Emerson Mr95 Series Pressure Reducing Regulators Data Sheet

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Bulletin 71.1:MR95
December 2014

MR95 Series Industrial Pressure Regulators

P1757

TYPE MR95L

P1753

TYPE MR95H

PRESSURE REDUCING REGULATORS

D103742X012

Figure 1. Typical MR95 Series Industrial Pressure Regulators

www.fisherregulators.com

Bulletin 71.1:MR95
Specifications
This section lists the specifications for the MR95 Series regulators. Factory specification such as type, maximum inlet
pressure, maximum temperature, maximum outlet pressure, spring range, orifice size and seat material are stamped on the
nameplate fastened on the regulator at the factory.
Available Constructions
	Type MR95L: Low-pressure regulator for 2 to 30 psig /
0.14 to 2.1 bar outlet pressures
	Type MR95H: High-pressure regulator for 5 to
150 psig / 0.34 to 10.3 bar outlet pressures
	Type MR95HP: High-pressure regulator for 15 to
400 psig / 1.0 to 27.6 bar outlet pressures (soft-seated)
	Type MR95HT: High-pressure/high-temperature
regulator for 15 to 300 psig / 1.0 to 20.7 bar outlet
pressures (metal seat) and up to 650°F / 343°C
	Type MR95LD: Low-pressure differential regulator for
2 to 30 psi / 0.14 to 2.1 bar differential pressures with
handwheel and packing box
	Type MR95HD: High-pressure differential regulator for
5 to 150 psi / 0.34 to 10.3 bar differential pressures with
handwheel and packing box
Body and Orifice Sizes
	1/4 NPT body:
0.284 in. / 7.22 mm orifice
	1/2 in. / DN 15 body:
0.416 in. / 10.56 mm orifice
	
3/4 and 1 in. / DN 20 and 25 bodies:
	
0.631 in. / 16.02 mm orifice
	1-1/2 and 2 in. / DN 40 and 50 bodies
(not available for Types MR95L and MR95LD):
1.142 in. / 29 mm orifice
End Connection Styles
	NPT, SWE and Welded and Integral CL150 RF,
CL300 RF, CL600 RF and PN 16/25/40 RF;
all sizes are fabricated with slip-on flanges (for welded
end connections) and are 14 in. face-to-face
(EN flanged-356 mm face-to-face)
	
See Tables 1 and 2
Maximum Cold Working Pressures of Body Size
and Material(1)
	
See Table 4
Outlet or Differential Pressure Ranges(1)
	
See Table 3
Maximum Temperature Ranges of Diaphragm and
Seat Materials(1)(2)
MATERIAL

TEMPERATURE RANGE

Nitrile (NBR)
Neoprene (CR)
Fluorocarbon (FKM)(3)
Ethylenepropylene (EPDM)
Perfluoroelastomer (FFKM)
Polytetrafluoroethylene (PTFE)
Stainless steel (SST)

-40 to 180°F / -40 to 82°C
-40 to 180°F / -40 to 82°C
0 to 300°F / -18 to 149°C
20 to 275°F / -7 to 135°C
0 to 425°F / -18 to 218°C
-40 to 400°F / -40 to 204°C
-40 to 650°F / -40 to 343°C

Maximum Temperature Ranges of
Body Materials(1)(2)
BODY AND
SPRING CASE MATERIALS

TEMPERATURE RANGE

Gray Cast Iron
WCC steel(4)
LCC steel(4)
Stainless steel(4)
Monel®
Hastelloy® C
Aluminum-Bronze

-20 to 406°F / -29 to 208°C
-20 to 650°F / -29 to 343°C
-40 to 650°F / -40 to 343°C
-40 to 550°F / -40 to 288°C
-40 to 550°F / -40 to 288°C
-40 to 550°F / -40 to 288°C
-40 to 500°F / -40 to 260°C

Spring Case Construction
	
Drilled Untapped Hole:
Standard for Types MR95L, MR95H, MR95HP
and MR95HT
	
1/4 NPT Vent:
Standard for Types MR95LD and MR95HD
Optional for Types MR95L, MR95H, MR95HP
and MR95HT
Pressure Setting Adjustment
	
Adjusting screw:
Standard for Types MR95L, MR95H, MR95HP
and MR95HT only
	
Handwheel:
Standard for Types MR95LD and MR95HD
Optional for 1/2 in. / DN 15 body size of
Types MR95L, MR95H, MR95HP and MR95HT
	
Tee handle:
Optional for other body sizes (except 1/2 in. /
DN 15) of Types MR95L, MR95H, MR95HP
and MR95HT
Pressure Registration
	
Internal or External
Typical Regulating Capacities
	
Air: See Tables 10, 11, 12, 13 and 14
	Steam: See Tables 15, 16, 17, 18 and 19
	Water: See Tables 20, 21, 22, 23 and 24
Shutoff Classification Per ANSI/FCI 70-3-2004
	
Metal Seats: Class IV
	
Elastomer Seats: Class VI or better
	
PTFE: Class lV
Flow and Sizing Coefficients
	
See Table 5
Relief Sizing Coefficients for MR95 Series Regulators
with Reduced Flow Orifices
	
See Table 6

1. The pressure/temperature limits in this Bulletin, and any applicable standard or code limitation for this regulator should not be exceeded.
2. Pressures and/or the body end connection may decrease these maximum temperatures.
3. Fluorocarbon (FKM) is limited to 200°F / 93°C hot water.
4. Meets API 614 requirements (with Stainless steel trim).

- continued Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

2

Bulletin 71.1:MR95
Specifications (continued)
Main Valve Construction Materials
	
See Table 8
Trim Materials
	
See Table 7
Product Dimension
	
See Figure 3
Common Services and Material Compatibility
	
See Table 9

Approximate Weights
	
MR95H Series
	
1/4 NPT body: 5 lbs / 2.3 kg
	
1/2 in. / DN 15 body: 10 lbs / 4.5 kg
	
3/4 and 1 in. / DN 20 and 25 bodies:
	
22 lbs / 10 kg
	
1-1/2 and 2 in. / DN 40 and 50 bodies:
	
55 lbs / 25 kg
	
MR95L Series
	
1/4 NPT body: 7 lbs / 3.2 kg
	
1/2 in. / DN 15 body: 15 lbs / 6.8 kg
	
3/4 and 1 in. / DN 20 and 25 bodies:
	
35 lbs / 16 kg

Introduction
The MR95 Series regulators are compact, large-capacity,
direct-operated pressure regulators (see Figure 1). The units
are available in 1/4 NPT through 2 in. / DN 50 sizes and are
offered in several different end connection configurations.
They are designed to handle pressures up to 1000 psig /
68.9 bar and temperatures up to 650°F / 343°C.
These products can help solve the toughest pressure control
applications. Typical applications include superheated steam,
steam injection, steam tracing, nitrogen purging, boiler feed
water, process chemicals, cooling water, test fixtures, wash
tanks, sterilizers/autoclaves, fuel lines, pneumatic supply and
many others.

Features
•	 Handwheels/Tee Handles—Allow easy pressure
setting changes and are standard on Types MR95LD
and MR95HD, and optional on the Types MR95L,
MR95H, MR95HP and MR95HT regulators.
•	 Versatile—Can be used with all process media
including air, steam, gas, water, liquids (oils and
process chemicals) and oxygen.
•	 Tight Shutoff With Elastomer Seats—Metal seats
available for high temperatures.
•	 Direct-Operated—Design maximizes speed
of response.
•	 Robust—Up to 1000 psig / 68.9 bar inlet pressure.
•	 P1 = P2—Inlet equals outlet rating in Types MR95H and
MR95HD up to 300 psig / 20.7 bar.
•	 Rugged Construction—Available in a variety of body
and spring case materials to address the toughest service
conditions. Severe service elastomers and corrosion
resistant trims are also available and provide excellent
fluid compatibility.

•	 Differential Pressure Capability—Spring-loaded
Polytetrafluoroethylene (PTFE) packing and
tapped connections permit pressure loading of the
Types MR95LD and MR95HD spring cases.
•	 Special Service Capabilities—Optional materials
are available for applications handling sour gases,
cryogenics and superheated steam.
•	 Large Turndown Ratio—No need for low Cv trims at
low flows.
•	 Graphite Gaskets—For high temperature applications
up to 650°F / 343°C (optional).
•	 Set Pressures up to 400 psig / 27.6 bar
•	 Multiple End Connection Options—To match
your application.
•	 Easy Maintenance—Seating parts are easily accessible
by removing the plug on the bottom of the regulator.
•	 API 614 Compliant—Steel and Stainless steel
constructions meet API 614 requirements.

Principle of Operation
The MR95 Series (refer to Figure 2) is a direct-operated
regulator. Downstream pressure is registered internally
or externally through a control line to the under side of
the diaphragm. When the downstream pressure is at or
above the set pressure, the disk is held against the orifice,
restricting fluid flow through the regulator. When demand
increases, downstream pressure drops slightly allowing the
spring to extend, moving the stem down and the disk away
from the orifice. This allows fluid flow through the body to
the downstream system. Types MR95H, MR95L, MR95HP
and MR95HT use spring force to regulate outlet pressure.
Types MR95HD and MR95LD use spring force to maintain
a differential pressure between spring case loading
pressure and outlet pressure.

3

Bulletin 71.1:MR95
ADJUSTING SCREW

CONTROL SPRING

DIAPHRAGM
PITOT TUBE
STEM
ORIFICE

VALVE PLUG

FRONT AND INTERNAL VIEW OF
TYPE MR95H WITH INTERNAL
PRESSURE REGISTRATION

CONTROL LINE TAP

BACK VIEW OF
1/2 IN. / DN 15 TYPE MR95H
WITH EXTERNAL
PRESSURE REGISTRATION
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE

Figure 2. MR95 Series Operational Schematics

4

SIDE AND INTERNAL VIEW OF
3/4 TO 2 IN. / DN 20 TO 50
TYPE MR95H WITH EXTERNAL
PRESSURE REGISTRATION
(ALSO TYPICAL OF TYPE MR95L,
1/2 TO 2 IN. / DN 15 TO 50 BODIES)

Bulletin 71.1:MR95
Handwheel

PRESSURE A*
(SPRING CASE
LOADING
PRESSURE)

Control spring

DIAPHRAGM
October
2006

Type 95HD

PRESSURE A +
SPRING SETTING =
PRESSURE B

PITOT TUBE

Type 95HD Differential Pressure Reducing Regulator
STEM

PRESSURE B
(OUTLET
PRESSURE)

ORIFICE

CONTROL LINE TAP

VALVE PLUG

SPRING

METAL DIAPHRAGMS

BACK VIEW OF
TYPE MR95HD WITH EXTERNAL PRESSURE REGISTRATION

SPRING

GASKET

GASKET

TYPE MR95H WITH 2 METAL DIAPHRAGMS (ALSO TYPICAL OF
TYPES MR95HT AND MR95L EXCEPT FOR TYPE MR95L WITH 1/4 NPT
BODY SIZE, 2 to 6 psi / 0.14 to 0.41 bar RANGE)

METAL DIAPHRAGM

TYPE MR95L (1/4 NPT, 2 to 6 psi / 0.14 to 0.41 bar RANGE)
WITH METAL DIAPHRAGM

M1006

FRONT AND INTERNAL VIEW OF
TYPE MR95HD WITH INTERNAL PRESSURE REGISTRATION

Inlet pressure
Outlet pressure
Loading pressure
*Pressure A may be supplied by another pressure system or a manual loading regulator.

Figure 2. MR95 Series Operational Schematics (continued)

5

Bulletin 71.1:MR95
Table 1. Types MR95L and MR95LD Regulators Body Constructions

Without Control Line and Gauge Port

NPT
NPT
SWE

Without Control Line and Gauge Port

Welded CL150 RF
Welded CL300 RF

1/2 in. / DN 15

Welded PN 16/25/40 RF
NPT
With Control Line but Without Gauge Port

Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
NPT
SWE

Without Control Line and Gauge Port

Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
NPT

3/4 in. / DN 20

With Control Line but Without Gauge Port

Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
NPT

With Gauge Port but Without Control Line

Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
NPT
SWE

Without Control Line and Gauge Port

Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
NPT

1 in. / DN 25

With Control Line but Without Gauge Port

Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
NPT

With Gauge Port but Without Control Line

Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF

- Shaded areas indicate that the construction is available.
- Blank areas indicate that you need to contact your local Sales Office for the availability of the constructions.

Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

6

Monel® or Hastelloy® C

1/4 NPT

CF3M Stainless Steel

End Connection

LCC or WCC Steel

Body Construction

CF8M Stainless Steel

Body Size

Gray Cast Iron

Body Material

Bulletin 71.1:MR95
Table 2. Types MR95H, MR95HD, MR95HT and MR95HP Regulators Body Constructions

NPT

Aluminum-Bronze

Without Gauge Port and Control Line

Monel® or Hastelloy® C

1/4 NPT

CF3M Stainless Steel

End Connection

CF8M Stainless Steel

Body
Construction

LCC or WCC Steel

Body Size

Gray Cast Iron(1)

Body Material

NPT
SWE
Welded CL150 RF
Welded CL300 RF
Without Control Line and Gauge Port

Welded CL600 RF
Welded PN 16/25/40 RF
Integral CL150 RF
Integral CL300 RF

1/2 in. / DN 15

Integral CL600 RF
Integral PN 16/25/40 RF
NPT
Welded CL150 RF
With Control Line but Without Gauge Port

Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/60 RF
NPT
SWE
Welded CL150 RF

Without Gauge Port and Control Line

Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/40 RF
NPT

3/4 in. / DN 20

Welded CL150 RF

With Control Line but Without Gauge Port

Welded CL300 RF
Welded PN 16/25/60 RF
NPT
Welded CL150 RF

With Gauge Port but Without Control Line

Welded CL300 RF
Welded PN 16/25/60 RF
NPT
SWE
Welded CL150 RF
Welded CL300 RF

1 in. / DN 25

Without Gauge Port and Control Line

Welded CL600 RF
Welded PN 16/25/40 RF
Integral CL150 RF
Integral CL300 RF
Integral CL600 RF
Integral PN 16/25/40 RF

- Shaded areas indicate that the construction is available.
- Blank areas indicate that you need to contact your local Sales Office for the availability of the constructions.
1. Gray cast iron body material is available for Types MR95H and MR95HD only.

- continued Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

7

Bulletin 71.1:MR95
Table 2. Types MR95H, MR95HD, MR95HT and MR95HP Regulators Body Constructions (continued)

NPT
Welded CL150 RF

With Control Line but Without Gauge Port

Welded CL300 RF
Welded PN 16/25/40 RF

1 in. / DN 25

NPT
Welded CL150 RF

With Gauge Port but Without Control Line

Welded CL300 RF
Welded PN 16/25/40 RF
NPT
SWE
Welded CL150 RF

Without Gauge Port and Control Line

Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/40 RF
NPT

1-1/2 in. / DN 40

Welded CL150 RF

With Control line but Without Gauge Port

Welded CL300 RF
Welded PN 16/25/40 RF
NPT
Welded CL150 RF

With Gauge Port but Without Control Line

Welded CL300 RF
Welded PN 16/25/40 RF
NPT
SWE
Welded CL150 RF
Welded CL300 RF

Without Gauge Port and Control Line

Welded CL600 RF
Welded PN 16/25/40 RF
Integral CL150 RF
Integral CL300 RF
Integral CL600 RF

2 in. / DN 50

Integral PN 16/25/40 RF
NPT
Welded CL150 RF

With Control Line but Without Gauge Port

Welded CL300 RF
Welded PN 16/25/40 RF
NPT
Welded CL150 RF

With Gauge Port but Without Control Line

Welded CL300 RF
Welded PN 16/25/40 RF

- Shaded areas indicate that the construction is available.
- Blank areas indicate that you need to contact your local Sales Office for the availability of the constructions.
1. Gray cast iron body material is available for Types MR95H and MR95HD only.

Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

8

Aluminum-Bronze

Monel® or Hastelloy® C

CF3M Stainless Steel

CF8M Stainless Steel

End Connection

LCC or WCC Steel

Body
Construction

Body Size

Gray Cast Iron(1)

Body Material

Bulletin 71.1:MR95
Table 3. Body Sizes, Pressure Ranges and Spring Information
TYPE

BODY SIZE

Zinc-plated steel

1E392527022

Yellow

Zinc-plated steel

ERAA01888A0

Green

2 to 6

0.14 to 0.41

0.148

3.76

2.00

50.8

----

5 to 15

0.34 to 1.0

0.170

4.32

2.00

50.8

13 to 30

0.90 to 2.1

0.207

5.26

1.94

49.2

Powder-coated steel

ERAA01889A0

Red

2 to 6

0.14 to 0.41

0.207

5.26

2.50

63.5

Powder-coated steel

ERCA04288A0

Yellow
Green

1/4

1/2

3/4
and 1

3/4
and 1

1-1/2
and 2

1/4

20
and 25

----

15

20
and 25

20
and 25

40
and 50

----

mm

SPRING
COLOR

1/4

20
and 25

In.

SPRING PART
NUMBER

bar

3/4
and 1

mm

SPRING
MATERIAL(2)

psi/psig

15

In.

SPRING FREE
LENGTH

DN

3/4
and 1

MR95H
and
MR95HD

SPRING WIRE
DIAMETER

In.

1/2
MR95L
and
MR95LD

OUTLET OR DIFFERENTIAL
PRESSURE RANGE(1)

5 to 15

0.34 to 1.0

0.234

5.94

2.60

65.9

Powder-coated steel

ERAA01910A0

13 to 30

0.90 to 2.1

0.283

7.19

2.44

62.0

Powder-coated steel

ERAA01911A0

Red

2 to 6

0.14 to 0.41

0.306

7.77

4.00

102

Powder-coated steel

1E398927022

Yellow
Green

5 to 15

0.34 to 1.0

0.343

8.71

4.00

102

Powder-coated steel

1E399027142

13 to 30

0.90 to 2.1

0.406

10.31

4.00

102

Powder-coated steel

1E399127162

Red

2 to 6

0.14 to 0.41

0.306

7.77

4.00

102

Powder-coated Stainless steel

1E3989X0052

Yellow

5 to 15

0.34 to 1.0

0.375

9.53

3.88

98.6

Stainless steel

1K762537022

Unpainted

13 to 30

0.90 to 2.1

0.437

11.1

4.00

102

Stainless steel

11A8269X012

Unpainted

15 to 30

1.0 to 2.1

0.148

3.76

2.00

50.8

Zinc-plated steel

1E392527022

Yellow

25 to 75

1.7 to 5.2

0.170

4.32

2.00

50.8

Zinc-plated steel

ERAA01888A0

Green

70 to 150

4.8 to 10.3

0.207

5.26

1.94

49.2

Powder-coated steel

ERAA01889A0

Red

15 to 30

1.0 to 2.1

0.207

5.26

2.50

63.5

Powder-coated steel

ERCA04288A0

Yellow

25 to 75

1.7 to 5.2

0.234

5.94

2.60

65.9

Powder-coated steel

ERAA01910A0

Green

70 to 150

4.8 to 10.3

0.283

7.19

2.44

62.0

Powder-coated steel

ERAA01911A0

Red

15 to 30

1.0 to 2.1

0.306

7.77

4.00

102

Powder-coated steel

1E398927022

Yellow

25 to 75

1.7 to 5.2

0.343

8.71

4.00

102

Powder-coated steel

1E399027142

Green

70 to 150

4.8 to 10.3

0.406

10.31

4.00

102

Powder-coated steel

1E399127162

Red

15 to 30

1.0 to 2.1

0.306

7.77

4.00

102

Powder-coated Stainless steel

1E3989X0052

Yellow

25 to 75

1.7 to 5.2

0.375

9.53

3.88

98.6

Stainless steel

1K762537022

Unpainted

70 to 150

4.8 to 10.3

0.437

11.1

4.00

102

Stainless steel

11A8269X012

Unpainted

5 to 80

0.34 to 5.5

0.500

12.7

6.50

165

Powder-coated steel

ERCA04290A0

Black with
Light Blue Stripe

60 to 120

4.1 to 8.3

0.562

14.3

6.56

167

Powder-coated steel

ERAA01893A0

Light Gray

100 to 140

6.9 to 9.7

0.594

15.1

6.56

167

Enamel-coated steel

ERAA01894A0

Yellow

120 to 150

8.3 to 10.3

0.625

15.9

6.57

167

Powder-coated steel

1P7888X0022

Black

15 to 100

1.0 to 6.9

0.192

4.88

2.00

50.8

Inconel®

ERCA04292A0

Unpainted

80 to 300

5.5 to 20.7

0.281

7.14

2.00

50.8

Inconel®

ERCA04291A0

Unpainted

15 to 100

1.0 to 6.9

0.281

7.14

2.50

63.5

Inconel®

ERCA04294A0

Unpainted

ERCA04293A0

Unpainted

1/2

15

80 to 300

5.5 to 20.7

0.375

9.53

2.60

66.0

Inconel®

3/4
and 1

20
and 25

15 to 100

1.0 to 6.9

0.437

11.1

4.08

104

17-4 PH Stainless steel

ERCA04295A0

Unpainted

80 to 300

5.5 to 20.7

0.562

14.3

4.08

104

17-4 PH Stainless steel

ERCA04296A0

Unpainted

1-1/2
and 2

40
and 50

15 to 100

1.0 to 6.9

0.625

15.9

6.70

170

17-4 PH Stainless steel

ERCA04297A0

Unpainted

60 to 260

4.1 to 17.9

0.812

20.6

6.70

170

17-4 PH Stainless steel

ERCA04298A0

Unpainted

1/4

----

MR95HT

1/2

15

MR95HP

15 to 100

1.0 to 6.9

0.192

4.88

2.00

50.8

Inconel®

ERCA04292A0

Unpainted

80 to 400

5.5 to 27.6

0.281

7.14

2.00

50.8

Inconel®

ERCA04291A0

Unpainted

15 to 100

1.0 to 6.9

0.281

7.14

2.50

63.5

Inconel®

ERCA04294A0

Unpainted

80 to 400

5.5 to 27.6

0.375

9.53

2.60

66.0

Inconel®

ERCA04293A0

Unpainted

1.0 to 6.9

0.437

11.1

4.08

104

17-4 PH Stainless steel

ERCA04295A0

Unpainted

3/4
and 1

20
and 25

15 to 100
80 to 400

5.5 to 27.6

0.562

14.3

4.08

104

17-4 PH Stainless steel

ERCA04296A0

Unpainted

1-1/2
and 2

40
and 50

15 to 100

1.0 to 6.9

0.625

15.9

6.70

170

17-4 PH Stainless steel

ERCA04297A0

Unpainted

60 to 300

4.1 to 20.7

0.812

20.6

6.70

170

17-4 PH Stainless steel

ERCA04298A0

Unpainted

1. For Types MR95LD and MR95HD regulators, the pressure ranges indicate the differential pressure that can be obtained with the indicated spring. The differential pressure
(spring setting) is added to the spring case loading pressure to determine the actual outlet pressure.
2. Springs meet NACE MR0175-2002 and NACE MR0103 requirements only for applications in which the spring is not exposed to the sour gas.

Inconel® is a mark owned by Special Metals Corporation.

9

Bulletin 71.1:MR95
Table 4. Maximum Cold Working Pressures of Body Size and Material(1)(2)
Maximum spring case
Maximum Outlet Pressure
Pressure
psig
bar
psig
bar
psig
bar
Gray Cast Iron
250
17.2
50
3.4
50
3.4
WCC Steel
300
20.7
125
8.6
125
8.6
LCC Steel
300
20.7
125
8.6
125
8.6
MR95L and MR95LD
All available sizes(3)
CF8M Stainless steel
300
20.7
125
8.6
125
8.6
CF3M Stainless steel
300
20.7
125
8.6
125
8.6
Monel®(4)
300
20.7
125
8.6
125
8.6
Hastelloy® C(4)
300
20.7
125
8.6
125
8.6
Gray Cast Iron
250
17.2
250
17.2
250
17.2
WCC Steel
300
20.7
300
20.7
300
20.7
LCC Steel
300
20.7
300
20.7
300
20.7
CF8M Stainless steel
300
20.7
300
20.7
300
20.7
MR95H and
All available sizes(3)
MR95HD
CF3M Stainless steel
300
20.7
300
20.7
300
20.7
Monel®(4)
300
20.7
300
20.7
300
20.7
Hastelloy® C(4)
300
20.7
300
20.7
300
20.7
Aluminum-Bronze(4)
300
20.7
300
20.7
300
20.7
WCC Steel
1000
68.9
600
41.4
300
20.7
LCC Steel
1000
68.9
600
41.4
300
20.7
CF8M Stainless steel
1000
68.9
550
37.9
300
20.7
MR95HP
All available sizes(3)
CF3M Stainless steel
1000
68.9
550
37.9
300
20.7
Monel®(4)
1000
68.9
550
37.9
300
20.7
Hastelloy® C(4)
1000
68.9
550
37.9
300
20.7
Aluminum-Bronze(4)
1000
68.9
550
37.9
300
20.7
WCC Steel
600
41.4
600
41.4
300
20.7
LCC Steel
600
41.4
600
41.4
300
20.7
CF8M Stainless steel
600
41.4
550
37.9
300
20.7
1/4 NPT and
1/2 to 1 in. /
CF3M Stainless steel
600
41.4
550
37.9
300
20.7
DN 15 to 25
Monel®(4)
600
41.4
550
37.9
300
20.7
Hastelloy® C(4)
600
41.4
550
37.9
300
20.7
Aluminum-Bronze(4)
600
41.4
550
37.9
300
20.7
MR95HT
WCC Steel
600
41.4
450
31.0
300
20.7
LCC Steel
600
41.4
450
31.0
300
20.7
CF8M Stainless steel
600
41.4
450
31.0
300
20.7
1-1/2 and 2 in. /
CF3M Stainless steel
600
41.4
450
31.0
300
20.7
DN 40 and 50
Monel®
600
41.4
450
31.0
300
20.7
Hastelloy® C
600
41.4
450
31.0
300
20.7
Aluminum-Bronze
600
41.4
450
31.0
300
20.7
1. The pressure/temperature limits in this Bulletin and any applicable standard or code limitation should not be exceeded.
2. The pressure limits given are based on the body size and body materials only. Actual pressure limits of the assembled regulator may decrease and vary depending on the temperature,
body end connection, diaphragm, seat and/or trim material of the regulator.
3. See Tables 1 and 2 for all available body sizes.
4. Not available for 1/4 NPT body size.
TYPE

Body Size

Body material

Maximum Inlet Pressure

Table 5. Flow and Sizing Coefficients for all MR95 Series Regulators
WIDE-OPEN COEFFICIENTS
(FOR RELIEF SIZING)

Body size
In.

DN

Cv

Cg

Cs

1/4

----

1.1

37

1.85

C1

Km

33.6

0.74

IEC SIZING COEFFICIENTS
XT

FD

FL

0.715

0.62

0.86

1/2

15

2.9

103

5.15

35.5

0.79

0.797

0.70

0.89

3/4 and 1

20 and 25

6.0

221

11.05

36.8

0.88

0.857

0.68

0.94

1-1/2 and 2

40 and 50

18.1

700

35.00

38.7

0.88

0.945

0.65

0.94

Km = FL2

Table 6. Relief Sizing Coefficients for MR95 Series Regulators with Reduced Flow Orifices(1)
BODY SIZE

WIDE-OPEN COEFFICIENTS FOR
MR95 Series REDUCED FLOW OPTION

WIDE-OPEN COEFFICIENTS FOR
LEGACY 95 Series

In.

DN

Cg

Cg

1/4

----

28

28

1/2

15

70

67

3/4 and 1

20 and 25

156

156

1-1/2 and 2

40 and 50

482

475

1. The reduced flow orifice option offers similar flow capacity as the equivalent 95 series configuration.

Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

10

Bulletin 71.1:MR95
Table 7. MR95 Series Trim Materials
Type

TRIM
NUMBER

SEAT

Orifice /
VALVE PLUG

VALVE plug guide

Stem /
stem guide

Valve spring

1

416 Stainless steel

416 Stainless steel

Brass(3)

416 Stainless steel

302 Stainless steel

2

416 Stainless steel

416 Stainless steel

416 Stainless steel

416 Stainless steel

302 Stainless steel

3

316 Stainless steel

316 Stainless steel

316 Stainless steel

316 Stainless steel

302 Stainless steel

4

Alloy 6(1)

Alloy 6(1)

316 Stainless steel

316 Stainless steel

302 Stainless steel
Inconel®

MR95L,
MR95LD,
MR95H
and
MR95HD

MR95HT

MR95HP

5

Hastelloy® C

Hastelloy® C

Hastelloy® C

Hastelloy® C

6

Monel®

Monel®

Monel®

Monel®

Inconel®

7

Nitrile (NBR)

Brass(2)

Brass(3)

416 Stainless steel

302 Stainless steel

8

Nitrile (NBR)

Brass(2)

416 Stainless steel

416 Stainless steel

302 Stainless steel

9

Nitrile (NBR)

316 Stainless steel

316 Stainless steel

316 Stainless steel

302 Stainless steel

10

Nitrile (NBR)

416 Stainless steel

416 Stainless steel

416 Stainless steel

302 Stainless steel

11

Nitrile (NBR)

416 Stainless steel

Brass(3)

416 Stainless steel

302 Stainless steel

12

Fluorocarbon (FKM)

Brass(2)

Brass(3)

416 Stainless steel

302 Stainless steel

13

Fluorocarbon (FKM)

316 Stainless steel

316 Stainless steel

316 Stainless steel

302 Stainless steel

14

Fluorocarbon (FKM)

416 Stainless steel

416 Stainless steel

416 Stainless steel

302 Stainless steel

15

Fluorocarbon (FKM)

Monel®

Monel®

Monel®

Inconel®

16

Perfluoroelastomer (FFKM)

316 Stainless steel

316 Stainless steel

316 Stainless steel

302 Stainless steel

17

Polytetrafluoroethylene (PTFE)

Brass(2)

Brass(3)

416 Stainless steel

302 Stainless steel

18

Polytetrafluoroethylene (PTFE)

316 Stainless steel

316 Stainless steel

316 Stainless steel

302 Stainless steel

19

Polytetrafluoroethylene (PTFE)

416 Stainless steel

416 Stainless steel

416 Stainless steel

302 Stainless steel

20

Ethylenepropylene (EPDM)

416 Stainless steel

416 Stainless steel

416 Stainless steel

302 Stainless steel

22

416 Stainless steel

416 Stainless steel

416 Stainless steel

416 Stainless steel

Inconel®

23

316 Stainless steel

316 Stainless steel

316 Stainless steel

316 Stainless steel

Inconel®

24

Alloy 6(1)

Alloy 6(1)

316 Stainless steel

316 Stainless steel

Inconel®

10

Nitrile (NBR)

416 Stainless steel

416 Stainless steel

416 Stainless steel

302 Stainless steel

14

Fluorocarbon (FKM)

416 Stainless steel

416 Stainless steel

416 Stainless steel

302 Stainless steel

1. Alloy 6 is not available for 1/4 NPT body.
2. 1/4 NPT has brass orifice and 316 Stainless steel valve plug.
3. 1-1/2 and 2 in. / DN 40 and 50 bodies have 416 Stainless steel valve plug guide.

