5.5 psig 170 to 380 Yellow 7 psig 483 5.1 to 7.5 psig 352 to 517 Red
7.5 psig 517 5.1 to 7.5 psig 352 to 517 Red
Bulletin 71.1:CS800
9
Table 10. CS803 and CS804 Series Disk Color Selection
PRESSURE
REGISTRATION TYPE
BODY SIZE SPRING RANGE(1)
BODY
MATERIAL
END
CONNECTION
DISK
COLOR
DISK
ASSEMBLY
PART NUMBER
REPAIR KIT(2)
In. DN In. w.c. mbar
Internal
CS803
and
CS804
1-1/2 40 3.5 to 30 9 to 75 All Materials All Connections Black GE29773X022 RCS800XBLK2
2 50
3.5 to 6 9 to 15 All Materials All Connections Green GE29773X042 RCS800XGRN2
5.5 to 8.5
and 8 to 12
13 to 21 and
20 to 30
Ductile Iron or
WCC Steel
Flanged Blue GE29773X032 RCS800XBLU2
Threaded Dark Gray GE29773X082 RCS800XGRY2
Gray Cast
Iron All Connections Blue GE29773X032 RCS800XBLU2
10 to 16 and
14 to 30
25 to 40 and
35 to 75 All Materials All Connections Green GE29773X042 RCS800XGRN2
CS823,
CS824
and
CS854
All Sizes 1 to 10 psig 69 to 690 All Materials All Connections Black GE29773X022 RCS800XBLK2
External All All Sizes All All Materials All Connections Black GE29773X022 RCS800XBLK2
1. The 3.5 to 30 in. w.c. / 9 to 75 mbar spring range indicates that all of the springs within this range are applicable.
2. Repair kit includes O-ring (key 19), disk assembly (key 36) and O-ring (key 62).
Table 11. CS805 and CS806 Series Disk Color Selection
PRESSURE
REGISTRATION TYPE
BODY SIZE SPRING RANGE(1)
BODY
MATERIAL
END
CONNECTION
DISK
COLOR
DISK
ASSEMBLY
PART NUMBER
REPAIR KIT(3)
In. DN In. w.c. mbar
Internal
CS805
and
CS806
1-1/4 32
3.5 to 30 9 to 75 Gray Cast
Iron All Connections
Yellow/
White Dot GE29773X062 RCS800XYEL2
1-1/2 40 Green/
White Dot GE29773X092 RCS800XGR22
2 50 White/
White Dot(2) GE29773X052 RCS800XWHT2
CS825
and
CS826
All Sizes 1 to 5.5 psig 69 to 380 Gray Cast
Iron All Connections Yellow/
White Dot GE29773X062 RCS800XYEL2
External All All Sizes All All Materials All Connections Black GE29773X022 RCS800XBLK2
1. The 3.5 to 30 in. w.c. / 9 to 75 mbar spring range indicates that all of the springs within this range are applicable.
2. White/White Dot disk requires the open end to be directed downstream with the direction of ow.
3. Repair kit includes O-ring (key 19), disk assembly (key 36) and O-ring (key 62).
Table 12. Regulator and Slam-Shut Overpressure Shutoff (OPSO) Pressure Ranges
REGULATOR SLAM-SHUT DEVICE
Over Pressure Shut-off (OPSO)
Type Factory Setpoint Spring Range Factory Setpoint(1) Spring Range(2) Spring Part Number
and Color
In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar
CS804
4 10 3.5 to 6 9 to 15 19 47 12 to 25 30 to 60 GF02168X012 / Brown
7 17 5.5 to 8.5 14 to 21 22 55
7 (optional) 17 (optional) 5.5 to 8.5 14 to 21 25 62 16 to 44 40 to 110 GF02169X012 / Red
11 27 8 to 12 20 to 30
14 35 10 to 16 25 to 40 30 75 24 to 78 60 to 190 GF02170X012 / Orange
14 (optional) 35 (optional) 10 to 16 25 to 40 2 psig 138 1.4 to
4.1 psig 97 to 283 GF02171X012 / Pink
1 psig 69 14 to 30 35 to 75 2 psig 138
CS824
2 psig 138 1 to 2.5 psig 69 to 170 3.5 psig 241
2 to 7.3 psig 138 to 503 GF02172X012 / Green
3 psig 207 1.5 to
3.5 psig 100 to 241 5 psig 345
5 psig 345 2.5 to
5.5 psig 170 to 380 7 psig 483 3.2 to
8.5 psig 221 to 586 GF02173X012 / Silver
CS854 7 psig 483 5 to 10 psig 345 to 690 9 psig 621 5.8 to
13 psig 400 to 896 GF04353X012 / Yellow
1. For units equipped with Token Relief, if Non-Factory Slam-shut OPSO setpoints are specied, they must be higher than the Token Relief Start-to-Discharge values provided in Table 5.
2. If Non-Factory OPSO setpoints are specied, the allowable OPSO setpoint cannot exceed the maximum of 3 psig / 207 mbar above the regulator setpoint in order to ensure no internal
parts damage from overpressure.
Bulletin 71.1:CS800
10
Principle of Operation and
Overpressure Protection
Types CS800, CS820 and CS850
Base Regulator Operation
Refer to Figures 3 and 4. When downstream demand
decreases, the pressure under the diaphragm
increases. This pressure overcomes the regulator
setting (which is set by the regulator control spring).
Through the action of the pusher post assembly, lever
and valve stem, the valve disk moves closer to the
orice and reduces gas ow. If demand downstream
increases, pressure under the diaphragm decreases.
Spring force pushes the pusher post assembly
downward, the valve disk moves away from the
orice and the gas ow increases downstream as the
regulator opens in response to the decreased pressure
underneath the diaphragm.
Relief Operation
Internal Relief “R”
Type numbers with the “R” sufx, e.g.,
Type CS800IR, provide internal relief discharge
through the diaphragm assembly (see Figure 3) to
minimize overpressure. Any outlet pressure above
the start- to- discharge point of the non-adjustable
relief spring (see Table 5) moves the diaphragm off
the relief seat, allowing excess pressure to discharge
through the vent. If conditions should exist that
prevent normal operation of the regulator or internal
relief valve, the relief valve stem acts as a secondary
travel stop contacting the underside of the closing
cap and stopping the upward travel of the relief seat.
Since the diaphragm continues to rise as downstream
pressure builds, the diaphragm lifts off of the relief
seat to provide relief operation. This secondary
travel stop for internal relief is not available on token
relieving units. Units with internal relief valve have
1 NPT vent size. See Figures 9, 11, 13, 15, 17 and 19
for relief capacity.
High-Capacity Internal Relief “Q”
Type numbers with the “Q” sufx, e.g., Type CS800IQ,
provide high capacity relief discharge across the
diaphragm assembly to minimize overpressure. Any
outlet pressure above the start-to-discharge point of
the non-adjustable relief spring (see Table 5) moves
the diaphragm off the relief seat, allowing excess
pressure to discharge through the vent. If emergency
conditions should exist that prevent normal operation
of the regulator or internal relief valve, the relief valve
stem acts as a secondary travel stop contacting the
underside of the closing cap and stopping the upward
Table 13. Regulator and Slam-Shut Underpressure Shutoff (UPSO) Pressure and Overpressure Shutoff (OPSO) Ranges
REGULATOR SLAM-SHUT DEVICE
Under Pressure Shut-off (UPSO) Over Pressure Shut-off (OPSO)
Type
Factory
Setpoint Spring Range Factory
Setpoint(1) Spring Range Spring Part
Number and
Color
Factory
Setpoint(2)
Spring Range
Over UPSO
Setpoint(3)
Spring Part
Number and
Color
In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar
CS804
7 17 5.5 to 8.5 14 to
21 3 7
2 to 12 5 to 30 T14168T0012 /
White
22 55
17 to 28 42 to 69 GF02168X012 /
Brown
11 27 8 to 12 20 to
30 6 15 25 62
14 35 10 to 16 25 to
40 9 22 30 75
1 psig 69 14 to 30 35 to
75 0.5 psig 35 0.36 to
2.3 psig
25 to
160
T14170T0012 /
Silver 2 psig 138 1.3 to
3.1 psig
90 to
214
GF02170X012 /
Orange
CS824
2 psig 138 1 to
2.5 psig
69 to
170 1 psig 69 0.36 to
2.3 psig
25 to
160
T14170T0012 /
Silver 3.5 psig 241 1.3 to
3.1 psig
90 to
214
GF02170X012 /
Orange
3 psig 207 1.5 to
3.5 psig
100 to
241 1.75 psig 121 1.5 to
7.3 psig
100 to
500
FA142869X12 /
Orange Stripe
5 psig 345 2.7 to
5.5 psig
186 to
379
GF02171X012 /
Pink
5 psig 345 2.5 to
5.5 psig
170 to
380 3 psig 207 7 psig 483
CS854 7 psig 483 5 to
10 psig
345 to
690 3.5 psig 241 1.5 to
7.3 psig
100 to
500
FA142869X12 /
Orange Stripe 9 psig 621 2.7 to
5.5 psig
186 to
379
GF02171X012 /
Pink
1. If Non-Factory UPSO setpoints are specied, a minimum differential of 4 in. w.c. / 10 mbar between UPSO setpoint and regulator setpoint must be maintained in order to ensure a
secure latch of the Slam-Shut.
2. For units equipped with Token Relief, if Non-Factory Slam-shut OPSO setpoints are specied, they must be higher than the Token Relief Start-to-Discharge values provided in Table 5.
3. If Non-Factory OPSO setpoints are specied, the allowable OPSO setpoint cannot exceed the maximum of 3 psig / 207 mbar above the regulator setpoint in order to ensure no internal
parts damage from overpressure.
Bulletin 71.1:CS800
11
Figure 3. Type CS800IR Internally Registered Regulator with Internal Relief Operational Schematic
M1070
Figure 4. Type CS800EN Externally Registered Regulator Operational Schematic
M1069
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LEVER
VALVE STEM
REGULATOR
DISK
REGULATOR
ORIFICE
ADJUSTING SCREW
CONTROL SPRING
RELIEF VALVE STEM
RELIEF VALVE SPRING
PUSHER POST
DIAPHRAGM ASSEMBLY
PUSHER POST
LEVER
VALVE STEM
REGULATOR
DISK
REGULATOR
ORIFICE
ADJUSTING SCREW
CONTROL SPRING
3/4 NPT CONTROL
LINE CONNECTION
DIAPHRAGM ASSEMBLY
Bulletin 71.1:CS800
12
Figure 5. Type CS803IT Internally Registered Primary Regulator with Internally Registered Integral Monitor Operational Schematic
M1074
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
Figure 6. Type CS804IT Internally Registered Regulator with Slam-Shut Module Operational Schematic
ADJUSTING
SCREW
EXTERNAL
CONTROL
LINE PLUG
CONTROL
SPRING
MONITOR
LEVER
GUIDED
STEM
OPENING
SPRING
MONITOR
DISK
DISK
CONTROL SPRING
PUSHER POST
ASSEMBLY
VALVE STEM
ORIFICE
INTEGRAL MONITOR PRIMARY REGULATOR
Type CS800EN Regulator
M1086
January 2008 Type CS800EN
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
M1075
VALVE STEM
DIAPHRAGM
RELIEF VALVE SPRING
PUSHER POST ASSEMBLY
ADJUSTING SCREW
CONTROL SPRING
LEVER
SEAT/ORIFICE
SLAM SHUT DEVICE
VALVE PLUG
UPSO SPRING
CONTROL LINE
PORT
DIAPHRAGM
OPSO SPRING
SENSE TUBE
Bulletin 71.1:CS800
13
Figure 7. CS805 Series with Secondary Seat™ Protection
M1072
M1072
4
CP200 Series with Secondary SeatTM Protection
CONTROL SPRING
RELIEF V LVE STEM
VALVE STEM
SECONDARY SEAT DETAIL
SECONDARY SEAT DETAILED VIEW
NORMAL OPERATION NORMAL LOCKUP DEBRIS OBSTRUCTING
LOCKUP
TYPE CS805 SECONDARY
SEAT LOCK-UP
TYPE CS806
SECONDARY SEAT WITH
CONTROLLED BLEED
METALLIC SECONDARY
ORIFICE SEATING
SURFACE
PRIMARY DISK
SECONDARY SEATING
SURFACE
PRIMARY ORIFICE
SEATING SURFACE
ELASTOMERIC SECONDARY
SEATING SURFACE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
PUSHER POST
LEVER
VALVE STEM
REGULATOR
DISK
REGULATOR
ORIFICE
ADJUSTING SCREW
CONTROL SPRING
SECONDARY SEAT
DETAIL
RELIEF VALVE STEM
RELIEF VALVE SPRING
DIAPHRAGM ASSEMBLY
Bulletin 71.1:CS800
14
travel of the relief seat. Since the diaphragm continues
to rise as downstream pressure builds, the diaphragm
lifts off of the relief seat to provide relief operation. The
secondary travel stop for internal relief is not available
on token relieving units. Units with high capacity
internal relief valve have 2-1/2 NPT vent size. See
Figures 10, 12, 14, 16, 18 and 20 for relief capacity.
Token Relief “T” and Low Flow Token
Relief “L”
Type numbers with the “T” or “L” sufx, e.g.,
Types CS800IT and CS800IL provide a low capacity/
token relief. Token relief provides relief from minor
overpressure caused by nicks or dents on the orice
or by thermal expansion of gas in the downstream line.
Token relief also provides a token or signal, in the form
of odor, that an overpressure situation is occurring.
Start-to-discharge values for Token reliefs are found
in Table 5. Maximum discharge capacities for Token
reliefs are found in Figure 8.
Types CS803 and CS823 Integral
True-Monitor™ Operation
Types CS803 and CS823 combine the operation of a
conventional two-regulator wide-open monitor set into
one body, see Figure 5. The Integral True-Monitor is
installed on the inlet side of the body and serves to
control downstream pressure in the situation where the
Primary regulator can no longer regulate downstream
pressure. During normal operation the True-Monitor is
in a wide-open state as its setpoint is set higher than
the primary regulator. See Tables 7 and 8 for guidance
regarding the setpoints of the regulator and associated
Integral Monitor sets. If the downstream pressure
should rise to the setpoint of the True-Monitor due to
loss of pressure control by the primary regulator, the
monitor will assume control and regulate ow to the
downstream system. Internal and external downstream
pressure registration are available. External pressure
registration requires a downstream sensing line. See
the Type TM600 Instruction Manual for additional
details of operation.
If a Token relief is present, the token relief will relieve
a small amount of gas to the atmosphere as an
indication that the Integral Monitor is controlling the
downstream pressure.
Types CS804, CS824 and CS854
Slam-Shut Operation
The Type VSX8 Slam-shut module on the
CS804 Series regulators is a fast acting shutoff
device that provides overpressure (OPSO) or
overpressure and underpressure (OPSO/UPSO)
protection by completely shutting off the ow of gas
to the downstream system. See Tables 12 and 13
for guidance regarding the typical setpoint of the
regulator and associated OPSO and UPSO sets.
The Type VSX8’s actions are independent of the
CS804 Series regulator and of variations to the inlet
pressure. The Type VSX8 provides the option of
internal or external downstream pressure registration.
External registration requires a downstream
sensing line.
The Type VSX8 shutoff disk is normally in the open
(reset) position, see Figure 6. If the downstream
pressure below the slam-shut diaphragm increases (or
decreases) until it reaches the slam-shut setpoint, this
diaphragm moves upward (or downward) to release
the trip mechanism which allows the spring force on
the stem to push the disk against the seat, shutting
off all gas ow. To reset the slam-shut after gas has
been shutoff, refer to Type VSX8 Instruction Manual
(D103127X012) for additional details.
Figure 8. Maximum Discharge Capacity for Token and Low Flow Token Relief
REGULATOR SETPOINT, psig / bar
Discharge Capacity in SCFH / Nm3/h at Maximum Operating Outlet
(3 psi / 0.21 bar setpoint) (Specific Gravity Gas = 0.6)
6 / 0.41
150 /
4.02
200 /
5.36
250 /
6.7
300 /
8.04
350 /
9.38
400 /
10.72
450 /
12.06
5.5 / 0.38
4.5 / 0.31
2.5 / 0.17
3.5 / 0.24
1.5 / 0.10
0.5 / 0.03
5 / 0.34
4 / 0.28
3 / 0.21
2 / 0.14
1 / 0.69
0
REGULATOR SETPOINT, psig / bar
Discharge Capacity in SCFH / Nm3/h at Maximum Operating Outlet
(3 psi / 0.21 bar setpoint) (Specific Gravity Gas = 0.6)
6 / 0.41
8 /
0.214
10 /
0.268
12 /
0.322
14 /
0.375
16 /
0.429
20 /
0.536
22 /
0.59
24 /
0.643
18 /
0.482
26 /
0.697
5.5 / 0.38
4.5 / 0.31
2.5 / 0.17
3.5 / 0.24
1.5 / 0.10
0.5 / 0.03
5 / 0.34
4 / 0.28
3 / 0.21
2 / 0.14
1 / 0.69
0
Maximum Discharge Capacity for Token Relief Maximum Discharge Capacity for Low Flow Token Relief
Bulletin 71.1:CS800
15
Note
In order for the Underpressure
Shutoff (UPSO) of any slam-shut to
be triggered, the downstream pipe
pressure must drop below the UPSO
setpoint. In the case of a downstream
line break, numerous factors can
prevent the downstream pipe pressure
from decreasing below the slam-shut
UPSO setpoint. These factors include
the distance of pipe to the break, the
diameter of the pipe, size of the break
and the number of restrictions, such as
valves, elbows and bends, downstream
of the regulator and/or slam-shut
device. Due to these factors additional
protections should be installed to stop
ow in the event of a line break.
Types CS805 and CS825 with
Secondary Seat™ Protection
Note
Types CS805 and CS825 regulators do not
have any means to alert when the Secondary
Seat operates at lockup. Therefore, it
is recommended that Internal relief or
high-capacity relief are also selected or
the addition of some other method of
overpressure protection be added in the
downstream system as discussed in the
Overpressure Protection section.