Table 8. MR95 Series Construction Materials
MAIN VALVE MATERIAL
Body

Spring Case

Gray Cast Iron
LCC/WCC Steel
CF8M/CF3M Stainless steel
Hastelloy® C
Monel®
Aluminum-Bronze

Regulator Spring

Iron(1)

Gray Cast
LCC/WCC Steel
CF8M Stainless steel
Hastelloy® C
Monel®

Steel (standard)
Inconel®
302 Stainless steel
17-4 PH Stainless steel

1. Gray cast iron spring case is not available for Types MR95LD and MR95HD.

TRIM MATERIAL
Elastomer Seat
Part Name

Standard

Optional

Diaphragm

Neoprene (CR)

302 Stainless steel(1), Fluorocarbon (FKM)(2), Ethylenepropylene (EPDM)(2), Monel®(1), Hastelloy® C(1) or
PTFE protector available with Neoprene (CR) and Fluorocarbon (FKM)(2) diaphragm

Disk

Nitrile (NBR)

Fluorocarbon (FKM), Polytetrafluoroethylene (PTFE), Ethylenepropylene (EPDM) or Perfluoroelastomer (FFKM)

Disk Holder

Brass or 416 Stainless steel

316 Stainless steel, Monel® or Hastelloy® C

Valve Plug Guide

Brass or 416 Stainless steel

316 Stainless steel, Monel® or Hastelloy® C

Orifice

Brass or 416 Stainless steel

316 Stainless steel, Monel® or Hastelloy® C

Stem Assembly

416 Stainless steel

316 Stainless steel, Monel® or Hastelloy® C
Metal Seat

Diaphragm

302 Stainless steel(1)

Monel®(1), Hastelloy® C(1), Fluorocarbon (FKM)(2), Ethylenepropylene (EPDM)(2) or PTFE protector available with
Neoprene (CR) and Fluorocarbon (FKM)(2) diaphragm
316 Stainless steel, Monel®, Hastelloy® C or Alloy 6

Valve Plug

416 Stainless steel

Valve Plug Guide

Brass or 416 Stainless steel

316 Stainless steel, Monel® or Hastelloy® C

Orifice

416 Stainless steel

316 Stainless steel, Monel®, Hastelloy® C or Alloy 6

Stem Assembly

416 Stainless steel

316 Stainless steel, Monel® or Hastelloy® C

Gasket

Composition

Graphite

1. Two Diaphragms are used for metal diaphragm except Types MR95L and MR95LD 1/4 NPT Body, range 2 to 6 psig / 0.14 to 0.41 bar.
2. Two Diaphragms are used.

Inconel® is a mark owned by Special Metals Corporation.
Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

11

Bulletin 71.1:MR95
Table 9. Chemical Compatibility
CORROSION INFORMATION

B
B
A
A
A

A
A
A
A
A

Hydrochloric Acid (Air free)
Hydrogen
Hydrogen Peroxide
Hydrogen Sulfide, Liquid
Magnesium Hydroxide

Aluminum Sulfate
Ammonia
Ammonium Chloride
Ammonium Nitrate
Ammonium Sulfate

C
A
C
A
C

C
A
C
C
C

A
A
B
A
B

A
A
B
A
A

C
A
C
C
C

B
A
B
C
A

A
A
A
A
A

Ammonium Sulfite
Beer
Benzene (Benzol)
Benzoic Acid
Boric Acid

C
B
A
C
C

C
B
A
C
C

A
A
A
A
A

A
A
A
A
A

B
B
A
A
B

C
A
A
A
A

Butane
Calcium Chloride (Alkaline)
Carbon Dioxide, Dry
Carbon Dioxide, Wet
Carbon Disulfide

A
B
A
C
A

A
B
A
C
A

A
C
A
A
A

A
B
A
A
A

A
C
A
A
B

Carbon Tetrachloride
Carbonic Acid
Chlorine Gas, Dry
Chlorine Gas, Wet
Chlorine, Liquid

B
C
A
C
C

B
C
A
C
C

B
B
B
C
C

B
B
B
C
C

Chromic Acid
Citric Acid
Coke Oven Gas
Copper Sulfate
Ether

C
I.L.
A
C
B

C
C
A
C
B

C
B
A
B
A

Ethyl Chloride
Ethylene
Ethylene Glycol
Formaldehyde
Formic Acid

C
A
A
B
I.L.

C
A
A
B
C

B
B
A
A
C

B
B
A
A
C

Freon, Wet
Freon, Dry
Gasoline, Refined
Glucose
Hydrochloric Acid (Aerated)

Hastelloy® C

C
C
A
A
A

Monel®

Hastelloy® C

B
A
A
A
A

416
Stainless Steel

Monel®

B
A
A
A
A

316
Stainless Steel

416
Stainless Steel

C
C
A
A
A

302 or 304
Stainless Steel

316
Stainless Steel

C
C
A
A
A

Gray Cast Iron

302 or 304
Stainless Steel

Acetic Acid, Air Free
Acetic Acid Vapors
Acetone
Acetylene
Alcohols

Fluid

Carbon Steel

Gray Cast Iron

Material

Carbon Steel

Material

C
A
I.L.
C
A

C
A
A
C
A

C
A
A
A
A

C
A
A
A
A

C
A
B
C
A

C
A
A
C
A

B
A
B
A
A

Methanol
Methyl Ethyl Ketone
Natural Gas
Nitric Acid
Petroleum Oils, Refined

A
A
A
C
A

A
A
A
C
A

A
A
A
A
A

A
A
A
B
A

A
A
A
C
A

A
A
A
C
A

A
A
A
B
A

A
A
A
A
A

Phosphoric Acid (Air Free)
Phosphoric Acid Vapors
Potassium Chloride
Potassium Hydroxide
Propane

C
C
B
B
A

C
C
B
B
A

A
B
A
A
A

A
B
A
A
A

C
C
C
B
A

B
C
B
A
A

A
I.L.
A
A
A

A
A
A
A
B

A
A
A
A
A

Silver Nitrate
Sodium Acetate
Sodium Carbonate
Sodium Chloride
Sodium Chromate

C
A
A
C
A

C
A
A
C
A

A
B
A
B
A

A
A
A
B
A

B
A
B
B
A

C
A
A
A
A

A
A
A
A
A

C
A
C
C
C

A
A
A
C
C

A
A
A
B
A

Sodium Hydroxide
Stearic Acid
Sulfur
Sulfur Dioxide, Dry
Sulfur Trioxide, Dry

A
A
A
A
A

A
C
A
A
A

A
A
A
A
A

A
A
A
A
A

B
B
A
B
B

A
B
A
A
A

A
A
A
A
A

B
A
A
B
A

C
B
A
A
A

A
B
B
C
A

A
A
A
A
A

Sulfuric Acid (Aerated)
Sulfuric Acid (Air Free)
Sulfurous Acid
Trichloroethylene
Water, Boiler Feed

C
C
C
B
B

C
C
C
B
C

C
C
B
B
A

C
C
B
A
A

C
C
C
B
B

C
B
C
A
A

A
A
A
A
A

A
A
A
A
B

A
A
A
A
B

B
A
A
A
C

A
A
A
A
A

A
A
I.L.
A
A

Water, Distilled
Water, Sea
Zinc Chloride
Zinc Sulfate

A
B
C
C

A
B
C
C

A
B
C
A

A
B
C
A

B
C
C
B

A
A
C
A

A
A
A
A

B
A
A
A
C

A
A
A
A
C

I.L.
I.L.
A
A
C

A
A
A
A
C

A
A
A
A
B

----

----

----

----

----

----

----

Fluid

----

FLUID INFORMATION
Fluid
Acetic Acid (30%)
Acetone
Alcohol, Ethyl
Alcohol, Methyl
Ammonia, Anhydrous
Ammonia, Gas, (Hot)
Benzene
Brine (Calcium Chloride)
Butadiene Gas
Butane, Gas
Butane, Liquid
Carbon Tetrachloride
Chlorine, Dry
Chlorine, Wet
Coke Oven Gas
Ethyl Acetate
Ethylene Glycol
Freon 11
Freon 12

Neoprene
(CR)

Nitrile
(NBR)

c
b
A
A+
A
B
C
A
B
A
B
C
C
C
C
C
A
B
A+

B
C
A
A
C
C
C
A
C
A+
A
C
C
C
B
C
A
A
A

A+—Best possible selection
A—Recommended
B—Minor to moderate effect. Proceed with caution.
C—Unsatisfactory
I.L.—Information lacking

Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

12

Fluorocarbon
EPDM
(FKM)
B
C
B
C
C
C
A
B
B
A
A
A
A
A
A+
C
A
A+
B

A
A
A
A
A
B
C
A
C
C
C
C
C
C
C
B
A
C
B

Fluid
Freon 22
Freon 114
Gasoline
Hydrogen Gas
Hydrogen Sulfide (Dry)
Hydrogen Sulfide (Wet)
Jet Fuel (JP-4)
Natural Gas
Natural Gas + H2S (Sour Gas)
Nitric Acid (10%)
Nitric Acid (50 to 100%)
Nitrogen
Oil (Fuel)
Propane
Sea Water
Sulfur Dioxide
Sulfuric Acid (to 50%)
Sulfuric Acid (50 to 100%)
Water (Ambient)
Water at 200°F / 93°C

Neoprene
(CR)

Nitrile
(NBR)

Fluorocarbon
(FKM)

EPDM

A+
A
B
A
A
B
C
A
A
B
C
A
B
A
B
A
B
C
A
C

C
A
A+
A
C
C
A
A+
B
C
C
A
A+
A
A
C
C
C
A
B

C
B
A
A
C
C
A
A
C
A
A
A
A
A
A
A
A
A
A
B

A
A
C
A
A
A
I.L.
C
C
C
C
A
C
C
A
A
B
B
A
A

Bulletin 71.1:MR95
Installation
The MR95 Series regulators may be installed in any
position, as long as flow will be in the same direction as that
indicated by the body arrow. The Types MR95H, MR95L,
MR95HT and MR95HP regulators should be installed so
that their spring case vents are protected from anything that
might clog them.
Emerson Process Management Regulator Technologies, Inc.
(Emerson™) provides an instruction manual with every regulator
shipped. Refer to this for complete installation, operation and
maintenance instructions. Included is a complete list of individual
parts and recommended spare parts.

Universal NACE Compliance
Optional materials are available for applications handling sour
gases. These constructions comply with the recommendations
of NACE International sour service standards.
The manufacturing processes and materials used by
Emerson assure that all products specified for sour gas
service comply with the chemical, physical and metallurgical
requirements of NACE MR0175 ISO-2002 and/or
NACE MR0103. Optional materials are available to meet
ANSI/NACE MR0175/ISO 15156, please contact your local
Sales Office for special ordering instructions. Customers have
the responsibility to specify correct materials. Environmental
limitations may apply and shall be determined by the user.

Capacity Data
The capacity information on the following pages is based on
three droop factors, 10%, 20% and 40%. Droop is deviation
from the setpoint of the regulator, and is usually stated in
percentage of setpoint value.
For highest capacity and the most accurate control within a
particular type of the MR95 Series regulators, use the lowest
range spring that can be adjusted to the desired setpoint
(see Table 3 for part numbers of appropriate springs for
each body size).
If closer control is necessary, a regulator of larger capacity
or different design should be selected, so that the necessary
flow can be obtained with a smaller droop factor.
Sometimes it may be necessary to interpolate the capacity
table data to determine capacity for outlet settings not given.
To maintain accuracy, it is important when interpolating to
stay within a spring range if possible. The following is a
procedure for interpolating the data to calculate flow:
1.	 Determine which spring is to be used.
2.	 Find the two outlet settings (P2a and P2b) that bracket
the actual outlet pressure P2.

4.	 Use the following formula to determine the interpolated
capacity (Q):
Qb - Qa
P2b - P2a

	

Qb - Q

=

P2b - P2

Example:
P1 = 100 psig / 6.9 bar
1/4 NPT Type MR95H with 15 to 30 psig / 1.0 to 2.1 bar
spring range
P2 = 20 psig / 1.4 bar
Determine air capacity, Q
Solution:
Qa = 1100 SCFH / 28.8 Nm3/h
P2a = 15 psig / 1.0 bar
Qb = 1700 SCFH / 46.5 Nm3/h
P2b = 30 psig / 2.1 bar
1700 - 1100
30 - 15

=

1700 - Q
30 - 20

Q = 1300 SCFH
46.5 - 28.8
2.1 - 1.0

=

46.5 - Q
2.1 - 1.4

Q = 35 Nm3/h
Note
The same interpolation procedure can be
used for different inlet pressures.
Contact your local Sales Office if you should have any
questions about selecting the proper regulator.

Air Capacities
Regulating capacities at selected pressures and outlet
pressure flows are given in SCFH (60°F and 14.7 psia)
of air. To determine the equivalent capacities for other gases,
multiply the table capacities by the following appropriate
conversion factors: 1.29 for 0.6 specific gravity natural gas,
0.808 for propane, 0.707 for butane or 1.018 for nitrogen.
For gases of other specific gravities, divide by the square root
of the appropriate specific gravity.
Then, if capacity is desired in Nm3/h at 0°C and 1.01325 bar,
multiply SCFH by 0.0268.
Capacities in Tables 10, 11, 12, 13 and 14 are for regulators
using elastomer diaphragms. Depending on regulator
construction, a multiplier must be used to convert to capacities
for regulators using metal diaphragms.

3.	 For a given body size and inlet pressure, find the
capacity Qa for P2a and Qb for P2b.

13

Bulletin 71.1:MR95
Table 10. Air Capacities(1)(2) in SCFH / Nm3/h for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Types MR95L and MR95LD
Regulators with Elastomer Diaphragm
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

2 to 6 /
0.14 to 0.41

PRESSURE
Outlet/
Differential
Setting
psig

bar

5

0.34

10

0.69

15

1.0

20

1.4

30

2.1

5 to 15 /
0.34 to 1.0

13 to 30 /
0.90 to 2.1

REGULATOR BODY SIZE, IN. / DN

Inlet

1/4 NPT

1/2 /15

3/4 / 20

1 / 25

Droop

Droop

Droop

Droop

10%

20%

10%

20%

10%

psig

bar

SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH

20
30
50
75
100
150
200
250
20
30
50
75
100
150
200
250
20
30
50
75
100
150
200
250
30
40
50
75
100
150
200
250
40
50
75
100
150
200
250

1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2
1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2
1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2
2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
2.8
3.4
5.2
6.9
10.3
13.8
17.2

740
950
1400
1600
1800
1800
1800
1800
670
950
1500
1800
2100
2200
2400
2400
600
930
1600
2000
2500
2600
2800
2800
710
970
1200
1700
2100
2500
2900
3000
880
1300
1900
2500
3100
3700
3900

19.8
25.4
36.5
43.3
48.3
48.3
48.3
48.3
18.1
25.5
40.4
48.5
56.6
60.3
64
64
16.1
25
42.8
54.9
67
70.6
74.2
76
19
25.9
32.9
44.6
56.3
66.5
76.7
80.5
23.6
35.3
51.8
68.2
83.2
98.1
104

910
1100
1500
1700
1900
2000
2000
2000
930
1200
1700
2000
2300
2300
2400
2400
830
1200
1900
2300
2700
2800
2800
2800
1100
1400
1700
2200
2700
2900
3100
3100
1400
1800
2500
3200
3600
4000
4000

24.5
30.2
41.5
46.9
52.2
53.6
53.6
53.6
24.9
31.6
44.9
53.3
61.7
62.9
64
64
22.3
32
51.4
62
72.7
74.1
75.6
76
29.1
37.5
45.9
59
72
77.5
83.1
82.6
38.6
48.7
67.2
85.6
96.2
107
108

1000
1100
1200
1300
1300
1500
1600
1500
1200
1300
1700
1700
1800
2000
2100
2300
1500
1800
2300
2400
2500
2700
2900
2900
1800
2100
2400
2600
2800
3000
3200
3500
2700
2900
3300
3800
4100
4400
4700