Refer to Figure 7. The Type CS805 provides
Secondary Seat Protection. As downstream demand
decreases and downstream pressure rises to the
regulator pressure lockup value, the regulator will
lockup. If, however, damage has occurred to the
primary disk, to the primary orice seating surface or
debris has become lodged between the primary disk
and primary orice, the outlet pressure will continue
to rise. This additional pressure causes the primary
disk to apply additional force to the orice seating
surface, which causes the Secondary seating surface
to move toward the Secondary disk or sealing surface.
If downstream demand decreases to zero, then the
secondary seating surface will contact the sealing
surface to provide lockup. See Table 6 for Secondary
Seat shutoff above setpoint.
Types CS806 and CS826 Secondary Seat
Protection with Bleed
The Types CS806 and CS826 provides small bleed
to the downstream system as an indication that the
Secondary Seat is providing lock-up. In the event that
the primary orice and disk cannot provide lockup,
the secondary seating surface will move into contact
with a metal disk. This metal to metal interface,
combined with a small drilled bleed hole, will allow
a small amount of gas to bleed downstream thereby
increasing outlet pressure until the internal relief valve
begins to discharge gas to the atmosphere. The odor
of this discharged gas provides an indication that
the regulator is relying on the Secondary Seat for
overpressure protection. See Table 6 for Secondary
Seat maximum downstream buildup.
Secondary Seat Protection Limitations
Note
Overpresssure conditions can occur in the
downstream piping when the Secondary
Seat Protection is installed. The Secondary
Seat Protection serves only as a backup to
the primary seat for lockup. Refer to
the sections on Overpressure Protection
and Maintenance.
Secondary Seat Protection does not provide additional
overpressure protection in the event the secondary seat
or disk is damaged by debris or contamination in the
pipeline or from conditions that would cause the regulator
to go wide-open.
Installation
The CS800 Series regulators may be installed in
any position. However, the spring case vent should
be pointed downward. If gas escaping through the
CS800 Series internal relief valve could constitute
a hazard, the spring case vent must be piped to a
location where escaping gas will not be hazardous.
If the vented gas will be piped to another location,
use obstruction-free tubing or piping at least equal
in size to the vent; protect the end of the vent pipe
from anything that might clog it. Regulators with
External Registration require the use of an external
control line.
Bulletin 71.1:CS800
16
Non-Relieving “N”
Type numbers with the “N” sufx, e.g., Type CS800IN,
do not provide internal relief discharge through the
diaphragm assembly.
The CS800 Series regulators have outlet pressure
ratings that are lower than their inlet pressure ratings.
A pressure relieving or pressure limiting device is
needed if the application inlet pressure can exceed
the outlet pressure rating and the regulator is not
equipped with internal relief, high capacity relief,
Integral True-Monitor™ Protection or Secondary
Seat™ Protection.
Note
Overpressuring any portion of a
regulator or associated equipment
may cause personal injury, leakage or
property damage due to bursting of
pressure-containing parts or explosion
of accumulated gas. Provide appropriate
pressure relieving or pressure limiting
devices to ensure that the limits in the
specications section are not exceeded.
Regulator operation within ratings does
not prevent the possibility of damage
from external sources or from debris in
the pipeline.
Downstream Control Line Connection
A CS800 Series regulator with an EN, ET or ER in
the type number has a blocked throat, an O-ring
stem seal and a 3/4 NPT control line tapping in the
lower diaphragm casing, see Figure 4. A regulator
with a downstream control line is used for monitoring
installations or other applications where there is
other equipment installed between the regulator and
the pressure control point. The O-ring stem seal
helps separate body pressure from diaphragm case
pressure on monitor installations where leakage
cannot be tolerated.
Capacity Information
Tables 14 through 66 provide natural gas regulating
capacities at selected inlet pressures, outlet pressure
settings and body outlet sizes. Flows are in SCfh
(60°F and 14.7 psia) and Nm3/h (0°C and 1.01325 bar)
of 0.6 specic gravity natural gas. To determine
equivalent capacities for air, propane, butane or
nitrogen, multiply the capacity number in the tables by
the following appropriate conversion factor: 0.775 for
air, 0.628 for propane, 0.548 for butane or 0.789 for
nitrogen. For gases of other specic gravities, multiply
the given capacity by 0.775 and divide by the square
root of the appropriate specic gravity.
Relief Sizing
For critical ow:
To determine wide-open ow capacities for relief
sizing of 0.6 specic gravity natural gas at 60°F at
critical pressure drops (absolute outlet pressure equal
to approximately one-half or less than one-half of the
absolute inlet pressure), use the following formula:
Q=P1abs(Cg)(1.29)
For subcritical ow:
If pressure drops are lower than critical (absolute
outlet pressure greater than approximately one-half
the absolute inlet pressure), use the following formula
and convert according to the factors in the preceding
paragraph if necessary:
Q = CgP1SIN
520
GT
3417
C1
∆P
P1
DEG
where:
C1 = Cg/Cv (see Table 3)
Cg = Gas sizing coefcient (see Table 3)
G = Gas specic gravity (air = 1.0)
P1 = Regulator inlet pressure, psia
∆P = Pressure drop across regulator, psig
Q = Gas ow rate, SCfh
T = Absolute temperature of gas at inlet, °Rankine
Note
Due to boost, the above formulas
cannot be used to obtain correct
regulating capacities for regulators with
internal registration.
The published capacities were obtained using inlet and
outlet piping the same size as the regulator body size.
Bulletin 71.1:CS800
17
Table 14. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 4 in. w.c. / 10 mbar Setpoint
for 1-1/2 in. / DN 40 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
4 in. w.c. -1 in. w.c. 2 in. w.c. 3.5 to 6 in. w.c. GE30337X012 / Red
10 mbar -2.5 mbar 5 mbar 9 to 15 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
0.4 0.03 300 8.1 300 8.1 300 8.1 1000 26.8 1400 37.6 1400 37.6 1600 43.0
0.51 0.04 300 8.1 500 13.4 850 22.8 1400 37.6 1590 42.7 1600 43.0 1710 45.9
1 0.07 400 10.7 800 21.5 1200 32.2 1540 41.3 2100 56.4 2300 61.7 2500 67.1 2700 72.5
2 0.14 600 16.1 1300 34.9 2000 53.7 2400 64.4 2800 75.2 3100 83.2 3470 93.2 3470 93.2
3 0.21 780 20.9 1600 43.0 2470 66.3 2860 76.8 3360 90.2 3620 97.2 4100 110 4190 113
5 0.34 1150 30.9 2170 58.3 2940 78.9 3800 102 4500 121 4580 123 5190 139 5190 139
10 0.69 1370 36.8 2900 77.9 4750 128 5200 140 5650 152 5650 152 5650 152 5930 159
15 1.0 1600 43.0 3600 96.6 6200 166 6500 175 6500 175 6500 175 6000 161 6710 180
20 1.4 2070 55.6 4300 115 6620 178 7250 195 7250 195 7400 199 7500 201
25 1.7 2550 68.5 5000 134 7050 189 7250 195 7250 195 7500 201 9000 242
30 2.1 2860 76.8 5010 135 7050 189 7250 195 7250 195 7500 201
40 2.8 3170 85.1 5020 135 7050 189 7250 195 7250 195 7500 201
50 3.4 4120 111 5070 136 7050 189 7250 195 7250 195 7500 201
60 4.1 4750 128 5100 137 7050 189 7250 195 7250 195
80 5.5 5700 153 6200 166 7170 193
100 6.9 6650 179 7300 196 7300 196
125 8.6 6950 187 8300 223
Black areas show where indicated droop/boost would be exceeded regardless of capacity.
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
Table 15. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 4 in. w.c. / 10 mbar Setpoint
for 2 in / DN 50 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
4 in. w.c. -1 in. w.c. 2 in. w.c. 3.5 to 6 in. w.c. GE30337X012 / Red
10 mbar -2.5 mbar 5 mbar 9 to 15 mbar
psig bar Body Size: 2 in. / DN 50
0.4 0.03 300 8.1 300 8.1 300 8.1 1170 31.4 1400 37.6 1600 43.0 1800 48.3
0.51 0.04 300 8.1 500 13.4 1000 26.8 1550 41.6 1900 51.0 2070 55.6 2400 64.4
1 0.07 400 10.7 900 24.2 1300 34.9 1760 47.2 1950 52.3 3000 80.5 2710 72.8 3800 102
2 0.14 600 16.1 1240 33.3 2070 55.6 2620 70.3 3930 106 5000 134 3450 92.6 5620 151
3 0.21 730 19.6 1530 41.1 2580 69.3 3540 95.0 4980 134 6200 166 6830 183 8010 215
5 0.34 1000 26.8 2090 56.1 3700 99.3 5500 148 7800 209 8600 231 9500 255 10,620 285
10 0.69 1320 35.4 3000 80.5 5100 137 7450 200 10,400 279 10,900 293 11,750 315 12,580 338
15 1.0 1650 44.3 3700 99.3 6500 175 9400 252 13,000 349 13,200 354 14,000 376 13,150 353
20 1.4 2020 54.2 4450 120 7850 211 10,150 273 13,000 349 13,200 354 16,000 430
25 1.7 2400 64.4 5200 140 9200 247 10,900 293 13,000 349 13,200 354 18,000 483
30 2.1 2720 73.0 5560 149 9460 254 10,980 295 13,400 360 13,560 364
40 2.8 3040 81.6 5920 159 9720 261 11,060 297 13,800 371 13,920 374
50 3.4 4000 107 7000 188 10,500 282 11,300 303 15,000 403 12,510 336
60 4.1 4450 120 9000 242 12,800 344 13,800 371 11,140 299
80 5.5 4970 133 9250 248 12,850 345
100 6.9 5500 148 9500 255 11,770 316
125 8.6 7250 195 9500 255
Black areas show where indicated droop/boost would be exceeded regardless of capacity.
Gray areas indicate limited capacities due to boost effects.
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
Bulletin 71.1:CS800
18
Table 16. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 7 in. w.c. / 17 mbar Setpoint
for 1-1/2 in. / DN 40 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
7 in. w.c. -1 in. w.c. 2 in. w.c. 5.5 to 8.5 in. w.c. GE30338X012 / Black
17 mbar -2.5 mbar 5 mbar 13 to 21 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
0.4 0.03 430 11.5 740 19.9 550 14.8 800 21.5 800 21.5 1060 28.5 1420 38.1
0.51 0.04 520 14.0 800 21.5 890 23.9 1100 29.5 1150 30.9 1300 34.9 1630 43.8
1 0.07 570 15.3 770 20.7 1140 30.6 1360 36.5 1510 40.5 1830 49.1 1960 52.6 2640 70.9
2 0.14 780 20.9 980 26.3 1570 42.1 1790 48.1 2220 59.6 2510 67.4 2790 74.9 3550 95.3
3 0.21 990 26.6 1230 33.0 1960 52.6 2380 63.9 2810 75.4 3310 88.9 3680 98.8 4380 118
5 0.34 1220 32.8 1920 51.5 2940 78.9 3390 91.0 4130 111 4130 111 4850 130 5510 148
10 0.69 1600 43.0 3160 84.8 4900 132 5130 138 5950 160 6270 168 6650 179 7200 193
15 1.0 1980 53.2 4150 111 6310 169 6040 162 7110 191 7240 194 7520 202 7650 205
20 1.4 2330 62.6 4910 132 7300 196 7130 191 7770 209 7770 209 8010 215
25 1.7 2620 70.3 5680 153 7550 203 7550 203 8220 221 8330 224 8330 224
30 2.1 2990 80.3 6370 171 8310 223 8140 219 8560 230 8560 230
40 2.8 3650 98.0 7830 210 8990 241 8690 233 8770 235 8770 235
50 3.4 4320 116 9010 242 9010 242 8880 238 9000 242 9210 247
60 4.1 5010 135 9040 243 9040 243 9040 243 9070 244
80 5.5 6290 169 9620 258 9620 258
100 6.9 7550 202 9510 255 9510 255
125 8.6 7820 210 9600 258
Black areas show where indicated droop/boost would be exceeded regardless of capacity.
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
Bulletin 71.1:CS800
19
Table 18. Types CS800(1), CS803(2) and CS804 Internal Registration Flow Capacities for 7 in. w.c. / 17 mbar Setpoint
for 2 in. / DN 50 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
7 in. w.c. -1 in. w.c. 2 in. w.c. 5.5 to 8.5 in. w.c. GE30338X012 / Black
17 mbar -2.5 mbar 5 mbar 13 to 21 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25(1)(2) 1-3/8 / 35(3)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
5 0.34 1120 30.1 1120 30.1 2600 69.8 3670 98.5 4630 124 8130 218 9590 257 5510 148
10 0.69 1480 39.7 2520 67.7 4840 130 9100 244 12,450 334 13,250 356 16,280 437 7200 193
15 1.0 1870 50.2 3130 84.0 7760 208 12,000 322 16,170 434 16,630 446 20,380 547 7650 205
20 1.4 2130 57.2 4230 114 9200 247 14,550 391 19,090 513 17,370 466 22,860 614
25 1.7 2500 67.1 5530 149 10,510 282 15,920 427 20,180 542 17,370 466 22,860 614
30 2.1 2850 76.5 6290 169 11,850 318 18,720 503 23,010 618 17,380 467
40 2.8 3590 96.4 7850 211 14,100 379 22,910 615 25,910 696 16,180 434
50 3.4 4200 113 9280 249 16,740 449 24,340 653 27,340 734 12,050 324
60 4.1 4910 132 10,810 290 19,390 521 24,360 654 19,730 530
80 5.5 6220 167 13,740 369 25,530 685
100 6.9 7440 200 16,630 446 25,530 685
125 8.6 8730 234 20,320 546
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Gray areas indicate limited capacities due to boost effects.
1. Type CS800 with Ductile Iron or Steel Bodies exhibit a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
2. Types CS803 and CS804 exhibit a 30% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.7.
3. Not available on the Type CS803.
Table 17. Types CS800(1)(3), CS803(2)(3) and CS804(3)(5) Internal Registration Flow Capacities for 7 in. w.c. / 17 mbar Setpoint
for 2 in. / DN 50 Body Size, Enhanced Low Inlet (LIN) Option
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
7 in. w.c. -1 in. w.c. 2 in. w.c. 5.5 to 8.5 in. w.c. GE49043X012 / Brown
17 mbar -2.5 mbar 5 mbar 13 to 21 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19(1) 7/8 / 22 1 / 25(2) 1-3/8 / 35(4)(5)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
0.4 0.03 460 12.3 750 20.1 910 24.4 1210 32.5 1470 39.5 1590 42.7 2390 64.2
0.51 0.04 600 16.1 820 22.0 1120 30.1 1580 42.4 1690 45.4 1720 46.2 2910 78.1
1 0.07 570 15.3 820 22.0 1330 35.7 1670 44.8 2190 58.8 2690 72.2 3330 89.4 4300 115
2 0.14 810 21.7 1080 29.0 2040 54.8 2750 73.8 3950 106 4610 124 4990 134 6250 168
3 0.21 1040 27.9 1450 38.9 2830 76.0 3730 100 5140 138 5920 159 6590 177 6970 187
5 0.34 1260 33.8 2050 55.0 3870 104 4990 134 7730 208 9080 244 11,020 296 10,380 279
10 0.69 1610 43.2 3070 82.4 6130 165 9360 251 12,330 331 14,570 391 16,360 439 13,210 355
15 1.0 1980 53.2 4050 109 7810 210 11,780 316 16,180 434 19,680 528 21,270 571 16,160 434
20 1.4 2160 58.0 4920 132 9210 247 13,860 372 18,920 508 22,030 591 22,030 591
25 1.7 2490 66.8 5720 154 10,520 282 16,160 434 22,030(3) 591(3) 22,030 591 22,030 591
Black areas show where indicated droop/boost would be exceeded regardless of capacity.
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Type CS800 with Ductile Iron or Steel body exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
2. Type CS800 with Ductile Iron or Steel Bodies and Type CS803 exhibit a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
3. Due to boost, the Type CS800 with Ductile Iron or Steel bodies, the Types CS803 and CS804 exhibit a 40% reduction in capacity for indicated condition. Multiply listed values by a
factor of 0.6.
4. Not available on the Type CS803.
5. Type CS804 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8 .
Bulletin 71.1:CS800
20
Figure 9. Type CS800IR Relief Curves (Blocked Open per Orice Size) at 7 in. w.c. / 17 mbar Set Pressure
Figure 10. Type CS800IQ High Capacity Relief Curves (Blocked Open per Orice Size) at 7 in. w.c. / 17 mbar Set Pressure
0
0
5 / 345
4.5 / 310
3.5 / 241
2.5 / 172
1.5 / 103
0.5 / 34
4 / 276
3 / 207
2 / 138
1 / 69
10 /
0.69
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
OUTLET PRESSURE, psig / mbar
1 NPT VENT SIZE (STANDARD RELIEF SPRING)
INLET PRESSURE, psig / bar
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE 3/4 in.
19 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
5 / 345
4.5 / 310
3.5 / 241
2.5 / 172
1.5 / 103
0.5 / 34
4 / 276
3 / 207
2 / 138
1 / 69
0
010 /
0.69
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
INLET PRESSURE, psig / bar
HIGH CAPACITY 2-1/2 NPT VENT SIZE (STANDARD RELIEF SPRING)
OUTLET PRESSURE, psig / mbar
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE 5/8 in. /
16 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
Bulletin 71.1:CS800
21
Figure 11. Type CS800IR Relief Curves (Blocked Open per Orice Size) at 7 in. w.c. / 17 mbar Set Pressure
Figure 12. Type CS800IQ High Capacity Relief Curves (Blocked Open per Orice Size) at 7 in. w.c. / 17 mbar Set Pressure
5 / 345
4.5 / 310
3.5 / 241
2.5 / 172
1.5 / 103
0.5 / 34
4 / 276
3 / 207
2 / 138
1 / 69
0
010 /
0.69
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
INLET PRESSURE, psig / bar
OUTLET PRESSURE, psig / mbar
1 NPT VENT SIZE
(OPTIONAL LOW START-TO-DISCHARGE RELIEF SPRING)
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/8 in. /
6.4 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE
5 / 345
4.5 / 310
3.5 / 241
2.5 / 172
1.5 / 103
0.5 / 34
4 / 276
3 / 207
2 / 138
1 / 69
0
OUTLET PRESSURE, psig / mbar
INLET PRESSURE, psig / bar
HIGH CAPACITY 2-1/2 NPT VENT SIZE
(OPTIONAL LOW START-TO-DISCHARGE RELIEF SPRING)
010 /
0.69
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE 3/4 in. /
19 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
Bulletin 71.1:CS800
22
Table 19. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 14 in. w.c. / 35 mbar Setpoint
for 1-1/2 in. / DN 40 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
14 in. w.c. -2 in. w.c. 2 in. w.c. 10 to 16 in. w.c. GE30340X012 / White
35 mbar -5 mbar 5 mbar 25 to 40 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
1 0.07 450 12.1 670 18.0 1000 26.8 1100 29.5 1250 33.6 1400 37.6 1500 40.3 1950 52.3
2 0.14 550 14.8 1070 28.7 1400 37.6 1600 43.0 1750 47.0 2000 53.7 2300 61.7 2500 67.1
3 0.21 700 18.8 1160 31.1 1610 43.2 1900 51.0 2160 58.0 2500 67.1 2960 79.5 3250 87.2
5 0.34 1000 26.8 1200 32.2 2050 55.0 2500 67.1 3000 80.5 3600 96.6 4300 115 4750 128
10 0.69 1370 36.8 2120 56.9 3150 84.6 3800 102 4550 122 5100 137 5800 156 6300 169
15 1.0 1750 47.0 3050 81.9 4250 114 5100 137 6100 164 6700 180 7300 196 7850 211
20 1.4 2120 56.9 3900 105 4950 133 6000 161 7250 195 7600 204 8000 215
25 1.7 2500 67.1 4750 128 5650 152 7000 188 8700 234 8700 234 8600 231
30 2.1 2820 75.7 5420 146 6260 168 7500 201 8960 241 8960 241
40 2.8 3140 84.3 6090 164 6870 184 7900 212 9220 248 9220 248
50 3.4 4100 110 8100 217 8720 234 9300 250 9870 265 9870 265
60 4.1 4750 128 9450 254 9730 261 9730 261 10,240 275
80 5.5 6100 164 9920 266 10,270 276
100 6.9 7450 200 10,400 279 10,430 280
125 8.6 9050 243 10,400 279
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
Table 20. Types CS800, CS803 and CS804 Series Internal Registration Flow Capacities for 14 in. w.c. / 35 mbar Setpoint
for 2 in. / DN 50 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
14 in. w.c. -2 in. w.c. 2 in. w.c. 10 to 16 in. w.c. GE30340X012 / White
35 mbar -5 mbar 5 mbar 25 to 40 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
1 0.07 450 12.1 630 16.9 770 20.7 1300 34.9 1500 40.3 1600 43.0 1700 45.6 2700 72.5
2 0.14 600 16.1 1000 26.8 1800 48.3 2240 60.1 2800 75.2 3260 87.5 3800 102 3800 102
3 0.21 750 20.1 1210 32.5 2200 59.1 2700 72.5 3200 85.9 3700 99.3 4300 115 6060 163
5 0.34 1050 28.2 1750 47.0 2800 75.2 3300 88.6 4000 107 4600 124 5300 142 10,200 274
10 0.69 1400 37.6 2720 73.0 4250 114 6500 175 9200 247 10,300 277 11,650 313 14,550 391
15 1.0 1750 47.0 3700 99.3 5700 153 9600 258 14,400 387 16,100 432 17,910 481 17,110 459
20 1.4 2170 58.3 4700 126 7950 213 11,700 314 16,200 435 18,800 505 20,290 545
25 1.7 2560 68.7 5700 153 10,200 274 12,400 333 18,000 483 21,400 575 22,000 591
30 2.1 2910 78.1 6440 173 10,310 277 12,400 333 18,220 489 21,400 575
40 2.8 3540 95.0 7770 209 10,540 283 13,020 350 18,680 502 21,400 575
50 3.4 4170 112 9190 247 10,770 289 14,500 389 19,140 514 21,400 575
60 4.1 4800 129 10,900 293 11,000 295 14,900 400 19,600 526
80 5.5 6100 164 12,550 337 12,550 337
100 6.9 7400 199 14,100 379 14,100 379
125 8.6 9100 244 16,120 433
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
Bulletin 71.1:CS800
23
Figure 13. Type CS800IR Relief Curves (Blocked Open per Orice Size) at 14 in. w.c. / 35 mbar Set Pressure
Figure 14. Type CS800IQ High Capacity Relief Curves (Blocked Open per Orice Size) at 14 in. w.c. / 35 mbar Set Pressure
INLET PRESSURE, psig / bar
OUTLET PRESSURE, psig / mbar
1 NPT VENT SIZE
5 / 345
4.5 / 310
3.5 / 241
2.5 / 172
1.5 / 103
0.5 / 34
4 / 276
3 / 207
2 / 138
1 / 69
0
010 /
0.69
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
INLET PRESSURE, psig / bar
OUTLET PRESSURE, psig / mbar
5 / 345
4.5 / 310
3.5 / 241
2.5 / 172
1.5 / 103
0.5 / 34
4 / 276
3 / 207
2 / 138
1 / 69
0
010 /
0.69
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
HIGH CAPACITY 2-1/2 NPT VENT SIZE
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
Bulletin 71.1:CS800
24
Table 21. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 1% ABS Accuracy
SETPOINT ACCURACY: + / - 1% ABS SPRING
Droop Boost Set Range Part Number / Color
1 psig -4.3 in. w.c. 4.3 in. w.c. 14 to 30 in. w.c. GE30341X012 /
Dark Green
0.07 bar -11 mbar 11 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)(2)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
2 0.14 650 17.4 1050 28.2 1350 36.2 1800 48.3 2450 65.8 2600 69.8 2700 72.5 3000 80.5
3 0.21 780 20.9 1400 37.6 1800 48.3 2260 60.7 2900 77.9 3130 84.0 3360 90.2 3730 100
5 0.34 1050 28.2 2100 56.4 2700 72.5 3200 85.9 3800 102 4200 113 4700 126 5200 140
10 0.69 1500 40.3 2800 75.2 3700 99.3 4600 124 5600 150 6300 169 7000 188 7300 196
15 1.0 1950 52.3 3750 101 4900 132 5800 156 6900 185 7600 204 8500 228 8750 235
20 1.4 2200 59.1 4600 124 5800 156 6900 185 8150 219 9200 247 10,350 278
25 1.7 2500 67.1 5000 134 7250 195 8100 217 9050 243 9500 255 10,850 291
30 2.1 2800 75.2 6000 161 8200 220 8700 234 9400 252 9500 255 11,000 295
40 2.8 3550 95.3 7350 197 9100 244 9300 250 9500 255 9500 255
50 3.4 4050 109 8450 227 10,300 276 10,300 277 10,300 277 10,300 277
60 4.1 4800 129 9050 243 10,450 281 10,500 282 10,550 283 10,550 283
80 5.5 5900 158 11,000 295 11,000 295 11,000 295 11,000 295
100 6.9 7400 199 11,150 299 11,150 299
125 8.6 9000 242 11,750 315
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
2. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
Table 22. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 2 in. / DN 50 Body Size at 1% ABS Accuracy
SETPOINT ACCURACY: + / - 1% ABS SPRING
Droop Boost Set Range Part Number / Color
1 psig -4.3 in. w.c. 4.3 in. w.c. 14 to 30 in. w.c. GE30341X012 /
Dark Green
0.07 bar -11 mbar 11 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
2 0.14 570 39.3 970 66.9 1910 132 1910 132 2750 190 2900 200 3100 214 3300 228
3 0.21 730 50.3 1460 101 2250 155 2660 183 3200 221 3630 250 4150 286 5200 359
5 0.34 1050 72.4 2200 152 2750 190 3400 234 4100 283 5100 352 6250 431 9000 621
10 0.69 1500 103 2500 172 4050 279 6100 421 8500 586 10,700 738 13,250 914 13,700 945
15 1.0 1900 131 3450 238 5800 400 9000 621 13,000 896 14,400 993 16,000 1103 16,300 1124
20 1.4 2240 154 4800 331 7700 531 10,200 703 13,300 917 15,700 1083 18,500 1276
25 1.7 2500 172 5600 386 10,400 717 13,100 903 16,500 1138 17,700 1220 19,000 1310
30 2.1 2900 200 6350 438 11,950 823 15,000 1034 18,800 1296 19,000 1310 19,300 1331
40 2.8 3650 252 7850 541 14,550 1003 16,700 1151 19,300 1331 19,500 1344
50 3.4 4250 293 9300 641 16,700 1151 18,400 1269 20,500 1413 20,700 1427
60 4.1 4900 338 10,950 755 19,400 1338 20,000 1379 20,800 1434 21,000 1448
80 5.5 6200 428 13,790 951 20,400 1407 20,600 1420 20,800 1434
100 6.9 7400 510 16,510 1138 21,100 1455
125 8.6 9350 645 20,200 1393
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
Bulletin 71.1:CS800
25
Table 23. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 2% ABS Accuracy
SETPOINT ACCURACY: + / - 2% ABS SPRING
Droop Boost Set Range Part Number / Color
1 psig -8.7 in. w.c. 8.7 in. w.c. 14 to 30 in. w.c. GE30341X012 /
Dark Green
0.07 bar -22 mbar 22 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)(2)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
2 0.14 740 19.9 1450 38.9 2100 56.4 2800 75.2 3700 99.3 4100 110 4650 125 5350 144
3 0.21 910 24.4 1800 48.3 2580 69.3 3400 91.3 4480 120 5100 137 5730 154 6200 166
5 0.34 1180 31.7 2320 62.3 3550 95.3 4700 126 6050 162 6900 185 7900 212 7900 212
10 0.69 1630 43.8 3380 90.7 5100 137 6700 180 8550 230 9000 242 9550 256 10,100 271
15 1.0 1960 52.6 4170 112 6700 180 7900 212 9400 252 10,300 277 11,250 302 11,400 306
20 1.4 2250 60.4 4740 127 8100 217 9200 247 10,500 282 11,300 303 12,200 328
25 1.7 2660 71.4 5710 153 10,100 271 10,800 290 11,550 310 12,000 322 12,600 338
30 2.1 2960 79.5 6440 173 10,550 283 11,400 306 12,350 332 12,700 341 13,100 352
40 2.8 3650 98.0 7850 211 10,550 283 11,400 306 12,350 332 12,350 332
50 3.4 4350 117 9250 248 12,000 322 12,500 336 13,000 349 13,000 349
60 4.1 5000 134 10,900 293 12,600 338 12,800 344 13,000 349 13,000 349
80 5.5 6340 170 12,550 337 13,000 349 13,000 349 13,000 349
100 6.9 7740 208 12,900 346 13,450 361
125 8.6 9380 252 13,450 361
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
2. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
Table 24. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 2 in. / DN 50 Body Size at 2% ABS Accuracy
SETPOINT ACCURACY: + / - 2% ABS SPRING
Droop Boost Set Range Part Number / Color
1 psig -8.7 in. w.c. 8.7 in. w.c. 14 to 30 in. w.c. GE30341X012 /
Dark Green
0.07 bar -22 mbar 22 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
2 0.14 700 18.8 1110 29.8 2340 62.8 3100 83.2 4100 110 4800 129 5470 147 7900 212
3 0.21 850 22.8 1710 45.9 2960 79.5 4060 109 5180 139 6430 173 7630 205 10,030 269
5 0.34 1150 30.9 2250 60.4 4000 107 5800 156 7920 213 9700 260 11,620 312 14,300 384
10 0.69 1610 43.2 3510 94.2 6200 166 8900 239 12,250 329 14,750 396 18,280 491 19,480 523
15 1.0 1910 51.3 4250 114 7850 211 11,500 309 15,010 403 18,700 502 21,390 574 22,760 611
20 1.4 2240 60.1 4980 134 9100 244 13,600 365 18,990 510 22,300 599 24,110 647
25 1.7 2610 70.1 5770 155 10,300 277 15,500 416 21,800 585 26,200 703 26,620 715
30 2.1 2910 78.1 6540 176 11,800 317 18,300 491 24,710 663 27,670 743 27,670 743
40 2.8 3630 97.4 8000 215 14,300 384 21,600 580 29,870 802 30,500 819
50 3.4 4330 116 9300 250 16,700 448 24,400 655 31,950 858 31,950 858
60 4.1 4950 133 10,850 291 19,500 524 26,100 701 32,010 859 32,410 870
80 5.5 6310 169 13,600 365 24,600 660 28,900 776 32,010 859
100 6.9 7640 205 16,810 451 30,200 811
125 8.6 9370 252 20,480 550
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
Bulletin 71.1:CS800
26
Table 25. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
1 psig -2.8 in. w.c. 2.8 in. w.c. 14 to 30 in. w.c. GE30341X012 /
Dark Green
0.07 bar -7 mbar 7 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)(2)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
2 0.14 530 14.2 710 19.1 940 25.2 1220 32.8 1430 38.4 1430 38.4 1330 35.7 1930 51.8
3 0.21 620 16.6 1070 28.7 1150 30.9 1490 40.0 1770 47.5 1700 45.6 1700 45.6 2530 67.9
5 0.34 810 21.7 1560 41.9 1650 44.3 2050 55.0 2530 67.9 2450 65.8 2450 65.8 3750 101
10 0.69 1360 36.5 2080 55.8 3100 83.2 3840 103 4680 126 4840 130 4950 133 5330 143
15 1.0 1650 44.3 2920 78.4 3860 104 4670 125 5570 150 6290 169 7000 188 7500 201
20 1.4 1960 52.6 3650 98.0 4560 122 5040 135 5570 150 6680 179 8120 218
25 1.7 2400 64.4 4400 118 5550 149 6700 180 7900 212 7900 212 8650 232
30 2.1 2570 69.0 5270 142 5650 152 7080 190 8220 221 9300 250 9990 268
40 2.8 3360 90.2 3960 106 7300 196 7790 209 8470 227 8510 229
50 3.4 3960 106 7920 213 7970 214 8590 231 8920 240 8920 240
60 4.1 4660 125 7820 210 8020 215 8520 229 9020 242 9020 242
80 5.5 5860 157 8740 235 9020 242 9020 242 9020 242
100 6.9 7350 197 8960 241 10,150 273
125 8.6 9050 243 10,020 269
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
2. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
Table 26. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 2 in. / DN 50 Body Size at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
1 psig -2.8 in. w.c. 2.8 in. w.c. 14 to 30 in. w.c. GE30341X012 /
Dark Green
0.07 bar -7 mbar 7 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
2 0.14 500 13.4 860 23.1 1420 38.1 1450 38.9 1450 38.9 1450 38.9 1450 38.9 1450 38.9
3 0.21 610 16.4 1030 27.7 1420 38.1 1660 44.6 2000 53.7 2300 61.7 2700 72.5 3260 87.5
5 0.34 850 22.8 1640 44.0 1800 48.3 2130 57.2 2570 69.0 3320 89.1 4190 113 5140 138
10 0.69 1350 36.2 1750 47.0 2380 63.9 4000 107 5920 159 6540 176 7110 191 8470 227
15 1.0 1610 43.2 2690 72.2 3540 95.0 5290 142 7470 201 7680 206 8050 216 9580 257
20 1.4 2000 53.7 3760 101 5350 144 7430 200 9760 262 9760 262 9800 263
25 1.7 2400 64.4 4340 117 7000 188 9770 262 13,100 352 13,410 360 13,890 373
30 2.1 2470 66.3 5120 137 7500 201 11,420 307 16,250 436 17,320 465 18,520 497
40 2.8 3490 93.7 7300 196 13,100 352 15,510 416 18,410 494 20,910 561
50 3.4 3900 105 8020 215 16,110 433 17,090 459 18,410 494 22,290 598
60 4.1 4600 124 10,700 287 18,800 505 19,700 529 20,700 556 22,410 602
80 5.5 5700 153 13,000 349 18,800 505 19,700 529 20,700 556
100 6.9 7190 193 15,720 422 19,070 512
125 8.6 9190 247 19,600 526
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
Bulletin 71.1:CS800
27
Table 27. Types CS800, CS803(1) and CS804(2) Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
1 psig -5.5 in. w.c. 5.5 in. w.c. 14 to 30 in. w.c. GE30341X012 /
Dark Green
0.07 bar -14 mbar 14 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)(2)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
2 0.14 500 13.4 750 20.1 1750 47.0 2000 53.7 2250 60.4 2300 61.7 2400 64.4 2850 76.5
3 0.21 700 18.8 1100 29.5 1930 51.8 2200 59.1 2630 70.6 2900 77.9 3210 86.2 3680 98.8
5 0.34 1100 29.5 1800 48.3 2300 61.7 2800 75.2 3400 91.3 4100 110 4850 130 5350 144
10 0.69 1600 43.0 3200 85.9 4600 124 5800 156 7250 195 8000 215 8800 236 8800 236