27.2
28.9
32.4
34.1
35.9
39
42.1
41
31.8
36
44.3
46.7
49.1
52.4
55.7
61.2
41.3
47.9
61.1
63.8
66.5
71.6
76.6
78.3
49
56.1
63.2
68.6
74
80.1
86.3
93.1
71
77.7
89.5
101
109
117
125

1500
1600
1700
1800
1800
2000
2100
2100
1900
2000
2400
2500
2700
2900
3000
3200
2200
2500
3000
3300
3500
3800
4100
4100
2900
3200
3600
3800
4000
4400
4700
4800
4200
4500
5000
5500
5900
6300
6600

41.2
42.7
45.5
47.5
49.5
52.6
55.6
56.4
50.6
54.9
63.5
67.7
71.8
76.5
81.1
84.9
59.5
66.7
81.2
87.1
93.1
101
109
110
77.2
86.9
96.6
103
108
117
125
129
113
121
134
147
159
170
176

1200
1400
1800
2300
2700
2400
2100
2000
1700
1900
2500
2800
3200
3500
3700
4300
1600
1900
2600
3000
3500
3900
4300
4700
2000
2200
2300
2900
3500
4000
4500
5000
2400
2700
3400
4000
4900
5900
6600

20%

10%

20%

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

32.8
37.8
47.7
60.5
73.3
65
56.7
52.8
45.2
52.1
66.1
76
85.9
92.6
99.2
116
42.8
51.4
68.7
80.7
92.8
104
115
126
54.3
57.7
61.2
77
92.8
107
122
134
63
73.2
90.2
107
132
157
178

2200
2500
3200
3500
3900
4000
4000
3800
2700
3100
3800
4300
4700
5200
5700
6100
2500
3000
4200
4800
5300
5900
6600
7200
3400
3600
3900
4900
5800
6300
6800
7900
3500
4100
5200
6400
7700
8900
10,000

59.5
67.9
84.7
94.7
105
106
107
102
72.7
82.8
103
115
127
139
152
164
66.3
81.7
112
127
142
159
177
193
90.8
97.8
105
130
156
170
184
212
93.8
110
141
171
205
240
271

2800
3300
4200
4400
4600
4600
4600
4900
3000
3600
4900
5700
6500
6600
6700
6900
3200
4300
6500
7600
8700
8800
9000
9200
4400
5500
6500
8000
9500
11,000
12,000
12,000
6500
7900
10,000
12,000
14,000
16,000
16,000

74.7
87.5
113
118
123
123
122
131
80.1
97.1
131
153
175
178
180
184
85
115
174
204
233
237
240
247
117
146
176
215
254
282
309
315
174
212
272
333
376
420
429

4600
5200
6300
6700
7100
7400
7600
7900
4700
5800
8000
8700
9400
9800
10,000
11,000
4700
6600
10,000
12,000
13,000
13,000
14,000
14,000
7000
8800
11,000
13,000
15,000
16,000
17,000
17,000
9000
11,000
15,000
20,000
21,000
23,000
23,000

124
139
169
180
191
197
203
212
127
156
215
234
252
264
275
292
126
176
276
310
344
359
373
380
188
237
286
338
391
418
446
458
241
302
415
527
565
604
623

1. To obtain capacities for regulators using metal diaphragms, multiply the table values by 0.8.
2. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.

To determine wide-open flow capacity for relief valve sizing of air
at a temperature of 60°F, use the equation for critical pressure
drops (absolute outlet pressure equal to one-half or less than
one-half the absolute inlet pressure).
Q = P1(abs)Cg
where,
	

Q	

= Gas flow, SCFH (60°F and 14.7 psia)

	P1(abs) = Absolute inlet pressure, psia (add 14.7 psi
to gauge inlet pressure to obtain absolute
inlet pressure)
	Cg 	

= Wide-open gas sizing coefficient from
Table 5

For pressure drops lower than critical (absolute outlet
pressure greater than one-half the absolute inlet pressure),
use the sizing nomographs in Fisher® Catalog 10, or the
Fisher Sizing Program.
To obtain capacities in Nm3/h at 0°C and 1.01325 bar,
multiply the capacity determined in SCFH by 0.0268.

14

Steam Capacities
Capacities in Tables 15, 16, 17, 18 and 19 are in lbs/h
of saturated steam. To obtain capacities in kg/h, multiply
the capacities given in the table by 0.4535. Capacities
have been calculated for stainless steel diaphragms only
since steam service exceeds the elastomer diaphragm
temperature limits.
To determine wide-open flow capacity for relief valve sizing
of steam, use the equation for critical pressure drops
(absolute outlet pressure equal to one-half or less than onehalf absolute inlet pressure).
Q = P1(abs)Cs
where,
	

Q	

= Steam flow, lbs/h

	P1(abs) = Absolute inlet pressure, psia (add 14.7 psi
to gauge inlet pressure to obtain absolute
inlet pressure)
	Cs 	

= Wide-open steam sizing coefficient from
Table 5

Bulletin 71.1:MR95
Table 11. A
 ir Capacities(1)(2) in SCFH / Nm3/h for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Types MR95H and MR95HD
Regulators with Elastomer Diaphragm
PRESSURE
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

Outlet /
Differential
Setting
psig

15

50

100

1/2 / 15

3/4 / 20

1 / 25

Droop

Droop

Droop

Droop

10%

20%

10%

SCFH

Nm3/h

20%

SCFH

Nm3/h

10%

SCFH

Nm3/h

20%

SCFH

Nm3/h

10%

SCFH

Nm3/h

20%

psig

bar

SCFH

1.0

30
40
50
75
100
150
200
250
300

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

430
530
640
850
1100
1600
2200
2300
2400

11.5
14.2
17
22.9
28.8
44.1
59.4
61.4
63.3

780
940
1100
1500
1900
2200
2500
2600
2800

20.9
25.3
29.7
40.1
50.6
59.2
67.8
70.8
73.8

1000
1200
1400
1600
1800
2500
3200
3700
4200

27.2
32.6
38
43.7
49.3
68
86.6
99.1
112

1700
1900
2200
2400
2700
3300
3900
4300
4700

44.5
51.4
58.4
64.8
71.2
88.2
105
115
126

2100
2500
2800
3700
4600
5700
6900
7200
7400

56
65.9
75.8
99.4
123
154
185
192
198

3300
3900
4500
5500
6500
7300
8200
8600
9100

88.3
104
120
147
174
196
219
231
244

2300
3100
3800
5200
6500
8400
10,000
12,000
13,000

62.8
82.3
102
138
174
226
277
315
354

4100
5300
6600
8300
10,000
12,000
14,000
16,000
18,000

110
143
176
223
269
327
385
428
472

2.1

40
50
75
100
150
200
250
300

2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

750
1000
1400
1700
2000
2400
2900
3400

20.1
27.4
36.9
46.5
54.8
63.1
76.9
90.7

1400
1600
2200
2800
3200
3600
3900
4100

36.2
42.4
58.3
74.2
85.4
96.5
104
111

1700
2000
2500
3000
3500
4000
4800
5600

45.8
53.7
66.9
80.1
94.1
108
129
150

3000
3400
3900
4400
5100
5800
6400
7000

81.5
90.3
104
117
137
157
172
186

3500
4100
5400
6700
6600
6400
6400
6400

93.8
110
144
179
176
173
172
172

6000
7100
8500
9900
10,000
10,000
11,000
11,000

161
189
227
264
273
281
284
288

4000
5600
7600
9600
12,000
15,000
15,000
15,000

107
149
203
258
329
401
401
400

8000
10,000
13,000
16,000
19,000
21,000
21,000
21,000

214
269
350
431
496
561
568
576

3.4

60
75
100
150
200
250
300

4.1
5.2
6.9
10.3
13.8
17.2
20.7

1000
1400
1800
2500
3200
3800
4400

26.8
38.5
48.8
66.7
84.6
102
119

2000
2500
3200
4100
5000
5300
5600

53.6
68.1
86.2
110
134
142
149

2500
3100
3800
4800
5800
6500
7100

66.2
83.6
101
128
156
173
191

4500
5200
6200
7300
8500
8900
9300

121
140
165
196
227
238
250

5900
6500
8100
9500
11,000
12,000
12,000

158
175
218
255
292
310
329

9500
11,000
13,000
15,000
17,000
17,000
18,000

255
287
340
394
447
465
482

5500
8500
10,000
14,000
18,000
18,000
17,000

147
228
272
382
493
471
448

12,000
14,000
18,000
22,000
26,000
28,000
29,000

327
385
488
595
702
740
777

5.2

100
125
150
200
250
300

6.9
8.6
10.3
13.8
17.2
20.7

2400
3000
3500
4600
5300
5900

65.4
79.8
94.2
123
141
159

3900
4700
5500
7200
7600
8100

105
127
149
192
205
217

3000
4100
5200
7300
8300
9300

80.6
109
138
196
222
249

6700
7700
8600
11,000
12,000
13,000

179
205
231
283
313
344

10,000
12,000
13,000
16,000
16,000
17,000

278
313
349
420
438
456

17,000
18,000
20,000
24,000
25,000
26,000

445
491
537
630
657
684

12,000
15,000
18,000
23,000
24,000
25,000

316
393
470
624
650
677

19,000
24,000
28,000
37,000
38,000
40,000

519
636
752
985
1030
1070

6.9

125
150
175
200
250
300

8.6
10.3
12.1
13.8
17.2
20.7

2200
2700
3100
3500
4200
4800

58.7
73.1
83.6
94.2
112
129

3600
4500
5200
5800
6700
7500

96.6
122
139
157
179
202

5400
6400
7100
7900
8900
10,000

144
172
191
211
240
269

8900
10,000
11,000
12,000
13,000
15,000

239
277
298
320
360
399

12,000
14,000
16,000
18,000
20,000
22,000

323
381
438
495
540
586

20,000
23,000
25,000
28,000
30,000
32,000

525
610
684
758
808
858

13,000
17,000
19,000
21,000
25,000
29,000

343
459
512
564
668
771

21,000
27,000
31,000
35,000
40,000
45,000

573
736
838
939
1080
1210

10.3

175
200
225
250
300

12.1
13.8
15.5
17.2
20.7

3400
4200
4900
5600
7000

91
114
132
151
188

5400
6500
7400
8200
10,000

144
174
198
221
267

8900
10,000
11,000
12,000
13,000

238
272
290
309
346

14,000
16,000
17,000
17,000
18,000

371
429
443
457
485

13,000
16,000
18,000
19,000
23,000

357
425
473
521
616

26,000
31,000
33,000
36,000
40,000

709
835
894
954
1070

18,000
25,000
28,000
31,000
37,000

481
665
747
829
994

30,000
36,000
41,000
47,000
58,000

793
961
1110
1260
1560

70 to 150 /
4.8 to 10.3
150

1/4 NPT

bar

25 to 75 /
1.7 to 5.2

75

Inlet

Nm3/h

15 to 30 /
1.0 to 2.1

30

REGULATOR BODY SIZE, IN. / DN

SCFH

Nm3/h

SCFH

Nm3/h

1. To obtain capacities for Type MR95HT (metal diaphragm), multiply the table values by 0.6.
2. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.

For pressure drops lower than critical (absolute outlet
pressure greater than one-half absolute inlet pressure),
use the sizing nomographs in the Fisher® Sizing Program.

Water Capacities
All water capacities in Tables 20, 21, 22, 23 and 24 are in
gallons per minute (GPM). Capacities in Tables 20, 21 and
23 are for regulators using only elastomer diaphragms.
Depending on regulator size, a multiplier, given in these

tables, must be used to convert to capacities for regulators
using metal diaphragms.
To determine flow capacity for liquid relief valve sizing, refer
to the Fisher Sizing Program using the Cv coefficients given
in Table 5. The Km values listed in Table 5 can be used to
predict choked flow on liquid service.
To convert capacities to m3/h, multiply GPM by 0.2271.

15

Bulletin 71.1:MR95
Table 12. Air Capacities(1) in SCFH / Nm3/h for 1-1/2 through 2 in. / DN 40 through 50 Types MR95H and MR95HD Regulators with
Elastomer or Stainless Steel Diaphragm
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

PRESSURE
Outlet/
Differential
Setting
psig

5

30

75

60 to 120 /
4.1 to 8.3

100 to 140 /
6.9 to 97

120 to 150 /
8.3 to 10.3

100

125

150

Inlet

Droop
10%

Droop

20%

40%

10%

20%

40%

psig

bar

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

0.34

10
20
30
50
75
100
150
200
250
300

0.69
1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2
20.7

1000
1600
2100
3200
4100
5000
5500
5900
7500
9000

27.5
41.7
56
84.5
109
134
146
159
200
241

1500
2200
2800
4200
5700
7200
7900
8600
10,000
12,000

40.7
58.4
76.2
112
153
194
213
231
273
315

2500
3700
4900
7300
9800
12,000
13,000
13,000
15,000
18,000

68.2
99.8
131
195
264
333
347
360
415
471

1000
1600
2200
3300
5000
6600
10,000
14,000
21,000
29,000

26.9
42.6
58.3
89.7
134
177
270
363
569
775

1400
2300
3200
4900
7200
9500
26,000
42,000
47,000
51,000

38.6
61.7
84.9
131
193
256
695
1130
1250
1360

2600
4000
5400
8100
15,000
21,000
36,000
50,000
51,000
51,000

70.8
107
144
216
392
568
959
1350
1350
1360

2.1

40
50
75
100
150
200
250
300

2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

7900
8100
14,000
20,000
21,000
23,000
29,000
35,000

212
216
372
527
568
610
772
934

13,000
14,000
22,000
30,000
33,000
35,000
41,000
47,000

340
362
585
807
872
937
1100
1260

21,000
23,000
37,000
50,000
52,000
53,000
57,000
61,000

551
629
987
1340
1380
1420
1530
1640

10,000
13,000
19,000
26,000
57,000
89,000
100,000
110,000

275
346
516
687
1540
2390
2700
3010

18,000
22,000
43,000
64,000
86,000
110,000
110,000
110,000

471
590
1150
1710
2300
2890
2980
3060

30,000
38,000
58,000
79,000
93,000
110,000
110,000
110,000

814
1010
1560
2110
2500
2890
2980
3060

3.4

60
75
100
150
200
250
300

4.1
5.2
6.9
10.3
13.8
17.2
20.7

13,000
19,000
26,000
29,000
32,000
42,000
51,000

349
516
697
779
860
1110
1370

27,000
33,000
41,000
47,000
53,000
60,000
68,000

724
873
1100
1250
1410
1620
1820

48,000
52,000
65,000
72,000
78,000
87,000
96,000

1290
1400
1750
1920
2090
2330
2570

14,000
21,000
34,000
77,000
120,000
140,000
160,000

383
570
925
2050
3180
3700
4220

32,000
42,000
67,000
110,000
140,000
150,000
160,000

869
1120
1810
2820
3840
4100
4350

50,000
55,000
76,000
110,000
150,000
150,000
160,000

1340
1490
2030
2960
3900
4120
4350

5.2

100
125
150
200
250
300

6.9
8.6
10.3
13.8
17.2
20.7

28,000
35,000
42,000
56,000
62,000
68,000

753
939
1120
1490
1660
1830

48,000
59,000
71,000
94,000
97,000
100,000

1280
1590
1900
2530
2600
2670

68,000
82,000
95,000
120,000
130,000
140,000

1830
2190
2560
3290
3560
3840

33,000
55,000
78,000
120,000
170,000
210,000

875
1480
2090
3300
4440
5580

62,000
82,000
100,000
140,000
180,000
210,000

1650
2190
2730
3800
4750
5690

71,000
90,000
110,000
150,000
180,000
210,000

1910
2410
2920
3930
4810
5690

6.9

125
150
175
225
250
300

8.6
10.3
12.1
15.5
17.2
20.7

33,000
37,000
41,000
49,000
48,000
47,000

881
987
1090
1300
1290
1270

60,000
65,000
70,000
81,000
84,000
91,000

1600
1740
1880
2170
2260
2440

81,000
94,000
110,000
130,000
140,000
150,000

2160
2520
2890
3610
3730
3980

38,000
60,000
83,000
130,000
150,000
180,000

1020
1620
2230
3440
3920
4900

70,000
90,000
110,000
150,000
170,000
210,000

1880
2420
2960
4050
4580
5650

86,000
110,000
120,000
160,000
180,000
210,000

2310
2830
3340
4360
4820
5750

8.6

150
175
200
225
250
300

10.3
12.1
13.8
15.5
17.2
20.7

40,000
46,000
53,000
63,000
74,000
96,000

1070
1240
1410
1700
1990
2560

69,000
83,000
97,000
110,000
120,000
150,000

1840
2220
2600
2960
3310
4020

94,000
110,000
130,000
150,000
160,000
190,000

2520
3020
3520
3910
4310
5110

38,000
44,000
50,000
81,000
110,000
170,000

1020
1190
1350
2170
2990
4640

76,000
100,000
120,000
140,000
160,000
210,000

2030
2670
3310
3870
4420
5530

100,000
120,000
140,000
160,000
180,000
220,000

2710
3260
3800
4310
4830
5860

10.3

175
200
225
250
300

12.1
13.8
15.5
17.2
20.7

38,000
46,000
51,000
55,000
64,000

1030
1240
1360
1480
1710

70,000
80,000
87,000
94,000
110,000

1870
2150
2330
2520
2890

110,000
130,000
140,000
150,000
180,000

2980
3450
3770
4080
4710

38,000
47,000
54,000
61,000
74,000

1020
1270
1450
1630
1990

76,000
93,000
120,000
140,000
190,000

2040
2490
3160
3840
5190

110,000
140,000
160,000
180,000
220,000

3080
3650
4190
4730
5810

1. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.