15 1.0 1900 51.0 3970 107 5400 145 6600 177 8030 216 8700 234 9410 253 10,020 269
20 1.4 2200 59.1 4750 128 6200 166 7400 199 8820 237 9400 252 10,020 269
25 1.7 2500 67.1 5520 148 7000 188 8200 220 9610 258 10,100 271 10,630 285
30 2.1 2800 75.2 6300 169 7800 209 9000 242 10,400 279 10,800 290 11,250 302
40 2.8 3500 94.0 7400 199 8410 226 9400 252 10,600 285 10,600 285
50 3.4 4200 113 8500 228 9030 242 9800 263 10,800 290 10,800 290
60 4.1 4900 132 9600 258 9650 259 10,300 277 11,000 295 11,000 295
80 5.5 6100 164 10,070 270 10,800 290 10,900 293 11,000 295
100 6.9 7300 196 10,550 283 11,950 321
125 8.6 9100 244 10,550 283
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
2. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
Table 28. Types CS800, CS803 and CS804 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 2 in. / DN 50 Body Size at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
1 psig -5.5 in. w.c. 5.5 in. w.c. 14 to 30 in. w.c. GE30341X012 /
Dark Green
0.07 bar -14 mbar 14 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
2 0.14 650 17.4 1040 27.9 2200 59.1 2570 69.0 3200 85.9 3400 91.3 3600 96.6 4500 121
3 0.21 800 21.5 1560 41.9 2530 67.9 3100 83.2 3730 100 4300 115 4960 133 6330 170
5 0.34 1100 29.5 2300 61.7 3200 85.9 3900 105 4800 129 6100 164 7700 207 10,000 269
10 0.69 1600 43.0 3000 80.5 4300 115 7500 201 11,400 306 13,200 354 15,200 408 16,300 438
15 1.0 1900 51.0 4000 107 6900 185 10,800 290 14,560 391 18,000 483 19,930 535 20,170 542
20 1.4 2300 61.7 4900 132 9100 244 13,600 365 18,520 497 21,300 572 22,680 609
25 1.7 2600 69.8 5600 150 10,500 282 15,500 416 21,700 583 24,300 652 24,410 655
30 2.1 2900 77.9 6500 175 11,800 317 17,900 481 24,020 645 25,320 680 25,580 687
40 2.8 3700 99.3 8000 215 14,500 389 20,100 540 27,000 725 27,810 747
50 3.4 4300 115 9300 250 16,600 446 21,700 583 27,810 747 27,810 747
60 4.1 4900 132 10,940 294 19,500 524 24,900 669 29,050 780 29,050 780
80 5.5 6300 169 13,830 371 24,000 644 27,400 736 29,070 780
100 6.9 7700 207 16,680 448 29,500 792
125 8.6 9600 258 20,200 542
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
Bulletin 71.1:CS800
28
Figure 15. Type CS800IR Relief Curves (Blocked Open per Orice Size) at 1 psig / 0.07 bar Set Pressure
Figure 16. Type CS800IQ High Capacity Relief Curves (Blocked Open per Orice Size) at 1 psig / 0.07 bar Set Pressure
INLET PRESSURE, psig / bar
1 NPT VENT SIZE
OUTLET PRESSURE, psig / mbar
0
0
10 /
0.69
6 /
414
5 /
345
4 /
276
3 /
207
2 /
138
1 /
69
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
INLET PRESSURE, psig / bar
HIGH CAPACITY 2-1/2 NPT VENT SIZE
OUTLET PRESSURE, psig / mbar
0
0
10 /
0.69
6 /
414
5 /
345
4 /
276
3 /
207
2 /
138
1 /
69
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
Bulletin 71.1:CS800
29
Table 29. Types CS820, CS823 and CS824 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 1% ABS Accuracy
SETPOINT ACCURACY: + / - 1% ABS SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.17 psig 0.17 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -12 mbar 12 mbar 0.07 to 0.17 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
3 0.21 710 19.1 1000 26.8 1000 26.8 1380 37.0 1600 43.0 1780 47.8 1800 48.3 2510 67.4
5 0.34 900 24.2 1160 31.1 1740 46.7 2080 55.8 2440 65.5 2920 78.4 3300 88.6 4150 111
10 0.69 1410 37.9 1980 53.2 2930 78.7 3780 102 4280 115 4760 128 5250 141 6430 173
15 1.0 1920 51.5 2690 72.2 4040 109 5060 136 5580 150 5760 155 6920 186 7720 207
20 1.4 2310 62.0 3370 90.5 5180 139 6350 171 6870 184 7500 201 7870 211
25 1.7 2570 69.0 4050 109 6050 162 7280 195 7580 204 7890 212 8440 227
30 2.1 2930 78.7 4720 127 6960 187 7800 209 8570 230 8230 221 9050 243
40 2.8 3510 94.2 6280 169 8370 225 9400 252 9450 254 9290 250
50 3.4 4330 116 7550 203 9320 250 9440 253 10,220 274 10,040 270
60 4.1 4940 133 8960 241 10,010 269 10,420 280 10,420 280 10,140 272
80 5.5 6360 171 10,320 277 10,890 292 11,180 300 11,180 300
100 6.9 7560 203 11,090 298 11,290 303
125 8.6 9300 250 11,290 303
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
3 0.21 650 17.4 810 21.7 1080 29.0 1610 43.2 1690 45.4 1860 49.9 2690 72.2 3060 82.1
5 0.34 1040 27.9 1290 34.6 1850 49.7 2540 68.2 2900 77.9 3960 106 4270 115 5340 143
10 0.69 1480 39.7 2240 60.1 3410 91.5 4850 130 5780 155 7560 203 9230 248 10,800 290
15 1.0 1870 50.2 3260 87.5 5410 145 7700 207 8490 228 11,750 315 12,530 336 14,550 391
20 1.4 2280 61.2 4070 109 7360 198 10,180 273 11,900 320 13,250 356 14,760 396
25 1.7 2600 69.8 4980 134 9100 244 12,640 339 15,050 404 16,190 435 17,120 460
30 2.1 2920 78.4 5780 155 10,640 286 14,500 389 16,950 455 17,370 466 18,170 488
40 2.8 3510 94.2 7640 205 14,010 376 17,930 481 20,100 537 20,230 542
50 3.4 4240 113 8790 236 16,930 455 21,160 568 22,560 606 20,230 542
60 4.1 4980 134 10,650 286 19,640 527 23,460 630 23,600 634 20,230 542
80 5.5 6300 169 13,600 365 24,830 667 24,830 667 24,830 667
100 6.9 7620 205 16,280 437 28,790 773
125 8.6 9370 252 19,900 534
1. Type CS823 exhibits a 15% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.85.
2. Not available on the Type CS823.
3. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8 .
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5(1) 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25(1) 1-3/8 / 35(2)(3)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
Table 30. Types CS820, CS823(1)(2) and CS824(3) Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint
for 2 in. / DN 50 Body Size at 1% ABS Accuracy
SETPOINT ACCURACY: + / - 1% ABS SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.17 psig 0.17 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -12 mbar 12 mbar 0.07 to 0.17 bar
Bulletin 71.1:CS800
30
Table 31. Types CS820, CS823 and CS824 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 2% ABS Accuracy
SETPOINT ACCURACY: + / - 2% ABS SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.33 psig 0.33 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -23 mbar 23 mbar 0.07 to 0.17 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
3 0.21 800 21.5 1350 36.2 1810 48.6 2370 63.6 2680 71.9 3460 92.9 3490 93.7 4140 111
5 0.34 1010 27.1 1790 48.1 2810 75.4 3740 100 4210 113 5000 134 5640 151 7310 196
10 0.69 1550 41.6 2930 78.7 4800 129 6160 165 6880 185 7440 200 8520 229 9690 260
15 1.0 1980 53.2 3870 104 6450 173 8040 216 8610 231 9020 242 10,210 274 10,800 290
20 1.4 2310 62.0 4740 127 7810 210 9480 255 10,030 269 10,510 282 11,350 305
25 1.7 2670 71.7 5560 149 8890 239 10,270 276 11,080 297 11,160 300 12,220 328
30 2.1 2980 80.0 6300 169 9830 264 11,500 309 11,900 320 11,560 310 12,590 338
40 2.8 3630 97.4 7850 211 11,290 303 12,590 338 12,870 346 12,630 339
50 3.4 4360 117 9160 246 12,610 339 13,100 352 13,340 358 13,340 358
60 4.1 4990 134 10,860 292 13,500 362 13,530 363 13,530 363 13,530 363
80 5.5 6380 171 13,420 360 14,230 382 14,230 382 14,230 382
100 6.9 7660 206 14,690 394 15,150 407
125 8.6 9390 252 14,690 394
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
3 0.21 720 19.3 1150 30.9 1980 53.2 2470 66.3 3230(2) 86.7(2) 3540 95.0 4200 113 5640 151
5 0.34 1140 30.6 1850 49.7 3140 84.3 4120 111 5150(2) 138(2) 6120 164 7050 189 9210 247
10 0.69 1600 43.0 3100 83.2 5380 144 7250 195 8730 234 11,300 303 12,550 337 16,570 445
15 1.0 1980 53.2 4150 111 7440 200 10,230 275 12,410 333 15,290 411 16,900 454 19,470 523
20 1.4 2330 62.6 4930 132 9100 244 12,570 337 15,870 426 18,530 497 19,190 515
25 1.7 2650 71.1 5670 152 10,450 281 14,690 394 18,720 503 21,120 567 22,120 594
30 2.1 2940 78.9 6170 166 11,770 316 16,960 455 20,850 560 23,130 621 23,740 637
40 2.8 3580 96.1 7920 213 14,780 397 20,790 558 24,670 662 26,630 715
50 3.4 4280 115 9090 244 17,550 471 24,300 652 26,400 709 28,150 756
60 4.1 4980 134 10,860 292 20,470 550 28,340 761 28,340 761 29,780 800
80 5.5 6310 169 13,700 368 25,840 694 30,680 824 30,680 824
100 6.9 7650 205 16,580 445 30,980 832
125 8.6 9360 251 20,190 542
1. Type CS823 exhibits a 10% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.9.
2. Due to droop, the Type CS823 exhibits a 15% reduction in capacity for indicated conditions. Multiply listed values by a factor of 0.85.
3. Not available on the Type CS823.
4. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8 .
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25(1) 1-3/8 / 35(3)(4)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
Table 32. Types CS820, CS823(1)(2) and CS824(4) Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint
for 2 in. / DN 50 Body Size at 2% ABS Accuracy
SETPOINT ACCURACY: + / - 2% ABS SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.33 psig 0.33 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -23 mbar 23 mbar 0.07 to 0.17 bar
Bulletin 71.1:CS800
31
Table 33. Types CS820, CS823 and CS824 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.20 psig 0.20 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -14 mbar 14 mbar 0.07 to 0.17 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
3 0.21 740 19.9 1170 31.4 1170 31.4 1560 41.9 1730 46.4 2240 60.1 2240 60.1 3080 82.7
5 0.34 960 25.8 1410 37.9 1980 53.2 2510 67.4 2850 76.5 3640 97.7 3980 107 4830 130
10 0.69 1450 38.9 2260 60.7 3360 90.2 4320 116 5040 135 5510 148 6030 162 7410 199
15 1.0 1940 52.1 3080 82.7 4640 125 5830 157 6480 174 6980 187 7740 208 8440 227
20 1.4 2310 62.0 3880 104 5920 159 7090 190 7720 207 8020 215 8860 238
25 1.7 2610 70.1 4660 125 6830 183 8210 220 8470 227 8600 231 9180 246
30 2.1 2960 79.5 5430 146 7750 208 8810 237 9450 254 9120 245 9860 265
40 2.8 3570 95.8 6830 183 9110 245 10,220 274 10,230 275 10,230 275
50 3.4 4340 117 8310 223 10,060 270 10,520 282 10,800 290 10,800 290
60 4.1 4970 133 9680 260 10,850 291 11,100 298 11,100 298 11,100 298
80 5.5 6370 171 11,390 306 11,810 317 11,810 317 11,810 317
100 6.9 7590 204 12,070 324 12,090 325
125 8.6 9340 251 12,080 324
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
Table 34. Types CS820, CS823(1) and CS824 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint
for 2 in. / DN 50 Body Size at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.20 psig 0.20 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -14 mbar 14 mbar 0.07 to 0.17 bar
3 0.21 670 18.0 910 24.4 1280 34.4 1760 47.2 1920(1) 51.5(1) 2310 62.0 2770 74.4 3490 93.7
5 0.34 1080 29.0 1430 38.4 2230 59.9 3110 83.5 3440(1) 92.3(1) 4830 130 4970 133 6390 172
10 0.69 1510 40.5 2580(1) 69.3(1) 4040 109 5470 147 6680 179 8670 233 10,060 270 12,100 325
15 1.0 1900 51.0 3610 96.9 6220 167 8610 231 9800 263 12,320 331 13,570 364 17,260 463
20 1.4 2310 62.0 4520 121 7980 214 10,990 295 13,000 349 14,630 393 16,230 436
25 1.7 2620 70.3 5380 144 9690 260 13,480 362 16,010 430 17,180 461 18,510 497
30 2.1 2940 78.9 5910 159 11,080 297 15,240 409 18,190 488 19,450 522 19,930 535
40 2.8 3530 94.8 7770 209 14,390 386 18,740 503 21,510 577 22,830 613
50 3.4 4250 114 8860 238 17,160 461 22,320 599 23,060 619 23,060 619
60 4.1 4980 134 10,710 288 20,160 541 23,740 637 23,740 637 23,740 637
80 5.5 6310 169 13,640 366 25,290 679 26,330 707 26,330 707
100 6.9 7640 205 16,380 440 29,370 789
125 8.6 9370 252 19,980 536
1. Due to droop, the Type CS823 exhibits a 10% reduction in capacity for indicated conditions. Multiply listed values by a factor of 0.9.
2. Not available on the Type CS823.
3. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(2)(3)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
Bulletin 71.1:CS800
32
Table 35. Types CS820, CS823 and CS824 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.40 psig 0.40 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -28 mbar 28 mbar 0.07 to 0.17 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
3 0.21 820 22.0 1420 38.1 1960 52.6 2830 76.0 3200 85.9 3950 106 4160 112 4620 124
5 0.34 1060 28.5 1860 49.9 3220 86.4 4200 113 5020 135 5920 159 6570 176 8000 215
10 0.69 1590 42.7 3120 83.8 5230 140 6870 184 7600 204 8410 226 9580 257 11,220 301
15 1.0 1990 53.4 4090 110 6970 187 8880 238 9820 264 10,200 274 11,520 309 11,790 317
20 1.4 2310 62.0 4880 131 8440 227 10,380 279 11,160 300 11,490 309 12,630 339
25 1.7 2680 71.9 5640 151 9630 259 11,480 308 12,480 335 12,130 326 13,570 364
30 2.1 2980 80.0 6340 170 10,670 286 12,360 332 12,960 348 12,990 349 13,920 374
40 2.8 3660 98.3 7850 211 12,140 326 14,150 380 14,240 382 13,470 362
50 3.4 4360 117 9260 249 13,460 361 14,190 381 14,920 401 14,280 383
60 4.1 5000 134 10,860 292 14,740 396 14,910 400 15,260 410 14,620 393
80 5.5 6400 172 13,710 368 15,440 415 15,440 415 15,440 415
100 6.9 7670 206 15,900 427 16,200 435
125 8.6 9410 253 16,080 432
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
Table 36. Types CS820, CS823(1)(2) and CS824 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint
for 2 in. / DN 50 Body Size at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.40 psig 0.40 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -28 mbar 28 mbar 0.07 to 0.17 bar
3 0.21 730 19.6 1280 34.4 2140 57.4 2890 77.6 3400(2) 91.3(2) 4190 113 4800 129 6490 174
5 0.34 1150 30.9 1960 52.6 3440 92.3 4380 118 5700(2) 153(2) 6770 182 7960 214 11,840 318
10 0.69 1610 43.2 3260 87.5 5790 155 7870 211 9930 267 11,840 318 13,680 367 18,160 488
15 1.0 1980 53.2 4200 113 7760 208 10,520 282 13,510 363 16,080 432 18,220 489 20,810 559
20 1.4 2330 62.6 4950 133 9250 248 12,990 349 16,570 445 19,760 531 20,610 553
25 1.7 2660 71.4 5710 153 10,560 284 15,060 404 19,630 527 22,340 600 23,530 632
30 2.1 2940 78.9 6300 169 11,890 319 17,290 464 21,870 587 24,500 658 25,180 676
40 2.8 3600 96.6 7950 213 14,880 400 21,370 574 24,710 663 28,610 768
50 3.4 4280 115 9200 247 17,600 473 24,860 667 27,290 733 29,870 802
60 4.1 4980 134 10,890 292 20,430 549 29,670 797 29,670 797 30,930 830
80 5.5 6310 169 13,710 368 25,880 695 32,240 866 32,240 866
100 6.9 7650 205 16,620 446 31,200 838
125 8.6 9360 251 20,220 543
1. Type CS823 exhibits a 10% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.9.
2. Due to droop, the Type CS823 exhibits a 15% reduction in capacity for indicated conditions. Multiply listed values by a factor of 0.85.
3. Not available on the Type CS823.
4. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25(1) 1-3/8 / 35(3)(4)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
Bulletin 71.1:CS800
33
Figure 17. Type CS820IR Relief Curves (Blocked Open per Orice Size) at 2 psig / 0.14 bar Set Pressure
Figure 18. Type CS820IQ High Capacity Relief Curves (Blocked Open per Orice Size) at 2 psig / 0.14 bar Set Pressure
INLET PRESSURE, psig / bar
1 NPT VENT SIZE
OUTLET PRESSURE, psig / mbar
010 /
0.69
7 / 483
6.5 / 448
6 / 414
5.5 / 379
5 / 345
4.5 / 310
4 / 276
3.5 / 241
3 / 207
2.5 / 172
2 / 138
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
1-3/8 in. /
35 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
1 in. /
25 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
INLET PRESSURE, psig / bar
HIGH CAPACITY 2-1/2 NPT VENT SIZE
OUTLET PRESSURE, psig / mbar
010 /
0.69
7 / 483
6.5 / 448
6 / 414
5.5 / 379
5 / 345
4.5 / 310
4 / 276
3.5 / 241
3 / 207
2.5 / 172
2 / 138
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE 5/8 in. /
16 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
Bulletin 71.1:CS800
34
Table 37. Types CS820, CS823 and CS824 Internal Registration Flow Capacities for 5 psig / 0.34 bar Setpoint at 1% ABS Accuracy
SETPOINT ACCURACY: + / - 1% ABS SPRING
Droop Boost Set Range Part Number / Color
5 psig -0.20 psig 0.20 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -14 mbar 14 mbar 0.17 to 0.38 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)(2)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
10 0.69 850 22.8 850 22.8 1270 34.1 1530 41.1 1900 51.0 2000 53.7 2390 64.2 3240 87.0
15 1.0 1150 30.9 1150 30.9 1920 51.5 2150 57.7 2790 74.9 2790 74.9 3750 101 5170 139
20 1.4 1490 40.0 1520 40.8 2390 64.2 2870 77.0 3360 90.2 3870 104 5030 135
25 1.7 1770 47.5 1770 47.5 2850 76.5 3350 89.9 4480 120 4480 120 6560 176
30 2.1 2020 54.2 2150 57.7 3470 93.2 4300 115 5060 136 5720 154 8010 215
40 2.8 2590 69.5 2900 77.9 4730 127 5780 155 7740 208 9120 245
50 3.4 3130 84.0 3630 97.4 6250 168 7200 193 9720 261 14,940 401
60 4.1 3460 92.9 4150 111 7950 213 8520 229 12,940 347 20,040 538
80 5.5 5070 136 5940 160 13,910 373 15,510 416 15,510 416
100 6.9 6800 183 8430 226 18,840 506
125 8.6 9090 244 15,390 413
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
2. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
SETPOINT ACCURACY: + / - 1% ABS SPRING
Droop Boost Set Range Part Number / Color
5 psig -0.20 psig 0.20 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -14 mbar 14 mbar 0.17 to 0.38 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 930 25.0 940 25.2 1290 34.6 1760 47.2 1910 51.3 2320 62.3 2390 64.2 3300 88.6
15 1.0 1220 32.8 1220 32.8 1810 48.6 2370 63.6 2660 71.4 2860 76.8 3570 95.8 4320 116
20 1.4 1590 42.7 1590 42.7 2250 60.4 2950 79.2 3110 83.5 3880 104 4580 123
25 1.7 1900 51 1900 51.0 2730 73.3 3570 95.8 3890 104 4370 117 5790 155
30 2.1 2160 58 2200 59.1 3150 84.6 4140 111 4290 115 5380 144 6200 166
40 2.8 2690 72 2760 74.1 3750 101 4980 134 5110 137 6560 176
50 3.4 3250 87 3310 88.9 4650 125 6190 166 6500 175 8020 215
60 4.1 3850 103 4160 112 5690 153 7090 190 7410 199 8780 236
80 5.5 5130 138 5290 142 7500 201 8570 230 9230 248
100 6.9 6100 164 6100 164 9000 242
125 8.6 7320 197 7430 200
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
Bulletin 71.1:CS800
35
Table 38. Types CS820, CS823 and CS824 Internal Registration Flow Capacities for 5 psig / 0.34 bar Setpoint at 2% ABS Accuracy
SETPOINT ACCURACY: + / - 2% ABS SPRING
Droop Boost Set Range Part Number / Color
5 psig -0.39 psig 0.39 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -27 mbar 27 mbar 0.17 to 0.38 bar
SETPOINT ACCURACY: + / - 2% ABS SPRING
Droop Boost Set Range Part Number / Color
5 psig -0.39 psig 0.39 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -27 mbar 27 mbar 0.17 to 0.38 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)(2)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
10 0.69 1120 30.1 1540 41.3 2330 62.6 2870 77.0 3840 103 3880 104 5060 136 6180 166
15 1.0 1820 48.9 1950 52.3 3410 91.5 4020 108 5440 146 5830 157 7730 208 10,160 273
20 1.4 2250 60.4 2730 73.3 4380 118 5510 148 7550 203 8580 230 10,870 292
25 1.7 2540 68.2 3330 89.4 5560 149 6650 179 8550 230 10,580 284 13,260 356
30 2.1 2930 78.7 4050 109 6360 171 8380 225 10,580 284 13,250 356 16,600 446
40 2.8 3600 96.6 5280 142 8830 237 11,870 319 14,770 397 16,120 433
50 3.4 4270 115 6430 173 12,330 331 15,450 415 17,460 469 21,810 586
60 4.1 4890 131 8470 227 15,400 413 19,500 524 20,660 555 25,170 676
80 5.5 6240 168 12,210 328 21,390 574 23,340 627 23,340 661
100 6.9 7590 204 15,980 429 25,630 688
125 8.6 9350 251 19,730 530
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
2. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 1360 36.5 1600 43.0 2170 58.3 2940 78.9 3480 93.4 3780 102 4560 122 5730 154
15 1.0 1890 50.7 2120 56.9 3140 84.3 4170 112 5030 135 5710 153 6760 182 7550 203
20 1.4 2210 59.3 2820 75.7 3960 106 5240 141 6010 161 7140 192 8240 221
25 1.7 2520 67.7 3250 87.2 4880 131 6150 165 7290 196 7670 206 9890 266
30 2.1 2660 71.4 3830 103 5290 142 7400 199 8040 216 8930 240 10,850 291
40 2.8 3370 90.5 5000 134 7010 188 8740 235 9440 253 11,050 297
50 3.4 3990 107 5870 158 8470 227 10,000 269 11,420 307 12,550 337
60 4.1 4910 132 7150 192 9430 253 11,230 302 12,620 339 13,220 355
80 5.5 6180 166 9260 249 11,910 320 13,760 369 14,570 391
100 6.9 7610 204 10,620 285 13,920 374
125 8.6 9160 246 11,740 315
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
Bulletin 71.1:CS800
36
Table 39. Types CS820, CS823 and CS824 Internal Registration Flow Capacities for 5 psig / 0.34 bar Setpoint at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
5 psig -0.50 psig 0.50 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -34 mbar 34 mbar 0.17 to 0.38 bar
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
5 psig -0.50 psig 0.50 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -34 mbar 34 mbar 0.17 to 0.38 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)(2)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
10 0.69 1280 34.4 1880 50.5 2940 78.9 3530 94.8 4830 130 4970 133 6060 163 7680 206
15 1.0 1880 50.5 2410 64.7 4310 116 5160 139 7240 194 7610 204 9790 263 12,150 326
20 1.4 2300 61.7 3310 88.9 5610 151 6900 185 9230 248 10,390 279 12,770 343
25 1.7 2660 71.4 4200 113 7040 189 8220 221 10,950 294 12,690 341 15,480 416
30 2.1 2950 79.2 4990 134 8220 221 10,580 284 13,060 351 14,810 398 19,260 517
40 2.8 3640 97.7 6360 171 11,080 297 14,630 393 17,710 475 20,120 540
50 3.4 4280 115 8000 215 14,370 386 18,760 504 21,200 569 23,760 638
60 4.1 4940 133 9900 266 17,590 472 21,760 584 23,760 638 27,480 738
80 5.5 6290 169 13,260 356 22,900 615 27,200 730 27,200 730
100 6.9 7650 205 16,380 440 28,030 753
125 8.6 9390 252 20,030 538
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
2. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 1450 38.9 1870 50.2 2650 71.1 3640 97.7 4170 112 5190 139 5760 155 7240 194
15 1.0 1910 51.3 2640 70.9 3920 105 5070 136 6050 162 6970 187 7960 214 9410 253
20 1.4 2260 60.7 3440 92.3 4910 132 6530 175 7520 202 8800 236 9670 260
25 1.7 2640 70.9 4060 109 5920 159 7510 202 8570 230 9620 258 11,320 304
30 2.1 2710 72.8 4700 126 6690 180 8750 235 9900 266 10,670 286 12,160 326
40 2.8 3410 91.5 6000 161 8000 215 10,100 271 11,330 304 13,220 355
50 3.4 4100 110 7260 195 10,070 270 11,540 310 13,030 350 14,920 401
60 4.1 4950 133 8610 231 11,250 302 12,880 346 14,220 382 15,630 420
80 5.5 6260 168 10,690 287 13,890 373 15,400 413 16,290 437
100 6.9 7660 206 12,590 338 15,980 429
125 8.6 9300 250 14,860 399
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
Bulletin 71.1:CS800
37
Table 40. Types CS820, CS823 and CS824 Internal Registration Flow Capacities for 5 psig / 0.34 bar Setpoint at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
5 psig -1.0 psig 1.0 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -69 mbar 69 mbar 0.17 to 0.38 bar
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
5 psig -1.0 psig 1.0 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -69 mbar 69 mbar 0.17 to 0.38 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)(2)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
10 0.69 1500 40.3 2840 76.2 4780 128 5970 160 8000 215 9400 252 10,550 283 13,590 365
15 1.0 1970 52.9 3870 104 6960 187 8540 229 11,770 316 12,740 342 15,830 425 19,260 517
20 1.4 2330 62.6 4700 126 8600 231 10,760 289 14,810 398 16,600 446 19,810 532
25 1.7 2660 71.4 5700 153 10,060 270 13,260 356 17,350 466 19,690 529 21,840 586
30 2.1 2970 79.7 6500 175 11,660 313 15,530 417 20,540 551 20,950 562 24,770 665
40 2.8 3670 98.5 7910 212 14,470 389 20,460 549 24,480 657 25,870 695
50 3.4 4320 116 9340 251 17,690 475 23,180 622 29,880 802 30,750 826
60 4.1 5010 135 11,120 299 20,100 540 27,820 747 31,780 853 33,840 909
80 5.5 6340 170 13,740 369 25,800 693 34,910 937 36,270 974
100 6.9 7710 207 16,900 454 31,450 844
125 8.6 9410 253 20,580 553
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
2. Type CS824 exhibits a 20% reduction in capacity for indicated orice size. Multiply listed values by a factor of 0.8.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 1530 41.1 2710 72.8 4370 117 5880 158 6680 179 8470 227 9740 262 12,040 323
15 1.0 1960 52.6 3750 101 6250 168 7870 211 9620 258 11,330 304 12,580 338 15,210 408
20 1.4 2310 62.0 4720 127 7850 211 10,140 272 11,480 308 13,870 372 14,580 391
25 1.7 2640 70.9 5520 148 9360 251 10,840 291 13,070 351 15,030 404 16,530 444
30 2.1 2880 77.3 6390 172 10,570 284 12,760 343 14,620 393 16,620 446 16,990 456
40 2.8 3560 95.6 7870 211 12,500 336 15,170 407 16,890 453 19,270 517
50 3.4 4240 114 9360 251 14,840 398 16,650 447 18,310 492 21,270 571
60 4.1 4950 133 11,000 295 16,380 440 17,530 471 19,970 536 22,640 608
80 5.5 6310 169 13,840 372 19,090 513 20,400 548 22,710 610
100 6.9 7690 206 16,280 437 21,380 574
125 8.6 9390 252 19,280 518
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
Bulletin 71.1:CS800
38
Figure 19. Type CS820IR Relief Curves (Blocked Open per Orice Size) at 5 psig / 0.34 bar Set Pressure
Figure 20. Type CS820IQ High Capacity Relief Curves (Blocked Open per Orice Size) at 5 psig / 0.34 bar Set Pressure
INLET PRESSURE, psig / bar
1 NPT VENT SIZE
OUTLET PRESSURE, psig / mbar
010 /
0.69
10 / 690
9.5 / 655
9 / 621
8.5 / 586
8 / 552
7.5 / 517
7 / 483
6.5 / 448
6 / 414
5.5 / 379
5 / 345
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
1-3/8 in. /
35 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1 in. /
25 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
INLET PRESSURE, psig / bar
HIGH CAPACITY 2-1/2 NPT VENT SIZE
OUTLET PRESSURE, psig / mbar
010 /
0.69
10 / 690
9.5 / 655
9 / 621
8.5 / 586
8 / 552
7.5 / 517
7 / 483
6.5 / 448
6 / 414
5.5 / 379
5 / 345
20 /
1.4
30 /
2.1
40 /
2.8
50 /
3.4
60 /
4.1
70 /
4.8
80 /
5.5
90 /
6.2
100 /
6.9
110 /
7.6
120 /
8.3
1-3/8 in. /
35 mm
ORIFICE
1 in. /
25 mm
ORIFICE
7/8 in. /
22 mm
ORIFICE
3/4 in. /
19 mm
ORIFICE
5/8 in. /
16 mm
ORIFICE
1/2 in. /
13 mm
ORIFICE
3/8 in. /
9.5 mm
ORIFICE
1/4 in. /
6.4 mm
ORIFICE
Bulletin 71.1:CS800
39
Table 41. Types CS850 and CS854 Internal Registration Flow Capacities for 7 psig / 0.48 bar Setpoint at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
7 psig -0.7 psig 0.7 psig 5 to 10 psig GE30344X012 / Green with
White Stripe
0.48 bar -48 mbar 48 mbar 345 to 690 mbar
psig bar Body Size: 2 in. / DN 50
10 0.69 750 20.1 1290 34.6 1750 47.0 2140 57.4 2640 70.9 3170 85.1 3550 95.3 4540 122
15 1.0 1710 45.9 1950 52.3 2740 73.6 3530 94.8 4050 109 4750 128 5860 157 7640 205
20 1.4 2150 57.7 2500 67.1 3440 92.3 4470 120 5500 148 6600 177 7850 211
25 1.7 2380 63.9 3070 82.4 4190 113 5390 145 6150 165 8150 219 9360 251
30 2.1 2870 77.0 3570 95.8 4900 132 6300 169 7430 200 9980 268 11,640 313
40 2.8 3540 95.0 4630 124 6570 176 8610 231 10,430 280 12,830 344
50 3.4 4210 113 5530 149 7570 203 10,550 283 12,380 332 16,070 431
60 4.1 4790 129 6690 180 9970 268 12,780 343 14,680 394 19,320 519
80 5.5 6070 163 8740 235 14,170 380 16,720 449 17,930 481
100 6.9 7690 206 11,310 304 18,060 485
125 8.6 9220 248 14,520 390
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 1140 30.6 1250 33.6 1710 45.9 2030 54.5 2550 68.5 3140 84.3 3370 90.5 4290 115
15 1.0 1590 42.7 1810 48.6 2660 71.4 3150 84.6 3840 103 4490 121 5480 147 6860 184
20 1.4 2010 54.0 2460 66.0 3400 91.3 4170 112 4590 123 5710 153 6740 181
25 1.7 2400 64.4 2980 80.0 4190 113 5030 135 5970 160 6790 182 7800 209
30 2.1 2750 73.8 3450 92.6 4800 129 5840 157 7050 189 7890 212 9070 244
40 2.8 3420 91.8 4380 118 6180 166 7350 197 8310 223 9760 262
50 3.4 3990 107 5270 142 7450 200 8900 239 11,530 310 11,530 310
60 4.1 4730 127 6220 167 8470 227 10,410 280 11,550 310 13,300 357
80 5.5 5950 160 7700 207 11,070 297 13,150 353 15,300 411
100 6.9 7300 196 9480 255 12,400 333
125 8.6 8660 233 11,250 302
Bulletin 71.1:CS800
40
Table 42. Types CS850 and CS854 Internal Registration Flow Capacities for 7 psig / 0.48 bar Setpoint at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
7 psig -1.4 psig 1.4 psig 5 to 10 psig GE30344X012 / Green with
White Stripe
0.48 bar -0.10 bar 0.10 bar 345 to 690 mbar
psig bar Body Size: 2 in. / DN 50
10 0.69 1070 28.7 2230 59.9 3160 84.8 4040 109 4980 134 5880 158 6910 186 8860 238
15 1.0 1820 48.9 3180 85.4 4610 124 6210 167 7360 198 9080 244 10,790 290 14,360 386
20 1.4 2300 61.7 4110 110 6040 162 8060 216 9940 267 11,680 314 13,270 356
25 1.7 2640 70.9 4970 133 7490 201 10,160 273 11,780 316 13,930 374 16,610 446
30 2.1 2990 80.3 5710 153 8680 233 11,550 310 14,060 377 16,300 438 19,820 532
40 2.8 3670 98.5 7360 198 11,440 307 14,910 400 18,130 487 21,300 572
50 3.4 4350 117 8840 237 13,780 370 18,390 494 21,560 579 25,210 677
60 4.1 5010 135 10,560 284 17,310 465 21,630 581 25,080 673 28,560 767
80 5.5 6320 170 13,510 363 22,290 598 25,840 694 27,620 742
100 6.9 7750 208 16,590 445 26,950 724
125 8.6 9400 252 19,680 528
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 1350 36.2 2090 56.1 3100 83.2 3850 103 4760 128 5780 155 6270 168 8620 231
15 1.0 1870 50.2 3060 82.1 4780 128 5830 157 6990 188 8540 229 9610 258 12,270 329
20 1.4 2190 58.8 3930 106 5970 160 7450 200 8850 238 10,690 287 12,280 330
25 1.7 2550 68.5 4810 129 7400 199 8970 241 10,630 285 12,880 346 13,610 365
30 2.1 2900 77.9 5520 148 8440 227 10,320 277 12,400 333 14,340 385 15,400 413
40 2.8 3610 96.9 7030 189 10,610 285 12,970 348 15,010 403 17,140 460
50 3.4 4260 114 8370 225 12,500 336 15,010 403 18,020 484 19,120 513
60 4.1 4880 131 9850 264 14,320 384 16,940 455 19,130 514 20,780 558
80 5.5 6250 168 12,680 340 17,670 474 19,700 529 21,670 582
100 6.9 7610 204 15,170 407 19,700 529
125 8.6 9290 249 17,740 476
Bulletin 71.1:CS800
41
SETPOINT ACCURACY: +/- 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
10 psig -1 psig 1 psig 5 to 10 psig GE30344X012 / Green with
White Stripe
0.69 bar -0.07 bar 0.07 mbar 345 to 690 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
15 1.0 1300 34.9 1780 47.9 2460 66.1 2780 74.7 3140 84.2 4040 108 4040 108 6010 161
20 1.4 1960 52.6 2240 60.1 2980 80.0 3640 97.5 4370 117 5230 140 6060 163
25 1.7 2430 65.2 2860 76.9 4020 108 4780 128 5180 139 6530 175 7210 193
30 2.1 2910 78.1 3210 86.2 4470 120 5720 153 6540 175 7400 198 8420 226
40 2.8 3560 95.4 4080 109 6090 163 7150 192 8680 233 9860 264
50 3.4 4230 113 5020 135 7760 208 9730 261 10,750 288 11,210 300
60 4.1 4790 129 6360 170 8900 238 10,530 282 12,960 347 13,720 368
80 5.5 6110 164 7950 213 10,840 290 13,920 373 15,610 418
100 6.9 7610 204 9730 261 12,780 343
125 8.6 8960 240 11,890 319
Table 43. Types CS850 and CS854 Internal Registration Flow Capacities for 10 psig / 0.69 bar Setpoint at 10% Accuracy
SETPOINT ACCURACY: +/- 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
10 psig -2 psig 2 psig 5 to 10 psig GE30344X012 / Green with
White Stripe
0.69 bar -1.4 bar 1.4 bar 345 to 690 mbar
Table 44. Types CS850 and CS854 Internal Registration Flow Capacities for 10 psig / 0.69 bar Setpoint at 20% Accuracy
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
15 1.0 1820 48.8 3160 84.8 4670 125 6050 162 6650 178 8250 221 9420 252 11,730 314
20 1.4 2190 58.8 3850 103 6450 173 7820 210 9380 251 11,000 295 12,560 336
25 1.7 2570 69.0 4920 132 8110 217 9780 262 11,240 301 14,080 377 14,750 395
30 2.1 2950 79.2 5780 155 9090 244 11,710 314 14,110 378 15,450 414 17,370 465
40 2.8 3620 97.0 7330 197 11,740 315 14,830 398 16,820 451 19,590 525
50 3.4 4310 116 8910 239 14,510 389 17,600 472 19,840 532 22,180 594
60 4.1 4940 133 10,410 279 16,430 440 19,720 528 23,450 628 23,920 641
80 5.5 6260 168 13,140 352 20,040 537 23,940 641 28,110 753
100 6.9 7660 205 16,210 434 23,050 618
125 8.6 9290 249 19,320 517.8
Bulletin 71.1:CS800
42
Table 45. Types CS800, CS803 and CS804 External Registration Flow Capacities for 7 in. w.c. / 17 mbar Setpoint
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
7 in. w.c. -2 in. w.c. 2 in. w.c. 5.5 to 8.5 in. w.c. GE30338X012 / Black
17 mbar -5 mbar 5 mbar 13 to 21 mbar
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
0.4 0.03 550 14.8 780 20.9 1090 29.3 1000 26.8 1390 37.3 1640 44.0 1780 47.8
0.51 0.04 360 9.7 630 16.9 930 25.0 1100 29.5 1530 41.1 1530 41.1 1940 52.1 2400 64.4
1 0.07 500 13.4 830 22.3 1290 34.6 1730 46.4 1980 53.2 2320 62.3 2860 76.8 3780 102
2 0.14 720 19.3 1330 35.7 2010 54.0 2550 68.5 3260 87.5 3740 100 4360 117 5930 159
3 0.21 870 23.4 1650 44.3 2500 67.1 3180 85.4 4130 111 4760 128 5250 141 7110 191
5 0.34 1120 30.1 2070 55.6 3410 91.5 4380 118 5620 151 6400 172 7500 201 9370 252
10 0.69 1480 39.7 2990 80.3 5010 135 6480 174 8420 226 9820 264 11,600 311 14,600 392
15 1.0 1810 48.6 3710 99.6 6410 172 8320 223 10,800 290 12,770 343 15,130 406 19,610 526
20 1.4 2170 58.3 4560 122 7720 207 10,750 289 13,660 367 15,080 405 18,520 497
25 1.7 2520 67.7 5320 143 9030 242 12,220 328 16,340 439 18,630 500 21,950 589
30 2.1 2770 74.4 5990 161 10,440 280 13,770 370 17,790 478 20,350 546
40 2.8 3400 91.3 7360 198 12,490 335 16,720 449 20,320 546 25,650 689
50 3.4 4010 108 8700 234 14,510 390 18,750 503 24,220 650 26,390 709
60 4.1 4630 124 10,110 271 16,810 451 22,130 594 26,490 711
80 5.5 5960 160 12,550 337 19,580 526
100 6.9 7280 195 15,030 404 22,540 605
125 8.6 8150 219 16,990 456
Black areas show where indicated droop/boost would be exceeded regardless of capacity.