16

2 / 50

bar

5 to 80 /
0.34 to 5.5

50

REGULATOR BODY SIZE, IN. / DN
1-1/2 / 40

Bulletin 71.1:MR95
Table 13. Air Capacities(1)(2) in SCFH / Nm3/h for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Type MR95HP
(Elastomer Diaphragm) Regulator
PRESSURE
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

Outlet/
Differential
Setting
psig

Droop
20%

10%

1.0

30
40
50
75
100
150
200
250
300
400
500
600
1000

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0

200
210
220
230
250
370
500
510
520
640
780
910
910

5.36
5.63
5.9
6.17
6.62
10
13.5
13.7
13.9
17.2
20.8
24.4
24.4

300
330
350
400
450
610
770
830
900
950
1000
1100
1100

8.04
8.71
9.38
10.7
11.9
16.2
20.5
22.3
24.1
25.5
27.8
30.1
30.1

350
610
810
1200
1200
1800
2400
2400
2400
2700
2800
2900
3500

9.47
16.4
21.8
31.5
32
47.9
63.9
64.3
64.6
71.1
75.1
79
93.3

410
790
1100
1600
1900
2600
3300
3300
3300
3600
4100
4600
5000

3.4

60
75
100
150
200
250
300
400
500
600
1000

4.1
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0

880
920
1000
1100
1300
1400
1600
1700
1700
1800
1800

23.6
24.7
26.9
30.5
34
38.2
42.4
46.3
46.8
47.4
48.3

1500
1600
1600
1800
2100
2200
2300
2400
2500
2500
2500

40.4
41.8
42.5
48.8
55
57.7
60.3
64.7
65.7
66.7
67

3000
3200
3500
4300
5100
5700
6200
7000
7200
7400
7300

80.4
85.5
94
115
136
152
167
188
193
199
195

6.9

125
150
175
200
250
300
400
500
600
1000

8.6
10.3
12.1
13.8
17.2
20.7
27.6
34.5
41.4
69.0

2000
2100
2200
2400
2600
2800
3100
3100
3200
3200

54.4
57.3
60.3
63.2
69.1
75.1
81.8
83.6
85.5
85.8

3100
3300
3500
3700
3900
4100
4300
4400
4500
4500

84.2
89.1
94
99
105
111
116
119
122
121

6600
7200
7800
8400
9800
11,000
12,000
12,000
12,000
14,000

8.6

150
175
200
225
250
300
400
500
600
1000

10.3
12.1
13.8
15.5
17.2
20.7
27.6
34.5
41.4
69.0

1400
1500
1600
1700
1800
2000
2200
2500
2700
2000

37.1
39.9
42.7
45.2
47.7
52.8
60
65.8
71.5
53

2300
2400
2600
2700
2900
3200
3500
3900
4300
4000

60.6
64.9
69.3
73.3
77.3
85.4
93.1
104
114
108

13.8

225
250
300
350
400
450
500
600
1000

15.5
17.2
20.7
24.1
27.6
31.0
34.5
41.4
69.0

2300
2600
3000
3200
3300
3500
3700
4000
4500

62.3
68.4
80.6
85.1
89.5
93.9
98.3
107
120

4000
4200
4700
5100
5400
5600
5800
6200
6900

300

20.7

350
400
450
500
550
600
1000

24.1
27.6
31.0
34.5
37.9
41.4
69.0

4000
4400
4700
5000
5300
5600
6300

106
118
126
135
143
151
169

400

27.6

500
600
1000

34.5
41.4
69.0

5700
6500
9000

152
174
241

50

200

1 / 25

Droop
20%

bar

125

80 to 400 /
5.5 to 27.6
Type MR95HP Only

Droop
10%

3/4 / 20

psig

100

80 to 300 /
5.5 to 20.7

Inlet

1/2 / 15

bar

15

15 to 100 /
1.0 to 6.9

REGULATOR BODY SIZE, IN. / DN
1/4 NPT

SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h

10%

Droop
20%

10%

20%

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

10.9
21.1
29.1
43.6
50.5
69.3
88.2
87.8
87.5
96.8
110
123
135

1100
1500
1700
2300
2800
3000
3300
3700
4200
4400
4600
4900
5500

29.6
39.3
46.9
60.5
74.4
81
87.6
100
113
117
124
131
148

2500
2900
3200
3800
4300
4700
5000
5400
5800
6100
6400
6700
7400

67.3
78
86.3
101
115
125
135
146
156
164
172
179
198

2000
2200
2400
2900
3300
4200
5200
5500
5900
6700
7200
7700
8900

54.1
59
64
76.4
88.9
114
139
148
157
179
194
205
239

3600
3900
4100
4800
5500
6900
8200
9100
10,000
11,000
12,000
13,000
15,000

96.5
104
111
129
147
184
220
245
269
298
323
343
400

5100
5300
5700
6600
7500
8200
9000
9300
9500
9600
10,000

137
143
154
178
201
221
241
250
254
258
273

6500
6800
7300
8200
9200
10,000
11,000
9300
10,000
11,000
13,000

174
182
195
221
246
268
289
248
272
296
353

10,000
10,000
11,000
12,000
14,000
15,000
16,000
14,000
15,000
16,000
18,000

268
276
290
328
367
391
416
379
405
430
478

6000
6700
7900
10,000
13,000
15,000
17,000
19,000
21,000
23,000
28,000

161
180
211
277
343
393
444
510
564
617
741

11,000
12,000
13,000
17,000
20,000
23,000
25,000
29,000
31,000
33,000
38,000

295
317
354
450
547
607
667
778
835
893
1030

176
192
208
224
262
300
312
323
333
381

10,000
11,000
12,000
13,000
15,000
16,000
18,000
17,000
17,000
19,000

277
303
328
354
396
438
480
468
456
514

12,000
13,000
15,000
16,000
19,000
21,000
16,000
18,000
19,000
21,000

314
357
399
442
497
553
439
479
518
557

19,000
21,000
23,000
25,000
27,000
29,000
25,000
27,000
28,000
31,000

499
556
613
671
724
776
673
716
759
820

13,000
16,000
19,000
21,000
25,000
29,000
33,000
36,000
39,000
46,000

361
430
499
569
670
771
896
970
1040
1230

22,000
26,000
31,000
36,000
40,000
45,000
50,000
54,000
57,000
66,000

583
708
834
959
1090
1210
1350
1450
1540
1770

4500
5100
5700
6000
6400
7100
8900
10,000
11,000
15,000

119
136
153
162
171
190
240
270
301
395

7600
8400
9200
9800
10,000
12,000
14,000
16,000
17,000
21,000

205
226
247
263
279
311
387
427
467
553

9600
11,000
12,000
13,000
14,000
15,000
17,000
19,000
20,000
27,000

257
287
317
340
363
410
454
499
543
722

16,000
17,000
19,000
20,000
22,000
25,000
27,000
29,000
30,000
38,000

424
468
513
550
587
661
713
765
817
1020

9700
11,000
13,000
14,000
15,000
18,000
22,000
26,000
30,000
40,000

261
305
348
380
411
474
592
700
807
1070

17,000
19,000
21,000
23,000
25,000
29,000
36,000
41,000
46,000
65,000

447
507
568
624
679
791
966
1110
1240
1750

107
113
127
136
144
150
156
167
186

8000
9000
11,000
12,000
14,000
15,000
15,000
17,000
22,000

216
242
293
330
368
391
414
461
585

14,000
15,000
17,000
20,000
22,000
23,000
24,000
27,000
31,000

362
396
463
523
583
619
655
727
834

16,000
18,000
21,000
24,000
27,000
27,000
28,000
29,000
41,000

435
474
553
637
721
736
752
782
1090

27,000
30,000
36,000
42,000
48,000
47,000
46,000
45,000
59,000

714
796
958
1120
1280
1260
1240
1210
1590

18,000
20,000
23,000
27,000
31,000
34,000
37,000
44,000
56,000

479
528
628
723
818
909
1000
1180
1510

31,000
34,000
40,000
47,000
53,000
57,000
61,000
69,000
87,000

830
912
1080
1250
1430
1540
1640
1860
2340

6800
7200
7600
8000
8400
8800
10,000

181
194
205
215
225
236
268

14,000
17,000
18,000
20,000
21,000
23,000
30,000

386
444
484
524
564
604
812

24,000
28,000
30,000
32,000
34,000
36,000
46,000

646
761
814
866
919
971
1230

25,000
26,000
31,000
35,000
40,000
44,000
57,000

677
704
826
949
1070
1190
1530

40,000
41,000
48,000
55,000
62,000
70,000
85,000

1080
1100
1290
1480
1680
1870
2290

32,000
37,000
42,000
47,000
53,000
58,000
80,000

850
987
1130
1270
1410
1560
2160

56,000
65,000
73,000
81,000
89,000
96,000
100,000

1500
1740
1950
2160
2380
2590
2750

9800
11,000
13,000

263
292
355

21,000
26,000
35,000

559
693
934

35,000
42,000
54,000

944
1130
1450

38,000
45,000
61,000

1010
1210
1640

64,000
79,000
100,000

1710
2120
2700

49,000
59,000
80,000

1320
1590
2150

86,000
110,000
140,000

2310
2860
3650

1. To obtain capacities for Type MR95HT (metal diaphragm), multiply the table values by 0.6. Capacity data for 1000 psig / 69.0 bar inlet is not applicable for Type MR95HT (Type MR95HT
max. inlet = 600 psig / 41.4 bar).
2. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.

17

Bulletin 71.1:MR95
Table 14. Air Capacities(1) in SCFH / Nm3/h for 1-1/2 through 2 in. / DN 40 through 50 Type MR95HP
(Elastomer Diaphragm) Regulator
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

PRESSURE
Outlet/
Differential
Setting
psig

15

100

125

60 to 260 /
4.1 to 17.9

200

250

60 to 300 /
4.1 to 20.7
Type MR95HP Only

300

Inlet

2 / 50

Droop

Droop

10%

20%

40%

20%

40%

psig

bar

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

SCFH

Nm3/h

1.0

30
40
50
75
100
150
200
250
300
400
500
600
1000

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0

4000
5000
6000
8400
11,000
12,000
13,000
14,000
15,000
11,000
7700
11,000
12,000

108
134
161
226
292
321
351
379
407
306
205
282
313

6000
7600
9300
13,000
16,000
20,000
23,000
22,000
22,000
17,000
12,000
14,000
17,000

160
205
249
343
437
524
611
596
582
454
327
363
461

11,000
13,000
15,000
21,000
27,000
31,000
34,000
34,000
35,000
35,000
35,000
35,000
35,000

286
346
405
566
727
820
913
924
934
936
938
938
938

4000
5700
7400
11,000
15,000
43,000
71,000
45,000
35,000
35,000
35,000
35,000
35,000

107
152
198
301
404
1150
1890
1210
937
937
937
937
937

6700
9300
12,000
26,000
41,000
60,000
80,000
81,000
82,000
82,000
82,000
82,000
82,000

179
250
322
709
1100
1620
2150
2180
2210
2210
2210
2210
2210

13,000
18,000
23,000
38,000
53,000
66,000
80,000
81,000
82,000
82,000
82,000
82,000
82,000