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
Table 46. Types CS800, CS803 and CS804 External Registration Flow Capacities for 10 in. w.c. / 25 mbar Setpoint
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
10 in. w.c. -2 in. w.c. 2 in. w.c. 5.5 to 8.5 in. w.c. GE30339X012 / Purple
25 mbar -5 mbar 5 mbar 13 to 21 mbar
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
0.51 0.04 310 8.3 560 15.0 640 17.2 990 26.6 1290 34.6 1250 33.6 1250 33.6 1970 52.9
1 0.07 470 12.6 750 20.1 1130 30.3 1430 38.4 1850 49.7 2210 59.3 2520 67.7 3530 94.8
2 0.14 690 18.5 1250 33.6 1530 41.1 1910 51.3 2880 77.3 3560 95.6 3750 101 5110 137
3 0.21 850 22.8 1540 41.3 2260 60.7 2860 76.8 3690 99.1 4350 117 4690 126 6320 170
5 0.34 1080 29.0 2050 55.0 3090 83.0 3850 103 4810 129 5850 157 6860 184 8180 220
10 0.69 1420 38.1 2590 69.5 4470 120 5460 147 7370 198 8340 224 10,130 272 13,030 350
15 1.0 1750 47.0 3500 94.0 5880 158 7500 201 9380 252 11,120 299 13,700 368 18,810 505
20 1.4 2090 56.1 4200 113 7260 195 9470 254 11,860 318 14,270 383 16,060 431
25 1.7 2450 65.8 4950 133 8690 233 11,450 307 14,720 395 17,400 467 18,860 506
30 2.1 2790 74.9 5600 150 10,170 273 12,560 337 16,420 441 19,700 529
40 2.8 3390 91.0 6850 184 12,420 333 15,470 415 20,510 551 24,130 648
50 3.4 4010 108 8200 220 14,090 378 17,960 482 23,020 618 29,010 779
60 4.1 4620 124 9500 255 16,410 441 19,770 531 26,280 706
80 5.5 5920 159 11,900 320 19,050 511
100 6.9 7200 193 14,270 383 21,960 590
125 8.6 8080 217 15,680 421
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
Bulletin 71.1:CS800
43
Table 47. Types CS800, CS803 and CS804 External Registration Flow Capacities for 14 in. w.c. / 35 mbar Setpoint
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
14 in. w.c. -2 in. w.c. 2 in. w.c. 10 to 16 in. w.c. GE30340X012 / White
35 mbar -5 mbar 5 mbar 25 to 40 mbar
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
1 0.07 430 11.5 520 14.0 1210 32.5 1210 32.5 1290 34.6 1540 41.3 1790 48.1 2510 67.4
2 0.14 630 16.9 990 26.6 1690 45.4 2010 54.0 2440 65.5 2900 77.9 3350 89.9 4500 121
3 0.21 770 20.7 1350 36.2 1870 50.2 2540 68.2 2890 77.6 3730 100 4230 114 5660 152
5 0.34 1030 27.7 1800 48.3 2760 74.1 3280 88.1 4020 108 5320 143 5730 154 7160 192
10 0.69 1380 37.0 2560 68.7 4000 107 5110 137 6320 170 7700 207 8530 229 13,160 353
15 1.0 1700 45.6 3220 86.4 4980 134 6400 172 8180 220 10,270 276 11,690 314 19,100 513
20 1.4 1970 52.9 4040 109 6270 168 8110 218 10,620 285 15,320 411 17,550 471
25 1.7 2340 62.8 4890 131 7810 210 9570 257 12,530 336 18,870 507 20,710 556
30 2.1 2710 72.8 5320 143 8280 222 10,890 292 13,070 351 19,710 529
40 2.8 3300 88.6 6900 185 10,980 295 13,280 357 16,560 444 26,440 710
50 3.4 3890 104 8290 223 12,990 349 16,060 431 18,020 484 30,650 823
60 4.1 4490 121 9710 261 15,400 413 18,340 492 21,170 568
80 5.5 5770 155 12,450 334 18,900 507
100 6.9 7000 188 15,030 404 21,320 572
125 8.6 7900 212 16,680 448
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
Table 48. Types CS800, CS803 and CS804 External Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
1 psig -5.5 in. w.c. 5.5 in. w.c. 14 to 30 in. w.c. GE30341X012 / Dark Green
0.07 bar -14 mbar 14 mbar 35 to 75 mbar
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
2 0.14 680 18.3 1090 29.3 1830 49.1 2540 68.2 2950 79.2 3390 91.0 4140 111 6030 162
3 0.21 870 23.4 1500 40.3 2530 67.9 3360 90.2 4300 115 4870 131 5700 153 7310 196
5 0.34 1170 31.4 2050 55.0 3430 92.1 4690 126 6110 164 7000 188 8210 220 9760 262
10 0.69 1490 40.0 2960 79.5 4840 130 6550 176 8320 223 9480 255 11,380 306 14,700 395
15 1.0 1810 48.6 3790 102 6610 177 8740 235 10,590 284 11,840 318 13,980 375 20,000 537
20 1.4 2130 57.2 4920 132 7750 208 10,220 274 12,360 332 14,930 401 16,240 436
25 1.7 2580 69.3 5590 150 9070 244 11,790 317 14,230 382 17,970 482 18,370 493
30 2.1 2900 77.9 6570 176 10,070 270 13,200 354 16,450 442 19,880 534 22,620 607
40 2.8 3640 97.7 7830 210 12,890 346 15,860 426 19,200 515 20,760 557
50 3.4 4420 119 9360 251 15,480 416 18,380 493 22,670 609 24,280 652
60 4.1 5100 137 10,910 293 18,120 486 21,070 566 24,680 663 26,750 718
80 5.5 6460 173 13,140 353 20,770 558 23,970 644 27,780 746
100 6.9 7930 213 16,420 441 23,090 620
125 8.6 8730 234 19,710 529
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS803.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
Bulletin 71.1:CS800
44
Table 49. Types CS820, CS823 and CS824 External Registration Flow Capacities for 2 psig / 138 mbar Setpoint at 20% Accuracy
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.40 psig 0.40 psig 1 to 2.5 psig GE30342X012 / Dark Blue
138 mbar -28 mbar 28 mbar 69 to 170 mbar
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
3 0.21 760 20.4 1220 32.8 1820 48.9 2780 74.6 2780 74.6 4180 112 5360 144 5540 149
5 0.34 1080 29.0 1770 47.5 2880 77.3 3710 99.6 4840 130 5570 150 6950 187 8570 230
10 0.69 1460 39.2 2560 68.7 4400 118 6330 170 7400 197 8750 235 9180 246 12,710 341
15 1.0 1760 47.2 3560 95.6 5540 149 7870 211 9590 257 11,280 303 11,890 319 15,220 409
20 1.4 2090 56.1 4310 116 6680 179 9610 258 11,940 321 13,420 360 14,300 384
25 1.7 2350 63.1 5100 137 7600 204 10,780 289 13,440 361 14,020 376 15,510 416
30 2.1 2710 72.8 5760 155 8980 241 12,410 333 15,040 404 15,770 423 17,220 462
40 2.8 3390 91.0 7290 196 10,560 284 14,810 398 16,840 452 18,260 490
50 3.4 3970 107 8530 229 12,490 335 16,790 451 18,370 493 19,490 523
60 4.1 4570 123 9930 267 14,050 377 18,570 499 19,310 518 21,120 567
80 5.5 5880 158 12,420 333 16,150 434 20,330 546 21,450 576
100 6.9 7250 195 14,670 394 18,850 506
125 8.6 8960 241 16,450 442
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
Table 50. Types CS820, CS823 and CS824 External Registration Flow Capacities for 5 psig / 345 mbar Setpoint at 20% Accuracy
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
5 psig -1 psig 1 psig 2.5 to 5.5 psig GE30343X012 / Yellow
345 mbar -0.07 mbar 69 mbar 170 to 380 mbar
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
10 0.69 1430 38.4 2320 62.3 4370 117 4780 128 5920 159 7360 198 8670 233 10,820 291
15 1.0 1800 48.3 3370 90.5 5370 144 7030 189 8520 229 11,130 299 11,870 319 15,610 419
20 1.4 2120 56.9 4510 121 6640 178 8920 240 11,730 315 13,420 360 15,360 412
25 1.7 2430 65.2 5340 143 7770 209 11,420 307 14,150 380 15,880 426 18,530 497
30 2.1 2730 73.3 5960 160 9120 245 13,180 354 15,890 427 17,100 459 20,070 539
40 2.8 3410 91.5 7210 194 11,410 306 16,620 446 18,800 505 19,890 534
50 3.4 4040 109 8640 232 13,540 364 17,940 482 21,260 571 24,110 647
60 4.1 4560 122 10,140 272 15,530 417 21,730 583 24,520 658 26,500 711
80 5.5 5880 158 12,840 345 20,480 550 25,360 681 29,700 797
100 6.9 7230 194 15,560 418 23,710 637
125 8.6 8910 239 20,320 546
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
1. Not available on the Type CS823.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35(1)
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
Bulletin 71.1:CS800
45
Table 51. Types CS850 and CS854 External Registration Flow Capacities for 7 psig / 483 mbar Setpoint at 20% Accuracy
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
7 psig -1.4 psig 1.4 psig 5 to 10 psig GE30344X012 /
Green with White Stripe
483 mbar -96 mbar 96 mbar 345 to 690 mbar
psig bar Body Sizes: 1-1/2 and 2 in. / DN 40 and 50
10 0.69 1410 37.9 1750 47.0 2030 54.5 3630 97.4 4130 111 4770 128 5390 145 7360 198
15 1.0 1880 50.5 2840 76.2 4040 109 5350 144 6970 187 7280 195 9050 243 12,240 329
20 1.4 2230 59.9 3710 99.6 5200 140 6840 184 8520 229 9550 256 11,390 306
25 1.7 2590 69.5 3710 99.6 6250 168 8580 230 10,630 285 11,740 315 13,260 356
30 2.1 2860 76.8 5140 138 7120 191 9970 268 12,780 343 14,020 376 14,890 400
40 2.8 3540 95.0 6440 173 9050 243 12,630 339 14,690 394 16,690 448
50 3.4 4290 115 7710 207 11,610 312 14,930 401 18,140 487 21,190 569
60 4.1 4980 134 8920 240 13,370 359 16,650 447 20,110 540 23,550 632
80 5.5 6010 161 11,490 309 17,230 463 19,220 516 24,430 656
100 6.9 7360 198 15,110 406 20,130 540
125 8.6 9090 244 17,490 470
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
1/4 / 6.4 3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22 1 / 25 1-3/8 / 35
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
Table 52. Types CS805 and CS806 Internal Registration Flow Capacities for 7 in. w.c. / 17 mbar Setpoint
for 1-1/2 in. / DN 40 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
7 in. w.c. -1 in. w.c. 2 in. w.c. 5.5 to 8.5 in. w.c. GE30338X012 / Black
17 mbar -2.5 mbar 5 mbar 13 to 21 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
0.51 0.04 730 19.6 850 22.8 910 24.4
1 0.07 580 15.6 800 21.5 880 23.6 1050 28.2 1060 28.5
2 0.14 900 24.2 1140 30.6 1520 40.8 1610 43.2 1610 43.2
3 0.21 1080 29.0 1480 39.7 1920 51.5 2250 60.4 2260 60.7
5 0.34 1620 43.5 2120 56.9 2560 68.7 3370 90.5 3470 93.2
10 0.69 2520 67.7 3100 83.2 5200 140 5620 151 5680 153
15 1.0 3150 84.6 5350 144 6400 172 7500 201 7140 192
20 1.4 3910 105 6500 175 7200 193 7500 201 8610 231
25 1.7 4680 126 7600 204 7600 204 7600 204 8610 231
30 2.1 5160 139 7700 207 7700 207 7700 207 9550 256
40 2.8 6140 165 7800 209 7900 212 7900 212 9550 256
50 3.4 7120 191 7900 212 8000 215 8000 215 9550 256
60 4.1 7500 201 8000 215 8000 215 8000 215
80 5.5 8500 228 8500 228
100 6.9 8500 228 8500 228
125 8.6 8500 228
Black areas show where indicated droop/boost would be exceeded regardless of capacity.
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Bulletin 71.1:CS800
46
Table 54. Types CS805 and CS806 Internal Registration Flow Capacities for 7 in. w.c. / 17 mbar Setpoint for 2 in. / DN 50 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
7 in. w.c. -1 in. w.c. 2 in. w.c. 5.5 to 8.5 in. w.c. GE30338X012 / Black
17 mbar -2.5 mbar 5 mbar 13 to 21 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
0.51 0.04 ----870 23.4 1020 27.4 1270 34.1
1 0.07 540 14.5 1010 27.1 1190 31.9 1530 41.1 1510 40.5
2 0.14 900 24.2 1480 39.7 1710 45.9 2040 54.8 2290 61.5
3 0.21 1200 32.2 1830 49.1 2410 64.7 2750 73.8 3110 83.5
5 0.34 1670 44.8 2520 67.7 3280 88.1 4410 118 4600 124
10 0.69 2750 73.8 4190 113 6010 161 7210 194 7730 208
15 1.0 3670 98.5 6350 171 8140 219 9430 253 9750 262
20 1.4 4630 124 7910 212 9730 261 11,180 300 11,480 308
25 1.7 5560 149 9260 249 11,140 299 12,500 336 12,690 341
30 2.1 6330 170 10,350 278 12,500 336 12,500 336 13,830 371
40 2.8 7930 213 12,000 322 12,500 336 12,500 336 16,130 433
50 3.4 9490 255 12,140 326 12,500 336 12,500 336 17,060 458
60 4.1 10,800 290 12,500 336 12,500 336 12,500 336
80 5.5 11,870 319 12,500 336
100 6.9 12,500 336 12,500 336
125 8.6 12,500 336
Black areas show where indicated droop/boost would be exceeded regardless of capacity.
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Table 53. Types CS805 and CS806 Internal Registration Flow Capacities for 7 in. w.c. / 17 mbar Setpoint
for 2 in. / DN 50 Body Size, Enhanced Low Inlet (LIN) Option
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
7 in. w.c. -1 in. w.c. 2 in. w.c. 5.5 to 8.5 in. w.c. GE49043X012 / Brown
17 mbar -2.5 mbar 5 mbar 13 to 21 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
0.51 0.04 970 26.2 1140 30.8 1320 35.7
1 0.07 710 19.1 1120 30.1 1270 34.2 1490 40.1 1990 53.5
2 0.14 1140 30.6 1710 45.9 2190 59.0 2570 69.1 2970 79.9
3 0.21 1460 39.3 2090 56.1 2580 69.3 3180 85.4 3750 101
5 0.34 2040 54.8 2670 71.9 4000 108 4370 118 5590 150
10 0.69 3120 84 4590 123 7120 191 7680 206 8300 223
15 1.0 4030 108 6160 166 8950 241 9650 259 10,610 285
20 1.4 4770 128 7550 203 10,990 295 11,860 318 12,660 340
25 1.7 5640 152 9170 246 12,680 341 12,930 347 13,610 365
Black areas show where indicated droop/boost would be exceeded regardless of capacity.
Bulletin 71.1:CS800
47
Table 55. Types CS805 and CS806 Internal Registration Flow Capacities for 14 in. w.c. / 35 mbar Setpoint
for 1-1/2 in. / DN 40 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
14 in. w.c. -2 in. w.c. 2 in. w.c. 10 to 16 in. w.c. GE30340X012 / White
35 mbar -5 mbar 5 mbar 25 to 40 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
1 0.07 540 14.5 830 22.3 870 23.4 1450 38.9 1490 40.0
2 0.14 880 23.6 1340 36.0 1440 38.7 2080 55.8 2230 59.9
3 0.21 1210 32.5 1770 47.5 2250 60.4 2390 64.2 3000 80.5
5 0.34 1650 44.3 2570 69.0 3340 89.7 3970 107 4150 111
10 0.69 2750 73.8 4270 115 5510 148 6270 168 6560 176
15 1.0 3680 98.8 5820 156 7370 198 7640 205 8060 216
20 1.4 4830 130 7080 190 8540 229 9200 247 9200 247
25 1.7 5620 151 8380 225 9600 258 9600 258 10,000 269
30 2.1 6360 171 9110 245 10,530 283 10,530 283 10,810 290
40 2.8 7940 213 10,740 288 11,870 319 11,870 319 11,870 319
50 3.4 9490 255 11,730 315 12,350 332 12,350 332 12,350 332
60 4.1 10,510 282 12,370 332 12,870 346 13,160 353
80 5.5 12,660 340 13,170 354
100 6.9 13,170 354 13,170 354
125 8.6 13,630 366
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Table 56. Types CS805 and CS806 Internal Registration Flow Capacities for 14 in. w.c. / 35 mbar Setpoint for 2 in. / DN 50 Body Size
SETPOINT ACCURACY SPRING
Droop Boost Set Range Part Number / Color
14 in. w.c. -2 in. w.c. 2 in. w.c. 10 to 16 in. w.c. GE30340X012 / White
35 mbar -5 mbar 5 mbar 25 to 40 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
1 0.07 670 18.0 890 23.9 1150 30.9 1190 31.9 1550 41.6
2 0.14 1070 28.7 1320 35.4 1570 42.1 1910 51.3 2370 63.6
3 0.21 1200 32.2 1770 47.5 2120 56.9 2570 69.0 3020 81.1
5 0.34 1710 45.9 2400 64.4 2950 79.2 3520 94.5 4180 112
10 0.69 2630 70.6 3890 104 4930 132 5750 154 6630 178
15 1.0 3520 94.5 5230 140 6340 170 7760 208 8740 235
20 1.4 4150 111 6680 179 7800 209 9990 268 10,500 282
25 1.7 5030 135 8190 220 9070 244 11,480 308 12,040 323
30 2.1 5960 160 9530 256 10,120 272 12,650 340 13,030 350
40 2.8 7650 205 11,870 319 13,370 359 15,120 406 15,340 412
50 3.4 9530 256 13,960 375 15,240 409 16,830 452 17,960 482
60 4.1 10,750 289 15,310 411 17,930 481 18,320 492
80 5.5 13,860 372 19,100 513
100 6.9 16,370 440 21,650 581
125 8.6 19,090 513
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Bulletin 71.1:CS800
48
Table 57. Types CS805 and CS806 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
1 psig -2.8 in. w.c. 2.8 in. w.c. 14 to 30 in. w.c. GE30341X012 / Dark Green
0.07 bar -7 mbar 7 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
2 0.14 840 22.6 1200 32.2 1310 35.2 1820 48.9 1610 43.2
3 0.21 1100 29.5 1520 40.8 1760 47.2 2430 65.2 2700 72.5
5 0.34 1680 45.1 2280 61.2 2820 75.7 3490 93.7 3710 99.6
10 0.69 2410 64.7 3430 92.1 4480 120 5630 151 6480 174
15 1.0 3080 82.7 4770 128 6910 186 7850 211 8520 229
20 1.4 4080 110 5970 160 8540 229 9100 244 9670 260
25 1.7 4690 126 7400 199 9030 242 9700 260 10,190 274
30 2.1 5790 155 8680 233 10,380 279 10,240 275 10,790 290
40 2.8 7310 196 10,290 276 11,660 313 11,470 308 11,930 320
50 3.4 9270 249 11,010 296 12,140 326 11,740 315 12,550 337
60 4.1 10,320 277 11,200 301 12,490 335 12,220 328
80 5.5 11,810 317 11,610 312
100 6.9 12,180 327 12,030 323
125 8.6 11,730 315
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Table 58. Types CS805 and CS806 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 2 in. / DN 50 Body Size at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
1 psig -2.8 in. w.c. 2.8 in. w.c. 14 to 30 in. w.c. GE30341X012 / Dark Green
0.07 bar -7 mbar 7 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
2 0.14 760 20.4 1330 35.7 1600 43.0 1600 43.0 1880 50.5
3 0.21 1030 27.7 1460 39.2 1810 48.6 2360 63.4 2820 75.7
5 0.34 1640 44.0 2160 58.0 2690 72.2 3340 89.7 3930 106
10 0.69 2570 69.0 3530 94.8 4320 116 5710 153 6550 176
15 1.0 3170 85.1 4740 127 6340 170 7390 198 8950 240
20 1.4 4140 111 5630 151 7800 209 8790 236 10,970 295
25 1.7 4940 133 7110 191 9920 266 10,830 291 12,140 326
30 2.1 5390 145 8180 220 11,560 310 12,680 340 13,260 356
40 2.8 7030 189 11,300 303 13,640 366 15,280 410 16,180 434
50 3.4 9170 246 13,520 363 16,130 433 18,330 492 18,760 504
60 4.1 10,570 284 15,690 421 18,780 504 20,150 541
80 5.5 13,500 362 19,670 528
100 6.9 16,670 448 22,360 600
125 8.6 19,890 534
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Bulletin 71.1:CS800
49
Table 59. Types CS805 and CS806 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 1-1/2 in. / DN 40 Body Size at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
1 psig -5.5 in. w.c. 5.5 in. w.c. 14 to 30 in. w.c. GE30341X012 / Dark Green
0.07 bar -14 mbar 14 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
2 0.14 1120 30.1 1710 45.9 2130 57.2 2600 69.8 2910 78.1
3 0.21 1620 43.5 2320 62.3 2510 67.4 3590 96.4 3750 101
5 0.34 2250 60.4 3090 83.0 3650 98,0 5190 139 5230 140
10 0.69 3150 84.6 4610 124 6320 170 7720 207 8330 224
15 1.0 3990 107 6310 169 8480 228 9390 252 10,000 269
20 1.4 4970 133 7600 204 9950 267 10,710 288 11,480 308
25 1.7 5490 147 8860 238 11,100 298 11,880 319 12,340 331
30 2.1 6590 177 9910 266 12,110 325 12,120 325 13,160 353
40 2.8 7890 212 11,640 313 13,000 349 13,590 365 13,920 374
50 3.4 9350 251 12,680 340 14,120 379 13,940 374 14,440 388
60 4.1 10,860 292 13,000 349 14,540 390 14,080 378
80 5.5 13,310 357 13,780 370
100 6.9 13,750 369 14,360 386
125 8.6 13,750 369
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Table 60. Types CS805 and CS806 Internal Registration Flow Capacities for 1 psig / 0.07 bar Setpoint
for 2 in. / DN 50 Body Size at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
1 psig -5.5 in. w.c. 5.5 in. w.c. 14 to 30 in. w.c. GE30341X012 / Dark Green
0.07 bar -14 mbar 14 mbar 35 to 75 mbar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 2 in. / DN 50
2 0.14 1100 29.5 1590 42.7 2290 61.5 2670 71.7 2630 70.6
3 0.21 1390 37.3 2160 58.0 2970 79.7 3470 93.2 3730 100
5 0.34 2020 54.2 2970 79.7 4270 115 4770 128 5350 144
10 0.69 3230 86.7 4880 131 6870 184 7550 203 8520 229
15 1.0 3990 107 6190 166 8530 229 9470 254 10,990 295
20 1.4 4930 132 7380 198 10,690 287 11,190 300 13,620 366
25 1.7 5650 152 9190 247 12,240 329 12,630 339 14,680 394
30 2.1 6380 171 10,090 271 13,990 376 15,010 403 16,100 432
40 2.8 7830 210 12,900 346 16,080 432 18,220 489 19,340 519
50 3.4 9430 253 15,050 404 18,110 486 21,310 572 22,030 591
60 4.1 10,870 292 17,330 465 21,540 578 22,540 605
80 5.5 13,820 371 21,480 577
100 6.9 16,960 455 24,650 662
125 8.6 20,290 545
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Bulletin 71.1:CS800
50
Table 61. Types CS825 and CS826 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint at 1% ABS Accuracy
SETPOINT ACCURACY: + / - 1% ABS SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.17 psig 0.17 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -12 mbar 12 mbar 0.07 to 0.17 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
3 0.21 690 19.8 1490 42.3 1070 30.5 1440 40.9 1660 47.2
5 0.34 860 24.4 1490 42.3 1840 52.4 2190 62.2 2490 70.5
10 0.69 1880 53.4 2560 72.7 3140 89.1 3980 113 4770 135
15 1.0 2510 71.2 3650 103 4280 121 5810 165 6300 179
20 1.4 3140 89.2 4710 134 5960 169 7950 225 8030 228
25 1.7 3920 111 5730 162 7210 204 8490 241 8880 252
30 2.1 4450 126 6890 195 7970 226 9260 262 10,420 295
40 2.8 6250 177 9020 256 10,170 288 11,090 314 11,770 333
50 3.4 7710 218 10,800 306 12,150 344 12,880 365 13,750 390
60 4.1 9580 271 11,390 323 13,100 371 13,210 374
80 5.5 11,570 328 13,200 374
100 6.9 12,990 368 14,020 397
125 8.6 13,320 377
psig bar Body Size: 2 in. / DN 50
3 0.21 720 20.5 930 26.4 1120 31.8 1410 40.1 1670 47.3
5 0.34 1100 31.1 1530 43.5 1860 52.8 2350 66.8 2720 77.1
10 0.69 1840 52.1 2260 64.1 3590 102 4430 126 5670 161
15 1.0 2560 72.6 3760 107 5520 157 7120 202 8710 247
20 1.4 3290 93.2 4930 140 7500 212 9730 276 11,600 329
25 1.7 4060 115 6520 185 10,010 284 12,580 356 14,370 407
30 2.1 4680 133 8120 230 11,840 335 14,820 420 17,200 487
40 2.8 6730 191 11,580 328 16,140 457 19,140 542 21,940 621
50 3.4 8800 249 14,080 399 19,900 564 23,390 663 26,300 745
60 4.1 10,580 300 16,950 480 24,370 690 26,970 764
80 5.5 13,590 385 22,090 626
100 6.9 16,680 472 27,290 773
125 8.6 20,280 574
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Bulletin 71.1:CS800
51
Table 62. Types CS825 and CS826 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.20 psig 0.20 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -14 mbar 14 mbar 0.07 to 0.17 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
3 0.21 740 19.9 1580 42.4 1230 33.0 1620 43.5 1860 49.9
5 0.34 990 26.6 1720 46.2 2020 54.2 2730 73.3 2870 77.0
10 0.69 2040 54.8 2970 79.7 3490 93.7 4820 129 5290 142
15 1.0 2890 77.6 4170 112 5000 134 6510 175 7010 188
20 1.4 3600 96.6 5350 144 6580 177 8620 231 8690 233
25 1.7 4370 117 6430 173 7950 213 9240 248 9530 256
30 2.1 4960 133 7690 206 9030 242 10,240 275 11,060 297
40 2.8 6800 183 9790 263 11,040 296 11,890 319 12,590 338
50 3.4 8140 219 11,460 308 12,760 343 13,290 357 14,450 388
60 4.1 9850 264 12,100 325 13,760 369 14,020 376
80 5.5 12,110 325 13,830 371
100 6.9 13,720 368 14,800 397
125 8.6 13,880 373
psig bar Body Size: 2 in. / DN 50
3 0.21 810 21.7 1080 29.0 1340 36.0 1560 41.9 1780 47.8
5 0.34 1240 33.3 1760 47.2 2170 58.3 2750 73.8 3170 85.1
10 0.69 2100 56.4 2670 71.7 4130 111 4910 132 6300 169
15 1.0 2900 77.9 4220 113 6230 167 7920 213 9310 250
20 1.4 3640 97.7 5770 155 8400 226 10,470 281 12,460 335
25 1.7 4530 122 7180 193 10,660 286 13,300 357 14,970 402
30 2.1 5190 139 8840 237 12,270 330 15,280 410 17,900 481
40 2.8 7140 192 12,040 323 16,610 446 19,630 527 22,700 609
50 3.4 9020 242 14,530 390 20,410 548 23,830 640 26,840 721
60 4.1 10,720 288 17,070 458 24,980 671 27,450 737
80 5.5 13,660 367 22,220 597
100 6.9 16,760 450 27,350 734
125 8.6 20,350 546
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Bulletin 71.1:CS800
52
Table 63. Types CS825 and CS826 Internal Registration Flow Capacities for 2 psig / 0.14 bar Setpoint at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
2 psig -0.40 psig 0.40 psig 1 to 2.5 psig GE30342X012 / Dark Blue
0.14 bar -28 mbar 28 mbar 0.07 to 0.17 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
3 0.21 1170 31.4 2020 54.2 2150 57.7 2570 69.0 3110 83.5
5 0.34 1770 47.5 2540 68.2 3130 84.0 4100 110 4520 121
10 0.69 3080 82.7 4420 119 5370 144 6800 183 7330 197
15 1.0 3880 104 5600 150 7180 193 8730 234 9850 264
20 1.4 4830 130 6970 187 9130 245 10,390 279 11,410 306
25 1.7 5740 154 8500 228 10,630 285 12,150 326 12,640 339
30 2.1 6180 166 9670 260 11,650 313 13,330 358 14,210 382
40 2.8 7810 210 12,190 327 13,870 372 15,330 412 15,860 426
50 3.4 9250 248 13,800 371 15,660 420 16,330 438 17,440 468
60 4.1 10,570 284 14,780 397 16,310 438 17,480 469
80 5.5 13,170 354 16,800 451
100 6.9 15,740 423 18,200 489
125 8.6 17,430 468
psig bar Body Size: 2 in. / DN 50
3 0.21 1070 28.7 1470 39.5 2080 55.8 2540 68.2 2710 72.8
5 0.34 1760 47.2 2660 71.4 3420 91.8 4130 111 4660 125
10 0.69 2860 76.8 4260 114 5930 159 7190 193 8360 224
15 1.0 3880 104 5950 160 8200 220 9920 266 11,340 304
20 1.4 4740 127 7360 198 10,200 274 12,310 331 14,410 387
25 1.7 5590 150 8830 237 12,560 337 15,100 405 16,980 456
30 2.1 6310 169 10,150 273 14,290 384 17,140 460 19,320 519
40 2.8 7820 210 12,990 349 18,360 493 21,510 577 23,500 631
50 3.4 9370 252 15,320 411 22,350 600 25,450 683 28,260 759
60 4.1 10,860 292 17,710 475 26,420 709 29,670 797
80 5.5 13,750 369 22,830 613
100 6.9 16,800 451 27,610 741
125 8.6 20,510 551
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Bulletin 71.1:CS800
53
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 770 21.9 1030 29.2 1370 39.0 1790 50.8 2010 57.0
15 1.0 1190 33.9 1720 48.9 2140 60.8 2560 72.5 2560 72.5
20 1.4 1500 42.6 1940 55.1 2710 77.0 3100 88.0 3500 99.3
25 1.7 1680 47.6 2350 66.6 3340 94.8 3920 111 4400 125
30 2.1 2160 61.4 2740 77.8 3840 109 4910 139 5040 143
40 2.8 2680 76.0 3860 109 4830 137 6520 185 6560 186
50 3.4 3420 96.9 4650 132 6040 171 7580 215 7980 226
60 4.1 4050 115 5780 164 7400 210 8950 254
80 5.5 5210 148 7660 217
100 6.9 6810 193 8940 253
125 8.6 7410 210
psig bar Body Size: 2 in. / DN 50
10 0.69 920 26.1 1220 34.7 1370 38.9 1730 49.0 1960 55.6
15 1.0 1300 37.1 1750 49.6 2020 57.5 2510 71.1 2930 83.0
20 1.4 1660 47.1 2180 61.7 2700 76.5 3220 91.3 3890 110
25 1.7 1930 54.8 2540 71.9 3140 89.1 4110 117 5490 155
30 2.1 2290 65.1 3060 86.8 3860 110 5270 149 6930 196
40 2.8 2870 81.5 4000 113 5370 152 8050 228 10,840 307
50 3.4 3510 99.6 5460 155 7860 223 10,990 311 14,620 414
60 4.1 4160 118 7250 205 11,130 315 15,400 436
80 5.5 6360 180 11,380 322
100 6.9 9640 273 16,370 464
125 8.6 13,250 375
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Table 64. Types CS825 and CS826 Internal Registration Flow Capacities for 5 psig / 0.34 bar Setpoint at 1% ABS Accuracy
SETPOINT ACCURACY: + / - 1% ABS SPRING
Droop Boost Set Range Part Number / Color
5 psig -0.20 psig 0.20 psig 2.5 to 5.5 psig
GE30343X012 / Yellow
0.34 bar -14 mbar 14 mbar 0.17 to 0.38 bar
Bulletin 71.1:CS800
54
Table 65. Types CS825 and CS826 Internal Registration Flow Capacities for 5 psig / 0.34 bar Setpoint at 10% Accuracy
SETPOINT ACCURACY: + / - 10% GAUGE SPRING
Droop Boost Set Range Part Number / Color
5 psig -0.50 psig 0.50 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -34 mbar 34 mbar 0.17 to 0.38 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 1750 47.0 2360 63.4 2860 76.8 3630 97.4 4290 115
15 1.0 2400 64.4 3530 94.8 4370 117 5400 145 5960 160
20 1.4 3110 83.5 4270 115 5660 152 6630 178 7540 202
25 1.7 3640 97.7 5320 143 6910 186 7870 211 8920 240
30 2.1 4350 117 6240 168 7950 213 9530 256 10,490 282
40 2.8 5490 147 7730 208 9760 262 11,740 315 12,770 343
50 3.4 6850 184 9270 249 11,900 320 13,230 355 14,360 386
60 4.1 7970 214 11,280 303 13,470 362 15,070 405
80 5.5 10,650 286 13,750 369
100 6.9 12,440 334 15,460 415
125 8.6 14,500 389
psig bar Body Size: 2 in. / DN 50
10 0.69 1730 46.4 2400 64.4 2840 76.2 3620 97.2 4060 109
15 1.0 2500 67.1 3410 91.5 4300 115 5360 144 6490 174
20 1.4 3230 86.7 4360 117 5610 151 6950 187 8760 235
25 1.7 3810 102 5280 142 6860 184 8960 241 11,030 296
30 2.1 4410 118 6340 170 8430 226 10,780 289 13,080 351
40 2.8 5550 149 8640 232 11,810 317 15,280 410 17,290 464
50 3.4 6980 187 11,120 299 15,070 405 19,630 527 21,680 582
60 4.1 8750 235 13,630 366 18,300 491 23,260 624
80 5.5 11,970 321 18,590 499
100 6.9 15,030 404 23,560 633
125 8.6 19,350 520
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Table 66. Types CS825 and CS826 Internal Registration Flow Capacities for 5 psig / 0.34 bar Setpoint at 20% Accuracy
SETPOINT ACCURACY: + / - 20% GAUGE SPRING
Droop Boost Set Range Part Number / Color
5 psig -1.0 psig 1.0 psig 2.5 to 5.5 psig GE30343X012 / Yellow
0.34 bar -69 mbar 69 mbar 0.17 to 0.38 bar
CAPACITIES IN SCFH / Nm3/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS
Inlet Pressure
Orice Size, In. / mm
3/8 / 9.5 1/2 / 13 5/8 / 16 3/4 / 19 7/8 / 22
SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h
psig bar Body Size: 1-1/2 in. / DN 40
10 0.69 2460 66.0 3650 98.0 4680 126 5880 158 6610 177
15 1.0 3460 92.9 5200 140 6520 175 8240 221 9120 245
20 1.4 4370 117 6650 179 8300 223 10,120 272 11,110 298
25 1.7 5220 140 7700 207 10,020 269 12,050 324 13,400 360
30 2.1 6060 163 8980 241 11,440 307 13,520 363 15,180 408
40 2.8 7580 204 11,060 297 14,160 380 16,400 440 17,610 473
50 3.4 9150 246 12,850 345 16,250 436 17,880 480 19,590 526
60 4.1 10,490 282 15,370 413 18,130 487 20,170 542
80 5.5 13,270 356 18,410 494
100 6.9 15,310 411 20,820 559
125 8.6 18,730 503
psig bar Body Size: 2 in. / DN 50
10 0.69 2440 65.5 3650 98.0 4660 125 5740 154 6660 179
15 1.0 3540 95.0 5220 140 6790 182 8260 222 9740 262
20 1.4 4480 120 6650 179 8720 234 10,670 286 12,370 332
25 1.7 5260 141 7950 213 10,580 284 13,090 351 15,060 404
30 2.1 6100 164 9370 252 12,540 337 15,440 415 17,410 467
40 2.8 7650 205 11,860 318 16,150 434 19,860 533 22,580 606
50 3.4 9230 248 14,510 390 19,730 530 24,260 651 27,210 731
60 4.1 10,710 288 16,820 452 23,710 637 28,650 769
80 5.5 13,670 367 21,930 589
100 6.9 16,630 446 27,000 725
125 8.6 20,310 545
Blank areas indicate where maximum operating inlet pressure for a given orice size is exceeded.