338
484
629
1020
1420
1780
2150
2180
2210
2210
2210
2210
2210

4.1
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0

11,000
14,000
19,000
27,000
34,000
42,000
50,000
46,000
42,000
27,000
28,000

306
387
521
712
902
1120
1340
1240
1140
730
762

21,000
27,000
36,000
51,000
66,000
70,000
75,000
70,000
66,000
54,000
73,000

553
712
978
1370
1770
1890
2010
1890
1770
1450
1960

38,000
48,000
63,000
80,000
97,000
97,000
97,000
97,000
97,000
98,000
100,000

1020
1280
1700
2140
2590
2600
2600
2600
2600
2630
2690

13,000
19,000
27,000
78,000
130,000

361
496
722
2100
3480

3.4

60
75
100
150
200
250
300
400
500
600
1000

92,000
92,000
92,000
92,000
92,000
92,000

2450
2450
2450
2450
2450
2450

24,000
39,000
64,000
100,000
140,000
160,000
180,000

642
1050
1720
2800
3880
4340
4800

44,000
57,000
80,000
110,000
150,000
160,000
180,000

1170
1540
2140
3080
4020
4410
4800

180,000
180,000
180,000
180,000

4800
4800
4800
4800

180,000
180,000
180,000
180,000

4800
4800
4800
4800

6.9

125
150
200
250
300
400
500
600
1000

8.6
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0

29,000
38,000
54,000
59,000
65,000
68,000
71,000
81,000
100,000

791
1010
1440
1580
1730
1810
1890
2160
2680

56,000
75,000
110,000
110,000
110,000
120,000
120,000
130,000
140,000

1510
2000
2990
3010
3030
3190
3350
3580
3840

86,000
100,000
140,000
150,000
170,000
170,000
180,000
180,000
180,000

2290
2760
3700
4100
4500
4610
4720
4710
4780

40,000
72,000
140,000
180,000
220,000
230,000
230,000
230,000
230,000

1080
1930
3620
4760
5910
6030
6030
6030
6030

75,000
98,000
150,000
180,000
220,000
230,000
230,000
230,000
230,000

2010
2640
3890
4950
6020
6170
6170
6170
6170

89,000
110,000
150,000
190,000
230,000
240,000
240,000
240,000
250,000

2390
2950
4080
5080
6080
6430
6430
6430
6700

8.6

150
175
200
225
250
300
400
500
600
1000

10.3
12.1
13.8
15.5
17.2
20.7
27.6
34.5
41.4
69.0

23,000
27,000
31,000
34,000
38,000
44,000
54,000
63,000
75,000
77,000

616
724
831
920
1010
1190
1440
1680
2010
2060

37,000
44,000
51,000
56,000
60,000
68,000
89,000
110,000
120,000
120,000

1000
1190
1380
1490
1600
1830
2370
2920
3290
3290

71,000
83,000
95,000
100,000
110,000
130,000
140,000
160,000
180,000
190,000

1900
2220
2550
2750
2960
3360
3870
4380
4750
5100

26,000
30,000
35,000
41,000
48,000
61,000
73,000
84,000
93,000
94,000

697
817
938
1110
1290
1640
1940
2250
2490
2520

46,000
57,000
67,000
87,000
110,000
150,000
180,000
210,000
240,000
240,000

1240
1520
1800
2340
2890
3980
4830
5710
6430
6430

91,000
110,000
130,000
150,000
170,000
210,000
230,000
260,000
280,000
300,000

2440
2970
3510
4020
4540
5570
6190
7010
7600
8040

13.8

225
250
300
350
400
450
500
600
1000

15.5
17.2
20.7
24.1
27.6
31.0
34.5
41.4
69.0

39,000
45,000
57,000
64,000
71,000
79,000
86,000
100,000
130,000

1040
1200
1520
1710
1910
2110
2300
2710
3450

68,000
76,000
94,000
110,000
120,000
130,000
140,000
170,000
230,000

1810
2050
2520
2830
3140
3450
3770
4480
6090

130,000
140,000
170,000
190,000
210,000
230,000
250,000
280,000
290,000

3380
3770
4570
5100
5630
6160
6690
7390
7690

43,000
49,000
62,000
72,000
80,000
88,000
95,000
110,000
140,000

1150
1320
1650
1920
2150
2360
2540
2860
3760

85,000
100,000
150,000
180,000
210,000
230,000
250,000
290,000
350,000

2270
2810
3900
4770
5530
6200
6800
7850
9380

150,000
170,000
220,000
250,000
270,000
300,000
320,000
360,000
370,000

4010
4600
5770
6630
7320
8010
8690
9610
10,000

17.2

275
300
350
400
450
500
550
600
1000

19.0
20.7
24.1
27.6
31.0
34.5
37.9
41.4
69.0

53,000
63,000
73,000
84,000
95,000
110,000
110,000
110,000
160,000

1430
1680
1960
2250
2540
2820
2950
3070
4400

94,000
110,000
120,000
140,000
160,000
170,000
180,000
190,000
240,000

2520
2840
3280
3720
4160
4600
4870
5150
6320

160,000
190,000
210,000
240,000
260,000
290,000
310,000
330,000
390,000

4400
5000
5670
6340
7000
7670
8200
8740
10,500

51,000
63,000
81,000
92,000
100,000
120,000
120,000
130,000
180,000

1370
1700
2160
2470
2790
3100
3240
3380
4840

110,000
130,000
130,000
150,000
170,000
190,000
200,000
210,000
260,000

2820
3550
3610
4100
4580
5060
5360
5660
6950

180,000
200,000
230,000
260,000
290,000
310,000
340,000
360,000
430,000

4870
5490
6240
6970
7700
8440
9030
9610
11,500

20.7

350
400
450
500
550
600
1000

24.1
27.6
31.0
34.5
37.9
41.4
69.0

75,000
89,000
100,000
110,000
120,000
130,000
190,000

2010
2380
2690
2990
3180
3360
5090

140,000
150,000
170,000
200,000
210,000
210,000
330,000

3750
4040
4680
5320
5510
5690
8770

230,000
260,000
280,000
310,000
330,000
350,000
460,000

6030
6860
7640
8420
8840
9260
12,400

80,000
98,000
110,000
120,000
130,000
140,000
210,000

2140
2620
2960
3290
3490
3700
5600

200,000
170,000
190,000
220,000
230,000
230,000
360,000

5360
4450
5150
5850
6060
6260
9650

250,000
280,000
310,000
350,000
360,000
380,000
510,000

6640
7540
8400
9260
9730
10,200
13,600

1. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.
- Denotes capacities limited by boost.

18

10%

bar

15 to 100 /
1.0 to 6.9
50

REGULATOR BODY SIZE, IN. / DN
1-1/2 / 40

Bulletin 71.1:MR95
Table 15. Steam Capacities(1) for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Types MR95L and MR95LD Regulators with
Metal Diaphragm
PRESSURE
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE RANGE,
psig/psi / bar

Outlet/
Differential
Setting
psig

2 to 6 /
0.14 to 0.41

5

10

20

3/4 / 20

1 / 25

Droop

Droop

Droop

Droop

10%

20%

10%

20%

10%

20%

10%

20%

psig

bar

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

0.34

20
30
50
75
100
150
200
250

1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2

26
33
48
55
62
62
62
62

11.8
15
21.9
25
28.1
28.2
28.2
28.2

32
38
52
58
65
69
69
69

14.5
17.4
23.5
26.6
29.7
31.3
31.3
31.3

35
39
41
45
45
52
55
52

16.1
17.5
18.9
20.3
20.3
23.5
25
23.5

53
56
59
62
62
69
72
72

24.1
25.4
26.7
28.2
28.2
31.3
32.8
32.9

43
49
63
79
93
83
72
69

19.3
22.4
28.4
36.1
42.3
37.5
32.9
31.3

78
88
110
120
130
140
140
130

35.4
39.9
50.5
54.9
61
62.6
62.6
59.5

99
120
150
150
160
160
160
170

45.1
52.7
66.3
69
72
72
72
76.7

160
180
220
230
240
250
260
270

74.1
83
99.4
105
111
116
119
124

0.69

20
30
50
75
100
150
200
250

1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2

24
33
52
62
72
76
83
83

10.8
15.2
23.6
28.1
32.8
34.4
37.5
37.5

33
42
59
69
79
79
83
83

15
19.1
26.7
31.3
36
36
37.5
37.5

43
46
59
59
62
69
72
79

19.5
20.9
26.9
26.7
28.2
31.3
32.8
36

68
71
83
86
93
100
100
110

30.8
32
37.9
39.2
42.2
45.4
46.9
50.1

61
67
87
97
110
120
130
150

27.6
30.6
39.7
44.1
50.2
54.8
57.9
67.3

96
110
130
150
160
180
200
210

43.8
49.8
60.3
67.7
73.7
81.3
89.2
95.4

110
130
170
200
220
230
230
240

48.8
57.9
77.9
89.8
102
103
105
108

170
210
280
300
320
340
340
380

76.3
93.2
127
137
147
153
156
172

1.0

20
30
50
75
100
150
200
250

1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2

22
33
56
69
86
89
96
96

9.81
15
25.3
31.3
39.1
40.7
43.8
43.8

30
42
66
79
93
96
96
96

13.5
19.3
30
36
42.2
43.8
43.8
43.8

54
64
81
83
86
93
100
100

24.6
29.1
36.6
37.8
39.2
42.2
45.4
45.4

79
89
100
110
120
130
140
140

35.9
40.3
47.7
51.9
54.8
59.4
64.1
64.1

58
68
91
100
120
130
150
160

26.2
30.8
41.6
47.5
55
61.1
67.3
73.5

90
110
150
170
180
200
230
250

40.9
48.5
67
75.8
83.3
92.4
103
113

120
150
230
260
300
300
310
320

52.4
69.7
104
120
137
138
141
144

170
230
350
420
450
450
480
480

76.8
107
160
190
204
203
219
219

1.4

30
40
50
75
100
150
200
250

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2

25
34
42
59
72
86
100
100

11.5
15.6
19.1
26.7
32.8
39.1
45.4
46.9

39
49
59
76
93
100
110
110

17.8
22.4
27
34.5
42.2
45.4
48.5
48.5

65
75
85
91
97
100
110
120

29.3
33.9
38.5
41.2
44
46.9
50.1
54.8

100
110
130
130
140
150
160
170

47.1
51.5
57.5
60
62.7
68.8
73.5
75.1

72
78
81
100
120
140
150
170

32.6
35.6
37
46.1
55.2
62.7
70.4
78.2

120
130
140
170
200
220
230
270

55.3
58.1
62.5
77.7
91.4
98.7
106
124

160
200
230
280
330
380
410
410

71.8
89
104
127
150
172
188
188

250
310
390
450
520
550
590
590

114
142
176
206
236
251
266
266

2.1

40
50
75
100
150
200
250

2.76
3.4
5.2
6.9
10.3
13.8
17.2

32
46
66
86
110
130
130

14.3
21
30.2
39.3
48.5
57.9
61

50
64
87
110
120
140
140

22.7
29
39.6
50.2
56.3
62.6
62.6

97
100
120
130
140
150
160

44.1
47
52.7
60.1
64.3
68.8
73.5

150
160
180
190
200
220
230

68.3
72.6
79.6
86.8
92.4
98.5
103

86
96
120
140
170
200
230

39.2
43.8
54.5
63.6
77.1
92.5
103

130
150
180
220
270
310
340

57
66.3
83.1
102
121
139
157

230
280
350
420
480
550
550

106
128
160
191
220
251
250

320
390
530
700
730
790
790

147
178
240
317
330
360
360

13 to 30 /
0.90 to 2.1

30

Inlet

1/2 / 15

bar

5 to 15 /
0.34 to 1.0

15

REGULATOR BODY SIZE, IN. / DN
1/4 NPT

1. Capacities are based in lbs/h / kg/h of saturated steam.

19

Bulletin 71.1:MR95
Table 16. Steam Capacities(1) for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Types MR95H and MR95HD Regulators with
Metal Diaphragm
PRESSURE
RECOMMENDED
OUTLET/
Outlet/
DIFFERENTIAL
Differential
Inlet
PRESSURE
Setting
RANGE,
psig/psi / bar
psig bar psig bar

15

50

100

1 / 25

Droop

Droop

10%

20%

10%

20%

10%

20%

10%

20%

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

1.0

11
14
17
22
28
41
57
59
62

5.2
6.34
7.6
9.98
12.9
18.8
25.8
27
28.2

21
25
29
39
49
57
65
67
72

9.41
11.2
13
17.6
22.3
25.8
29.3
30.5
32.8

27
32
37
42
47
65
83
96
110

12.1
14.4
16.7
18.9
21.1
29.3
37.5
43.4
49.3

45
50
58
62
70
85
100
110
120

20.6
22.8
26.2
28.3
31.7
38.7
45.8
50.5
55.1

56
66
74
97
120
150
180
190
190

25.5
30.2
33.6
43.9
54.3
66.9
81
84.5
86.8

88
100
120
140
170
190
210
220
230

40
46.9
53.9
65.2
76.6
85.7
96.2
101
107

62
82
100
140
170
220
260
310
340

28
37.4
45.6
61.7
76.7
98.6
117
141
153

110
140
170
220
260
310
360
410
460

49.7
63.8
79
98.4
118
141
164
188
211

2.1

40
50
75
100
150
200
250
300

2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

20
27
37
44
52
62
75
88

9.17
12.1
16.7
20
23.5
28.2
34
39.9

37
42
57
72
83
93
100
110

17
19.3
26.1
32.9
37.5
42.2
45.8
48.1

46
53
66
78
91
100
120
140

20.8
24.3
30
35.6
41.1
46.9
56.3
65.7

81
91
100
110
130
150
170
180

36.6
41.2
46.6
52.1
59.9
68
75.1
82.1

94
110
140
180
170
170
170
170

42.9
49.9
64.9
79.9
77.9
75.2
75.1
75.1

160
190
220
260
260
260
280
280

73.3
86.2
102
118
118
117
129
129

110
150
200
250
310
390
390
390

49
68.2
91.4
114
142
176
176
176

220
270
340
420
490
540
540
540

97.7
121
156
190
224
247
247
246

3.4

60
75
100
150
200
250
300

4.1
5.2
6.9
10.3
13.8
17.2
20.7

27
37
47
65
83
98
110

12.3
17
21.6
29.5
37.5
44.6
51.6

54
66
84
110
130
140
140

24.4
30.2
38.2
48.2
58.7
62.2
65.7

68
83
100
130
150
170
180

30.7
37.7
45.7
57
68.3
76.3
83.3

120
140
160
190
220
230
240

55
63
74.4
86.4
99.9
104
109

160
170
220
250
290
310
310

72.5
79.2
97.8
113
130
141
141

260
290
340
390
440
440
470

116
134
156
178
201
200
211

150
230
270
370
470
470
440

67.6
104
121
167
213
212
200

320
370
480
580
680
720
750

147
170
217
262
307
329
341

5.2

100
125
150
200
250
300

6.9
8.6
10.3
13.8
17.2
20.7

64
80
92
120
140
150

29.2
36.2
41.9
54.3
62.2
69.2

99
120
140
190
200
210

45
56.4
65.5
84.8
89.2
95

81
110
140
190
220
240

36.6
49.6
62.5
86.8
98
109

180
200
230
290
310
340

81.5
92.8
103
130
141
153

270
320
340
420
420
440

122
146
157
191
190
201

460
480
530
630
650
670

207
218
240
286
296
307

320
400
480
600
630
650

147
182
217
275
285
295

510
640
740
970
990
1000

231
290
336
441
450
472

6.9

125
150
175
200
250
300

8.6
10.3
12.1
13.8
17.2
20.7

59
72
82
92
110
120

26.9
32.7
37.3
41.8
49.7
56.4

96
120
140
150
170
190

43.7
54.2
62.2
69
79
88

150
170
190
210
230
260

66.1
77.7
85.7
94.9
106
118

240
270
290
320
340
390

108
121
132
144
154
177

320
370
430
480
530
580

147
170
194
217
239
262

540
610
660
740
790
840

244
279
301
336
358
380

350
460
510
560
660
760

159
207
230
253
299
345

560
720
820
920
1000
1200

256
327
374
420
477
534

10.3

175
200
225
250
300

12.1
13.8
15.5
17.2
20.7

92
110
130
150
180

41.7
51.1
59.3
67.4
83.5

140
170
200
220
260

65.8
78.7
89
98.2
119

240
270
290
320
340

109
122
134
145
156

380
430
450
450
470

171
194
205
205
215

350
430
480
510
610

160
195
219
230
277

700
830
880
960
1100

318
377
400
434
480

490
670
750
830
980

221
305
341
376
445

810
960
1100
1200
1500

367
438
497
567
695

1. Capacities are based in lbs/h / kg/h of saturated steam.

20

3/4 / 20

Droop

lb/h

70 to 150 /
4.8 to 10.3
150

1/2 / 15

Droop

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

25 to 75 /
1.7 to 5.2

75

1/4 NPT

30
40
50
75
100
150
200
250
300

15 to 30 /
1.0 to 2.1

30

REGULATOR BODY SIZE, IN. / DN

Bulletin 71.1:MR95
Table 17. Steam Capacities(1) for 1-1/2 through 2 in. / DN 40 through 50 Types MR95H and MR95HD Regulators with
Metal Diaphragm
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

PRESSURE
Outlet/
Differential
Setting
psig

5

30

75

60 to 120 /
4.1 to 8.3

100 to 140 /
6.9 to 9.7

120 to 150 /
8.3 to 10.3

100

125

150

Inlet

1-1/2 / 40

2 / 50

Droop

Droop

10%

20%

40%

10%

20%

40%

bar

psig

bar

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

0.34

10
20
30
50
75
100
150
200
250
300

0.69
1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2
20.7

45
71
92
140
180
210
240
250
320
380

20.4
32.2
41.9
63.2
80.4
97.6
107
115
146
175

67
97
120
180
250
310
340
370
430
510

30.6
44.3
55.8
82.9
112
140
154
167
194
233

110
160
210
320
420
510
560
560
640
770

50.9
74.3
97.6
144
192
234
253
252
291
349

45
71
97
140
220
280
430
600
900
1200

20.4
32.2
43.9
65.2
98
129
194
272
408
563

63
100
140
210
310
410
1100
1800
2000
2200

28.6
46.3
63.8
96.7
141
185
505
816
912
990

120
180
240
350
650
900
1500
2100
2200
2200

52.9
80.3
108
160
294
410
700
971
990
990

2.1

40
50
75
100
150
200
250
300

2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

350
360
620
870
910
990
1200
1500

161
164
280
397
413
450
566
682

580
620
970
1300
1400
1500
1800
2000

265
283
440
595
648
684
799
915

930
1000
1600
2200
2200
2300
2400
2600

424
462
735
987
1020
1030
1110
1190

450
580
840
1100
2500
3800
4300
4700

204
264
381
517
1120
1740
1950
2140

810
980
1900
2800
3700
4700
4700
4700

366
445
859
1270
1690
2150
2140
2140

1300
1700
2500
3400
4000
4700
4700
4700

606
763
1150
1550
1820
2150
2140
2140

3.4

60
75
100
150
200
250
300

4.1
5.2
6.9
10.3
13.8
17.2
20.7

590
850
1200
1300
1400
1800
2200

266
386
523
576
631
825
998

1200
1500
1800
2000
2300
2600
2900

551
668
822
932
1040
1180
1330

2000
2300
2800
3100
3400
3700
4100

887
1040
1290
1420
1530
1700
1870

630
940
1500
3400
5200
6000
6900

287
427
684
1530
2370
2750
3130

1400
1900
3000
4800
6100
6500
6900

653
850
1340
2180
2760
2940
3130

2000
2400
3300
4800
6400
6400
6900

887
1100
1510
2170
2930
2930
3120

5.2

100
125
150
200
250
300

6.9
8.6
10.3
13.8
17.2
20.7

1300
1600
1900
2500
2700
2900

571
707
844
1110
1230
1340

2100
2600
3100
4100
4200
4300

974
1190
1420
1870
1910
1970

3000
3600
4200
5200
5600
6000

1370
1640
1890
2370
2550
2740

1500
2400
3400
5300
7400
9100

672
1110
1570
2390
3360
4140

2800
3600
4400
6100
7800
9100

1260
1650
2000
2780
3550
4130

3100
4000
4800
6400
7800
9000

1430
1800
2190
2910
3530
4110

6.9

125
150
175
225
250
300

8.6
10.3
12.1
15.5
17.2
20.7

1500
1700
1800
2200
2100
2100

674
750
827
980
957
932

2700
2900
3100
3600
3700
4000

1220
1310
1410
1610
1670
1800

3600
4100
4800
5700
6100
6500

1630
1880
2190
2570
2760
2950

1700
2700
3700
5700
6600
7900

776
1220
1670
2600
2990
3570

3100
4000
4900
6600
7400
9100

1420
1820
2210
2990
3380
4150

3800
4700
5300
7000
7800
9100

1730
2130
2390
3170
3550
4130

8.6

150
175
200
225
250
300

10.3
12.1
13.8
15.5
17.2
20.7

1800
2100
2400
2800
3300
4200

818
935
1070
1270
1480
1910

3100
3700
4300
4900
5300
6600

1400
1680
1950
2210
2400
2980

4200
4900
5700
6600
7000
8300

1890
2210
2600
2980
3170
3750

1700
2000
2200
3600
4900
7500

777
894
1010
1630
2210
3390

3400
4500
5300
6200
7000
9200

1550
2020
2420
2810
3200
4180

4400
5300
6100
7000
7800
9400

2020
2410
2800
3180
3550
4260

10.3

175
200
225
250
300

12.1
13.8
15.5
17.2
20.7

1700
2100
2300
2400
2800

778
936
1030
1110
1280

3100
3600
3900
4200
4800

1430
1620
1760
1890
2200

4900
5700
6200
6600
7900

2220
2610
2800
2990
3570

1700
2100
2400
2700
3300

778
957
1090
1230
1480

3400
4100
5300
6200
8400

1550
1880
2420
2810
3800

4900
6000
6900
7700
9300

2220
2740
3120
3500
4230

5 to 80 /
0.34 to 5.5

50

REGULATOR BODY SIZE, IN. / DN

1. Capacities are based in lbs/h / kg/h of saturated steam.

21

Bulletin 71.1:MR95
Table 18. Steam Capacities(1) for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Type MR95HT Regulators with
Metal Diaphragm
PRESSURE
RECOMMENDED
OUTLET/
Outlet/
DIFFERENTIAL
Differential
Inlet
PRESSURE
Setting
RANGE,
psig/psi / bar
psig bar psig bar

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

1.0

30
40
50
75
100
150
200
250
300
400
500
600

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4

4.8
5
5.2
5.4
5.8
8.6
12
12
12
15
18
21

2.19
2.28
2.37
2.44
2.65
3.93
5.31
5.42
5.52
6.8
8.29
9.67

7.2
7.8
8.3
9.3
11
14
18
19
21
22
23
26

3.28
3.57
3.75
4.25
4.78
6.48
8.18
8.82
9.56
10.1
10.6
11.7

8.5
15
19
28
28
42
56
56
56
63
65
68

3.85
6.64
8.76
12.8
12.8
19.1
25.5
25.5
25.5
28.7
29.7
30.8

9.9
19
26
38
44
61
77
77
77
84
96
110

4.49
8.58
11.9
17.1
20.2
27.6
35.1
35.1
35.1
38.2
43.6
48.9

27
36
41
54
66
70
77
86
98
100
110
110

12.1
16.4
18.5
24.7
29.9
31.9
35.1
39.3
44.6
46.8
48.9
52.1

60
70
76
90
100
110
120
130
140
140
150
160

27.5
31.6
34.7
40.8
45.9
50
53.1
57.4
61.6
64.8
68
71.2

48
53
57
69
78
98
120
130
140
160
170
180

22
24
26.1
31.2
35.2
44.7
55.2
58.4
62.7
71.2
76.5
81.8

87
94
98
110
130
160
190
210
230
260
280
300

39.5
42.5
44.4
51.5
58.7
73.3
87.1
96.7
106
117
128
138

3.4

60
75
100
150
200
250
300
400
500
600

4.1
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4

21
22
24
26
30
33
37
40
40
42

9.77
10.1
10.8
11.7
13.8
14.9
17
18.1
18.1
19.1

36
38
38
42
49
51
54
56
58
58

16.6
17.5
17.3
19.2
22.3
23.4
24.4
25.5
26.6
26.6

73
78
84
100
120
130
140
160
170
170

33.3
35.3
38.2
46.2
54.4
60.6
65.9
74.4
76.5
78.6

120
130
140
160
180
190
210
220
220
220

56.4
58.2
61.9
70.7
79.8
87.2
95.6
98.8
101
102

160
170
180
190
220
230
260
220
230
260

72.3
75.1
79.8
88.5
98.6
107
117
98.8
106
117

240
240
260
280
330
350
370
330
350
370

111
110
120
129
150
160
170
149
159
170

150
160
190
240
310
350
400
440
490
540

66.7
74
86.4
108
139
160
181
202
223
244

270
290
310
400
470
540
580
680
720
770

122
132
142
183
214
245
266
308
329
351

6.9

125
150
175
200
250
300
400
500
600

8.6
10.3
12.1
13.8
17.2
20.7
27.6
34.5
41.4

49
51
53
57
61
66
72
72
75

22.1
23
23.9
26
27.8
29.8
32.9
32.9
34

75
79
83
88
92
96
100
100
110

34.1
36
37.9
39.8
41.6
43.6
45.7
46.7
47.8

160
170
190
200
230
260
280
280
280

73.1
79.2
85.3
91.3
106
118
128
127
127

240
260
290
310
350
380
420
400
400

110
120
131
141
161
171
191
181
181

290
320
360
380
450
500
380
420
440

133
143
164
175
206
226
171
192
202

460
510
550
600
640
690
590
630
650

210
230
251
272
291
311
267
287
298

320
390
460
500
600
690
780
840
910

144
176
208
229
271
312
353
383
415

530
630
740
860
950
1100
1200
1300
1300

243
285
338
391
432
483
534
575
606

8.6

150
175
200
225
250
300
400
500
600

10.3
12.1
13.8
15.5
17.2
20.7
27.6
34.5
41.4

34
36
38
41
43
47
51
58
63

15.5
16.5
17.5
18.5
19.5
21.4
23.4
26.6
28.7

56
58
62
64
69
75
82
91
100

25.3
26.2
28.3
29.2
31.2
34.2
37.2
41.4
45.7

110
120
140
140
150
170
210
230
260

49.9
56.2
62.5
65.5
69.6
76.6
95.2
106
117

180
200
220
230
240
280
330
370
400

83.9
92.2
100
106
108
129
149
170
181

230
270
290
310
340
360
400
450
470

107
121
132
142
153
163
183
203
213

390
410
460
480
530
590
640
680
700

177
187
208
218
239
270
289
309
319

240
270
310
340
360
430
520
610
700

108
121
143
153
164
195
236
278
320

410
460
510
550
600
690
850
960
1100

188
209
230
251
272
313
386
437
489

13.8

225
250
300
350
400
450
500
600

15.5
17.2
20.7
24.1
27.6
31.0
34.5
41.4

56
63
72
77
78
83
87
94

25.6
28.7
32.9
34.8
35.6
37.6
39.6
42.5

97
100
110
120
130
130
140
140

44.2
46.1
51.2
55.1
58
59.9
61.8
65.9

200
220
270
290
330
360
360
400

89
99.7
121
131
152
162
162
182

340
360
410
480
520
540
570
630

155
165
186
217
238
248
257
288

390
440
510
580
650
640
670
690

178
200
231
263
294
293
303
312

660
730
870
1000
1100
1100
1100
1100

299
331
395
458
521
508
496
483

440
490
560
650
740
810
880
1000

200
222
253
296
338
369
400
473

760
830
960
1100
1300
1400
1400
1600

344
375
438
512
575
616
657
740

20.7

350
400
450
500
550
600

24.1
27.6
31.0
34.5
37.9
41.4

98
110
110
120
130
130

44.4
48.5
51.4
54.4
57.4
60.4

160
170
180
190
200
210

74.9
78.8
82.7
86.6
90.5
94.5

340
410
430
480
500
550

155
188
198
219
229
250

580
680
720
770
810
860

265
308
328
348
369
389

610
630
750
840
960
1100

278
287
341
384
437
479

970
990
1200
1300
1500
1700

443
451
526
600
674
759

780
900
1000
1100
1300
1400

356
409
462
515
579
632

1400 620
1600 715
1800 800
1900 884
2100 968
2300 1040

15

15 to 100 /
1.0 to 6.9

50

100

125

80 to 300 /
5.5 to 20.7

200

300

REGULATOR BODY SIZE, IN. / DN
1/2 / 15

3/4 / 20

1 / 25

Droop

Droop

Droop

Droop

10%

1. Capacities are based in lbs/h / kg/h of saturated steam.

22

1/4 NPT

20%

10%

20%

10%

20%

10%

20%

Bulletin 71.1:MR95
Table 19. Steam Capacities(1) for 1-1/2 through 2 in. / DN 40 through 50 Type MR95HT Regulators with Metal Diaphragm
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

PRESSURE
Outlet/
Differential
Setting
psig

bar

20%

40%

10%

20%

40%

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

lb/h

kg/h

30
40
50
75
100
150
200
250
300
400
500
600
60
75
100
150
200
250
300
400
500
600

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4
4.1
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4

160
200
240
330
430
470
500
540
580
430
300
430
450
570
760
1100
1300
1600
1900
1800
1600
1000

73.4
91
109
150
196
212
229
246
264
193
135
193
204
257
346
486
607
747
886
812
740
475

240
300
370
510
630
780
890
850
850
660
460
540
850
1100
1400
2000
2600
2700
2900
2700
2600
2100

110
138
168
233
285
353
405
387
387
299
211
246
388
495
654
915
1180
1240
1330
1230
1160
950

440
520
590
820
1100
1200
1300
1300
1400
1400
1400
1400
1500
1900
2500
3100
3800
3800
3800
3800
3800
3800

200
235
270
375
479
547
598
598
615
615
615
615
696
873
1140
1430
1720
1720
1710
1710
1710
1720

160
230
290
430
590
1700
2800
1700
1400
1400
1400
1400
530
770
1100
3100
5100
3600
3600
3600
3600
3600

73.4
104
134
197
267
760
1250
792
615
615
615
615
241
349
492
1400
2320
1640
1630
1620
1620
1620

270
370
480
1000
1600
2300
3100
3100
3200
3200
3200
3200
970
1600
2600
3900
5500
6200
7000
7000
7000
7000

123
169
217
465
729
1060
1410
1430
1440
1440
1440
1440
443
715
1160
1790
2500
2840
3180
3170
3170
3170

520
720
910
1500
2100
2600
3100
3100
3200
3200
3200
3200
1800
2300
3000
4300
5800
6200
7000
7000
7000
7000

237
326
414
678
940
1160
1410
1420
1440
1440
1440
1440
803
1030
1370
1960
2650
2830
3180
3170
3170
3160

6.9

125
150
200
250
300
400
500
600

8.6
10.3
13.8
17.2
20.7
27.6
34.5
41.4

1200
1500
2200
2300
2600
2700
2800
3200

536
698
981
1060
1170
1210
1260
1430

2300
3000
4400
4400
4300
4700
4700
5100

1030
1370
1990
1980
1970
2130
2130
2300

3400
4000
5500
5900
6700
6600
7000
7000

1570
1810
2520
2680
3030
3010
3180
3170

1600
2900
5400
7000
8400
9000
9000
8900

739
1320
2480
3170
3830
4100
4080
4070

3000
3900
5600
7000
8500
9000
9000
8900

1380
1790
2530
3200
3850
4090
4070
4060

3500
4200
5700
7100
8500
9300
9300
9300

1570
1930
2600
3250
3880
4250
4240
4230

8.6

150
175
200
225
250
300
400
500
600

10.3
12.1
13.8
15.5
17.2
20.7
27.6
34.5
41.4

940
1100
1200
1400
1500
1700
2100
2500
2900

426
497
568
620
690
795
967
1120
1330

1500
1800
2000
2200
2400
2700
3500
4300
4700

682
806
930
1020
1090
1220
1590
1960
2130

2900
3300
3800
4000
4300
5100
5500
6200
7000

1300
1510
1720
1800
1980
2320
2490
2830
3180

1100
1200
1400
1600
1900
2400
2900
3300
3600

481
552
641
747
872
1100
1310
1500
1650

1900
2300
2700
3500
4400
5900
7100
8200
9400

848
1040
1220
1580
1990
2700
3220
3730
4250

3700
4400
5200
5900
6700
8300
9000
10,000
11,000

1660
2000
2350
2700
3050
3750
4090
4600
4940

13.8

225
250
300
350
400
450
500
600

15.5
17.2
20.7
24.1
27.6
31.0
34.5
41.4

1600
1800
2300
2600
2800
3100
3400
3900

724
831
1050
1170
1290
1430
1550
1790

2800
3100
3800
4400
4800
5200
5500
6700

1260
1400
1720
2000
2170
2340
2520
3040

5200
5600
6800
7500
8300
9100
9800
11,000

2380
2550
3080
3420
3770
4110
4460
4980

1800
2000
2500
2900
3200
3500
3800
4300

798
905
1140
1310
1450
1590
1710
1970

3500
4000
6000
7200
8400
9100
9900
11,000

1570
1840
2740
3270
3800
4140
4490
5180

5800
6600
8200
9700
11,000
12,000
13,000
14,000

2650
3020
3720
4400
4840
5370
5710
6400

17.2

275
300
350
400
450
500
550
600

19.0
20.7
24.1
27.6
31.0
34.5
37.9
41.4

2200
2600
3000
3400
3800
4400
4400
4400

984
1170
1340
1540
1730
2000
1990
1980

3800
4500
4800
5600
6400
6800
7100
7500

1740
2030
2200
2550
2900
3070
3240
3420

6400
7600
8400
9500
10,000
11,000
12,000
13,000

2920
3460
3810
4330
4680
5200
5550
5890

2100
2600
3300
3700
4000
4800
4800
5200

947
1170
1490
1680
1820
2180
2170
2350

4500
5300
7200
8400
9200
10,000
11,000
11,000

2030
2390
3290
3830
4170
4700
4870
5210

7000
7800
9200
10,000
11,000
12,000
13,000
14,000

3190
3570
4170
4690
5220
5560
6080
6430

3.4

250

10%
kg/h

50

200

Droop

lb/h

15 to 100 /
1.0 to 6.9

60 to 260 /
4.1 to 17.9

2 / 50

Droop

bar

1.0

125

Inlet

psig

15

100

REGULATOR BODY SIZE, IN. / DN
1-1/2 / 40

1. Capacities are based in lbs/h / kg/h of saturated steam.
- Denotes capacities limited by boost.

23

Bulletin 71.1:MR95
Table 20. Water Capacities(1)(2) in GPM / L/min for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Types MR95L and
MR95LD Regulators with Elastomer Diaphragm
PRESSURE
RECOMMENDED
OUTLET/
Outlet/
DIFFERENTIAL
Differential
Inlet
PRESSURE
Setting
RANGE,
psig/psi / bar
psig bar psig bar