Bulletin 71.1:CS800
55
D
(STANDARD)
C
F
E
VENT
VENT
VENT
VENT
BODY POSITION TO BE SPECIFIED
BY THE PRIMARY REGULATOR
PRIMARY REGULATOR
TYPICAL TYPE CS800 VIEW
TYPICAL TYPE CS803 VIEW
VENT
VENT
VENT
VENT VENT
VENT
VENT
VENT
VENT
VENT
VENT
D
D
C
C
F
F
E
E
BODY POSITION TO BE SPECIFIED BY THE
PRIMARY REGULATOR
BODY POSITION TO BE SPECIFIED BY THE
PRIMARY REGULATOR
PRIMARY REGULATOR
PRIMARY REGULATOR
SPRING BARREL FOR THE
TYPE TM600 MONITOR
WILL BE ORIENTED IN THE
SAME DIRECTION AS THE
PRIMARY REGULATOR
SPRING BARREL
SPRING BARREL OF
THE TYPE VSX8 SLAM-
SHUT DEVICE SHALL BE
SAME DIRECTION AS THE
PRIMARY REGULATOR
SPRING BARREL
VENT POSITION OF
TYPE TM600 MONITOR
WILL BE ORIENTED IN THE
SAME DIRECTION AS THE
PRIMARY REGULATOR
VENT POSITION OF
TYPE VSX8 SLAM-SHUT
DEVICE SHALL BE THE
SAME DIRECTION AS THE
PRIMARY REGULATOR
Figure 21. Spring Case Vent and Body Orientation
TYPICAL TYPE CS804 VIEW
Bulletin 71.1:CS800
56
Ø 12.99 /
330.0
12.34 /
313.4
2.32 /
59.0 2.28 /
58.0
A/2A/2
A
A
17.14 /
435.4
10.65 /
270.4
3.05 /
77.5
6.12 /
155.4
10.30 /
261.6
2.28 /
58.0
SCREENED VENT
1 OR 2-1/2 NPT
3/4 NPT CONTROL LINE
EXTERNAL REGULATOR ONLY
TYPE CS800 REGULATOR MAIN VALVE
ERSA00347
Figure 22. Dimensions
GG00886_A
POSITION 1
(STANDARD)
POSITION 2 POSITION 3 POSITION 4
Figure 21. Spring Case Vent and Body Orientation (continued)
In. /
mm
Bulletin 71.1:CS800
57
Table 67. Dimensions
BODY SIZE END CONNECTION STYLE DIMENSION A
In. DN In. mm
1-1/4 to 2 - - - - NPT or Rp 6.12 155
2(1) 50(1) CL125 FF Flange 7.5 10 191 254
2(2) 50(2) CL125 FF, CL150 FF or PN 10/16 Flange
2(2) 50(2) CL125 FF or CL150 FF Flange 10.5 267
2(3) 50(3) CL150 RF or PN 16 Flange 10 254
1. For Cast Iron.
2. For Ductile Iron.
3. for Steel.
ERSA00347
Figure 22. Dimensions (continued)
TYPE CS850 REGULATOR MAIN VALVE
SCREENED VENT
1 OR 2-1/2 NPT
SLAM-SHUT MODULE TRUE-MONITOR™ MODULE
Ø 12.99 /
330.0
12.34 /
313.4
17.14 /
435.4
SCREENED VENT
1/4 NPT
7.91 /
201
5.77 /
146.5
A/2
A
11.85 /
301.1
5.95 /
151.2
SCREENED VENT
1 NPT
A/2
A
10.65 /
270.4
3.05 /
77.5
6.12 /
155.4
10.63 /
270.0
14.17 /
360.0
2.28 /
58.0
+25 mm FOR RESET
In. /
mm
Bulletin 71.1:CS800
58
Ordering Information
When ordering, complete the ordering guide on this
page. Refer to the Specications section on
page 2. Review the description to the right of each
With Slam Shut
CS804IN
CS804IT
CS804IL
CS804EN
CS804ET
CS804EL
CS824IN
CS824IT
CS824IL
CS824EN
CS824ET
CS824EL
CS854IN
CS854EN
Body Material, Body Size and End Connection
(Select One)
Gray Cast Iron (Types CS800, CS805, CS806,
CS820, CS825, CS826 and CS850)
1-1/4 NPT***
1-1/2 NPT***
2 NPT***
NPS 2 / DN 50, CL125 FF***
Face-to-face dimension:
7.5 in. / 191 mm
10 in. / 254 mm
Gray Cast Iron (Types CS803, CS823, CS804,
CS824 and CS854)
2 NPT***
Ductile Iron (Types CS800, CS803, CS820,
CS823 and CS850)
1-1/4 NPT***
1-1/2 NPT***
2 NPT***
Rp 1-1/4***
Rp 1-1/2***
Rp 2***
NPS 2 / DN 50, CL125 FF / CL150 FF***
Face-to-face dimension:
7.5 in. / 191 mm
10 in. / 254 mm
10.5 in. / 267 mm
NPS 2 / DN 50, PN 10/16***
Face-to-face dimension:
7.5 in. / 191 mm
10 in. / 254 mm
specication and the information in each referenced
table or gure. Specify your choice whenever a
selection is offered.
Ordering Guide
Type (See Table 1 for Construction Features)
(Select One)
Stand-Alone Regulator
CS800IN
CS800IR
CS800IT
CS800IQ
CS800IL
CS800EN
CS800ET
CS800EL
CS820IN
CS820IR
CS820IT
CS820IQ
CS820IL
CS820EN
CS820ET
CS820EL
CS850IN
CS850EN
With Integral True-Monitor™ Module
CS803IN
CS803IT
CS803IL
CS803EN
CS803ET
CS803EL
CS823IN
CS823IT
CS823IL
CS823EN
CS823ET
CS823EL
With Type Secondary Seat™ Protection
Without Vent
CS805IN
CS805IR
CS805IT
CS805IQ
CS825IN
CS825IR
CS825IT
CS825IQ
With Type Secondary Seat Protection with Vent
CS806IR
CS806IQ
CS826IR
CS826IQ
Bulletin 71.1:CS800
59
1. 10 in. / 254 mm face-to-face dimension
Ordering Guide (continued)
Ductile Iron (Types CS804, CS824 and CS854)
1-1/2 NPT***
2 NPT***
Rp 2***
NPS 2 / DN 50, CL125 FF / CL150 FF***
Face-to-face dimension:
10 in. / 254 mm
10.5 in. / 267 mm
NPS 2 / DN 50, PN 10/16***(1)
WCC Steel (Types CS800, CS803, CS820,
CS823 and CS850)
1-1/4 NPT***
1-1/2 NPT***
2 NPT***
Rp 1-1/4***
Rp 1-1/2***
Rp 2***
NPS 2 / DN 50, CL150 RF***(1)
NPS 2 / DN 50, PN 10/16***(1)
WCC Steel (Types CS804, CS824 and CS854)
1-1/2 NPT***
2 NPT***
Rp 2***
NPS 2 / DN 50, CL150 RF***(1)
NPS 2 / DN 50, PN 10/16***(1)
Outlet Pressure Range
(See Table 4) (Select One)
3.5 to 6 in. w.c. / 9 to 15 mbar, Red
5.5 to 8.5 in. w.c. / 13 to 21 mbar, Black
5.5 to 8.5 in. w.c. / 13 to 21 mbar, Brown
8 to 12 in. w.c. / 20 to 30 mbar, Purple
10 to 16 in. w.c. / 25 to 40 mbar, White
14 to 30 in. w.c. / 35 to 75 mbar, Dark Green
1 to 2.5 psig / 69 to 170 mbar, Dark Blue
1.5 to 3.5 psig / 100 to 241 mbar, Orange
2.5 to 5.5 psig / 170 to 380 mbar, Yellow
5 to 10 psig / 345 to 690 mbar, Green with White Stripe
Orice Size (Select One)
Types CS800, CS804, CS820, CS824, CS850
and CS854
1/4 in. / 6.4 mm
3/8 in. / 9.5 mm
1/2 in. / 13 mm
5/8 in. / 16 mm
3/4 in. / 19 mm
7/8 in. / 22 mm
1 in. / 25 mm
1-3/8 in. / 34.9 mm
Types CS803 and CS823
1/4 in. / 6.4 mm
3/8 in. / 9.5 mm
1/2 in. / 13 mm
5/8 in. / 16 mm
3/4 in. / 19 mm
7/8 in. / 22 mm
1 in. / 25 mm
Types CS805, CS825, CS855, CS806, CS826
and CS856
3/8 in. / 9.5 mm
1/2 in. / 13 mm
5/8 in. / 16 mm
3/4 in. / 19 mm
7/8 in. / 22 mm
Body Orientation (Select one, see Figure 21)
Position 1 (standard)***
Position 2***
Position 3***
Position 4***
Vent Orientation (Select one, see Figure 21)
Position C***
Position D (standard)***
Position E***
Position F***
True-Monitor™ Control Pressure Range
(For CS803 and CS823 Series)
(See Tables 7 and 8, select one if applicable)
12 to 21 in. w.c. / 30 to 52 mbar, Blue
18 to 30 in. w.c. / 45 to 75 mbar, Green
26 to 40 in. w.c. / 65 to 99 mbar, Orange
1.4 to 2.9 psig / 97 to 200 mbar, Black
2.6 to 3.7 psig / 179 to 255 mbar, Purple
3.6 to 6 psig / 248 to 414 mbar, Dark Blue
5.1 to 7.5 psig / 352 to 517 mbar, Red
Slam-Shut Trip Pressure Setting
(For CS804, CS824 and CS854 Series)
(Select one if applicable and specify setpoint/s, see
Tables 12 and 13)
Overpressure Protection Only (OPSO)
Supply setpoint required____________________
Overpressure and Underpressure
Protection (OPSO/UPSO)
Supply overpressure setpoint required
_______________________________________
Supply underpressure setpoint required
_______________________________________
Options (Select all that apply)
Enhanced Low Inlet Pressure Flow Performance
Choose this option for enhanced ow performance
for low inlet pressure systems, up to 25 psig / 1.7 bar.
This option applies to the 5.5 to 8.5 in. w.c. /
13 to 21 mbar spring range when combined with 2 in.
threaded or anged bodies only.
Low Relief Start-to-Discharge (STD) Spring
This option provides a relief start-to-discharge range
of 7 to 14 in. w.c. / 17 to 35 mbar above setpoint for
the Type CS800IR or CS800IQ with a spring range
of up to 10 to 16 in. w.c. / 25 to 40 mbar.
Closing Cap and Setpoint Seal Wire
Bulletin 71.1:CS800
©Emerson Process Management Regulator Technologies, Inc., 2010, 2014; All Rights Reserved
Industrial Regulators
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
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Tel: +86 21 2892 9000
Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Middle East and Africa
Dubai, United Arab Emirates
Tel: +971 4811 8100
Natural Gas Technologies
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Paci c
Singapore 128461, Singapore
Tel: +65 6770 8337
Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Chartres 28008, France
Tel: +33 2 37 33 47 00
Middle East and Africa
Dubai, United Arab Emirates
Tel: +971 4811 8100
TESCOM
Emerson Process Management
Tescom Corporation
USA - Headquarters
Elk River, Minnesota 55330-2445, USA
Tels: +1 763 241 3238
+1 800 447 1250
Europe
Selmsdorf 23923, Germany
Tel: +49 38823 31 287
Asia-Paci c
Shanghai 201206, China
Tel: +86 21 2892 9499
The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls International LLC,
a business of Emerson Process Management.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or
guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or speci cations of such
products at any time without notice.
Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and
maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.
For further information visit www.emersonprocess.com/regulators
The distinctive swirl pattern cast into every actuator
casing uniquely identi es the regulator as part of the
Fisher® brand Commercial Service Regulator family
and assures you of the highest-quality engineering,
performance and support traditionally associated
with Fisher®, Francel™ and Tartarini™ regulators.
Visit www.fishercommercialservice.com to access
interactive applications.
Regulators Quick Order Guide
* * * Readily Available for Shipment
* * Allow Additional Time for Shipment
* Special Order, Constructed from Non-Stocked Parts. Consult
your local Sales Of ce for Availability.
Availability of the product being ordered is determined by the component with the
longest shipping time for the requested construction.
Speci cation Worksheet
Application:
Speci c Use
Line Size
Gas Type and Speci c Gravity
Gas Temperature
Does the Application Require Overpressure Protection?
Yes No If yes, which is preferred:
Relief Valve Monitor Regulator Shutoff Device
Is overpressure protection equipment selection assistance
desired?
Pressure:
Maximum Inlet Pressure (P1max)
Minimum Inlet Pressure (P1min)
Downstream Pressure Setting(s) (P2)
Maximum Flow (Qmax)
Performance Required:
Accuracy Requirements?
Need for Extremely Fast Response?
Other Requirements:
Ordering Guide (continued)