2 to 6 /
0.14 to 0.41

5

10

15

20

30

Droop
20%

10%

20%

4.5
8.0
9.7
13.0
15.2
18.9
19.8
20.7
22.5
10.0
11.7
15.0
18.5
21.6
23.4
25.2
28.8
10.0
12.7
18.0
20.7
23.4
25.2
27.0
30.6

17.0
30.3
36.6
49.2
57.4
71.5
74.9
78.3
85.1
37.8
44.1
56.7
69.8
81.7
88.5
95.3
109
37.8
47.9
68.1
78.3
88.5
95.3
102
116

10.0
14.0
15.3
18.0
20.7
22.5
23.9
25.2
25.2
16.0
18.0
22.0
26.1
28.8
30.2
31.5
34.2
15.0
19.0
27.0
30.6
34.2
36.9
39.6
40.5

37.8
53.0
58.0
68.1
78.5
85.1
90.2
95.3
95.3
60.5
68.1
83.2
98.7
109
114
119
129
56.7
71.9
102
116
129
140
150
153

6.0
10.0
10.9
12.7
16.9
21.0
22.0
23.0
25.0
10.0
12.3
17.0
20.5
24.0
26.0
28.0
32.0
10.0
13.3
20.0
23.0
26.0
28.0
30.0
34.0

22.7
37.8
41.2
48.0
63.7
79.4
83.2
87.0
94.6
37.8
46.7
64.3
77.6
90.8
98.4
106
121
37.8
50.4
75.7
87.0
98.4
106
113
129

11.0
15.2
17.2
21.1
23.1
25.0
26.5
28.0
28.0
16.0
19.3
26.0
29.0
32.0
33.5
35.0
38.0
15.0
20.0
30.0
34.0
38.0
41.0
44.0
45.0

41.6
57.5
64.9
79.8
87.2
94.6
100
106
106
60.5
73.1
98.4
110
121
127
132
144
56.7
75.7
113
129
144
155
166
170

37.8
43.5
49.2
54.9
60.5
62.4
64.3
68.1

12.0
13.5
17.0
18.5
21.0
25.2
29.7
30.6

45.4
51.1
64.3
69.8
79.4
95.3
112
116

19.0
21.2
26.0
29.3
32.0
37.8
42.3
45.0

71.9
80.0
98.4
111
121
143
160
170

12.0
15.0
18.0
20.5
23.0
28.0
33.0
34.0

45.4
56.7
68.1
77.6
87.0
106
125
129

19.0
23.5
28.0
32.5
37.0
42.0
47.0
50.0

71.9
88.9
106
123
140
159
178
189

45.4
53.0
60.5
68.1
73.8
79.4
83.2

16.0
18.0
22.0
26.0
31.5
37.8
37.8

60.5
68.1
83.2
98.4
119
143
143

26.0
29.0
34.0
39.0
44.6
49.5
52.2

98.4
110
129
148
169
187
197

17.0
19.0
23.5
28.0
35.0
42.0
42.0

64.3
71.9
88.9
106
132
159
159

27.0
29.0
36.5
44.0
49.5
55.0
58.0

102
110
138
166
187
208
219

6.0
7.0
7.3
8.0
8.5
9.0

22.7
26.5
27.7
30.3
32.2
34.0

2.0
3.3
6.0
6.0
6.0

7.6
12.6
22.7
22.7
22.7

4.0
5.7
9.0
9.0
9.0

15.1
21.4
34.0
34.0
34.0

5.0
5.7
7.0
7.5
8.0
8.5

18.9
21.4
26.5
28.4
30.3
32.2

8.0
9.0
11.0
11.5
12.0
12.0

30.3
34.0
41.6
43.5
45.4
45.4

2.0
3.7
7.0
10.5
14.0
14.0

7.6
13.9
26.5
39.7
53.0
53.0

4.0
6.0
10.0
12.5
15.0
15.0

15.1
22.7
37.8
47.3
56.7
56.7

5.0
6.0
8.0
8.5
9.0
10.0
11.0

18.9
22.7
30.3
32.2
34.0
37.8
41.6

8.0
9.7
13.0
14.0
15.0
15.0
15.0

30.3
36.6
49.2
53.0
56.7
56.7
56.7

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2

2.9
4.3
5.7
8.6
11.4
11.4
11.4

10.8
16.2
21.6
32.3
43.1
43.1
43.1

4.8
6.7
8.6
11.4
14.3
14.3
14.3

18.0
25.2
32.3
43.1
53.9
53.9
53.9

6.0
7.0
8.0
9.5
11.0
11.5
12.0
12.0

22.7
26.5
30.3
35.9
41.6
43.5
45.4
45.4

10.0
11.5
13.0
14.5
16.0
16.5
17.0
18.0

2.8
3.4
5.2
6.9
10.3
13.8
17.2

4.4
5.7
8.6
11.4
13.3
15.2
17.1

16.5
21.6
32.3
43.1
50.3
57.5
64.7

6.6
7.6
10.5
13.3
14.7
16.2
18.1

25.1
28.8
39.5
50.3
55.7
61.1
68.3

7.5
9.0
10.5
12.0
13.0
14.0
14.0

28.4
34.0
39.7
45.4
49.2
53.0
53.0

12.0
14.0
16.0
18.0
19.5
21.0
22.0

1. To obtain capacities for regulators with metal diaphragms, multiply the table values by 0.8.
2. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.
- Capacities not tested due to cavitation regime.

24

10%

GPM l/min GPM l/min GPM l/min GPM l/min GPM l/min GPM l/min GPM l/min GPM l/min
11.3
15.1
17.7
22.7
22.7
22.7

2.1

1 / 25

Droop
20%

3.0
4.0
4.7
6.0
6.0
6.0

40
50
75
100
150
200
250

13 to 30 /
0.90 to 2.1

10%

15.1
18.9
25.2
37.8
37.8
18.9

1.4

1.0

Droop
20%

4.0
5.0
6.7
10.0
10.0
5.0

30
40
50
75
100
150
200
250

5 to 15 /
0.34 to 1.0

Droop
10%

3/4 / 20

14.4
18.9
22.7
30.3
30.3
15.1

0.69
1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2
1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2
1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2

0.69

1/2 / 15

3.8
5.0
6.0
8.0
8.0
4.0

10
20
30
50
75
100
150
200
250
20
30
50
75
100
150
200
250
20
30
50
75
100
150
200
250

0.34

REGULATOR BODY SIZE, IN. / DN
1/4 NPT

Bulletin 71.1:MR95
Table 21. Water Capacities(1)(2) in GPM / L/min for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Types MR95H and
MR95HD Regulators with Elastomer Diaphragm
PRESSURE
RECOMMENDED
OUTLET/
Outlet/
DIFFERENTIAL
Differential
Inlet
PRESSURE
Setting
RANGE,
psig/psi / bar
psig bar psig bar

15

50

100

Droop
20%

10%

1 / 25

Droop
20%

10%

Droop
20%

10%

20%

GPM l/min GPM l/min GPM l/min GPM l/min GPM l/min GPM l/min GPM l/min GPM l/min

1.0

1.0
1.5
2.0
3.0
4.0
4.0

3.8
5.7
7.6
11.3
15.1
15.1

3.0
3.5
4.0
6.0
8.0
8.0

11.3
13.2
15.1
22.7
30.3
30.3

4.0
4.5
5.0
6.0
7.0
9.0
11.0
12.0
13.0

15.1
17.0
18.9
22.7
26.5
34.0
41.6
45.4
49.2

7.0
8.0
9.0
10.0
11.0
13.0
15.0
16.0
17.0

26.5
30.3
34.0
37.8
41.6
49.2
56.7
60.5
64.3

7.0
8.5
10.0
11.5
13.0
14.5
16.0
17.0

26.5
32.2
37.8
43.5
49.2
54.9
60.5
64.3

12.0
13.5
15.0
17.0
19.0
20.0
21.0
22.0

45.4
51.1
56.7
64.3
71.9
75.7
79.4
83.2

8.0
10.0
12.0
12.0
12.0
17.0
22.0
23.0

30.3
37.8
45.4
45.4
45.4
64.3
83.2
87.0

15.0
19.0
23.0
24.0
25.0
30.5
36.0
37.0

56.7
71.9
87.0
90.8
94.6
115
136
140

2.1

40
50
75
100
150
200
250
300

2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

2.0
3.0
4.5
6.0
7.6
8.9
9.8
10.6

7.5
11.3
17.0
22.7
28.9
33.6
37.2
40.1

4.3
6.0
8.5
11.0
13.7
15.8
17.4
18.7

16.2
22.7
32.2
41.6
51.9
59.7
65.8
70.7

6.0
7.0
8.5
10.0
11.0
12.0
13.5
15.0

22.7
26.5
32.2
37.8
41.6
45.4
51.1
56.7

10.0
12.0
14.5
17.0
18.0
19.0
19.5
20.0

37.8
45.4
54.9
64.3
68.1
71.9
73.8
75.7

10.0
12.0
14.5
17.0
18.5
20.0
20.5
21.0

37.8
45.4
54.9
64.3
70.0
75.7
77.6
79.4

18.0
20.0
23.5
27.0
29.0
31.0
32.0
33.0

68.1
75.7
88.9
102
110
117
121
125

12.0
15.0
21.0
27.0
29.0
31.0
38.0
45.0

45.4
56.7
79.4
102
110
117
144
170

23.0
26.0
36.0
46.0
48.0
50.0
57.5
65.0

87.0
98.4
136
174
182
189
218
246

3.4

60
75
100
150
200
250
300

4.1
5.2
6.9
10.3
13.8
17.2
20.7

3.0
4.0
5.0
6.5
8.0
8.8
9.5

11.4
15.1
18.9
24.6
30.3
33.1
35.9

4.5
6.0
9.0
11.5
14.0
15.7
17.2

17.1
22.7
34.0
43.5
53.0
59.5
65.0

6.8
8.0
9.0
10.0
11.0
12.5
14.0

25.7
30.3
34.0
37.8
41.6
47.3
53.0

13.1
14.0
17.0
18.0
19.0
21.0
23.0

49.5
53.0
64.3
68.1
71.9
79.4
87.0

13.3
14.0
18.0
21.0
24.0
24.5
25.0

50.3
53.0
68.1
79.4
90.8
92.7
94.6

22.8
24.0
29.0
34.0
39.0
39.0
39.0

86.4
90.8
110
129
148
148
148

17.0
18.0
25.0
27.0
29.0
36.0
43.0

64.3
68.1
94.6
102
110
136
163

30.0
31.0
41.0
48.0
55.0
61.0
67.0

113
117
155
182
208
231
253

5.2

100
125
150
200
250
300

6.9
8.6
10.3
13.8
17.2
20.7

5.0
6.0
7.0
9.0
10.1
11.2

18.9
22.7
26.5
34.0
38.4
42.4

8.0
9.5
11.0
14.0
15.7
17.3

30.3
35.9
41.6
53.0
59.4
65.4

10.0
11.3
12.5
15.0
15.5
16.0

37.8
42.6
47.3
56.7
58.6
60.5

18.0
19.5
21.0
24.0
25.0
26.0

68.1
73.8
79.4
90.8
94.6
98.4

18.0
20.5
23.0
28.0
30.0
32.0

68.1
77.6
87.0
106
113
121

30.0
33.3
36.5
43.0
46.5
50.0

113
126
138
163
176
189

22.0
27.5
33.0
44.0
46.5
49.0

83.2
104
125
166
176
185

38.0
46.3
54.5
71.0
74.0
77.0

144
175
206
269
280
291

6.9

125
150
175
200
250
300

8.6
10.3
12.1
13.8
17.2
20.7

4.0
5.0
6.0
7.0
8.3
9.5

15.1
18.9
22.7
26.5
31.5
35.9

7.0
9.0
11.0
13.0
15.7
18.0

26.5
34.0
41.6
49.2
59.3
68.1

8.3
10.5
11.6
12.8
13.5
14.3

31.2
39.7
44.0
48.2
51.1
53.9

14.3
18.0
20.3
22.5
22.5
22.5

53.9
68.1
76.6
85.1
85.1
85.1

19.0
23.0
26.0
29.0
31.0
33.0

71.9
87.0
98.4
110
117
125

31.0
37.0
40.5
44.0
47.5
51.0

117
140
153
166
180
193

22.0
28.0
33.0
38.0
43.0
48.0

83.2
106
125
144
163
182

37.0
46.0
54.0
62.0
73.0
84.0

140
174
204
235
276
318

10.3

175
200
225
250
300

12.1
13.8
15.5
17.2
20.7

5.0
7.0
8.0
9.0
11.0

18.9
26.5
30.3
34.0
41.6

9.0
12.0
13.5
15.0
18.0

34.0
45.4
51.1
56.7
68.1

9.0
12.8
13.9
15.0
17.3

34.0
48.2
52.5
56.7
65.3

16.5
20.3
22.1
24.0
27.8

62.4
76.6
83.7
90.8
105

23.0
28.0
30.5
33.0
38.0

87.0
106
115
125
144

39.0
45.0
48.3
51.5
58.0

148
170
183
195
219

30.0
36.0
41.3
46.5
57.0

113
136
156
176
216

44.0
52.0
59.5
67.0
82.0

166
197
225
253
310

70 to 150 /
4.8 to 10.3
150

Droop
10%

3/4 / 20

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

25 to 75 /
1.7 to 5.2

75

1/2 / 15

30
40
50
75
100
150
200
250
300

15 to 30 /
1.0 to 2.1

30

REGULATOR BODY SIZE, IN. / DN
1/4 NPT

1. To obtain capacities for regulators with metal diaphragms, multiply the table values by 0.6.
2. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.
- Capacities not tested due to cavitation regime.

25

Bulletin 71.1:MR95
Table 22. Water Capacities(1) in GPM / L/min for 1-1/2 through 2 in. / DN 40 through 50 Types MR95H and MR95HD Regulators with
Elastomer Diaphragm
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

PRESSURE
Outlet/
Differential
Setting
psig

5

15

75

60 to 120 /
4.1 to 8.3

100 to 140 /
6.9 to 9.7

120 to 150 /
8.3 to 10.3

100

125

150

Inlet

Droop
10%

Droop

20%

40%

10%

20%

40%

psig

bar

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

0.34

10
20
30
50
75
100
150
200
250
300

0.69
1.4
2.1
3.4
5.2
6.9
10.3
13.8
17.2
20.7

6.0
8.5
11.0
16.0
27.5
39.0
47.0
55.0
72.5
90.0

22.7
32.2
41.6
60.5
104
148
178
208
274
340

8.0
11.3
14.5
21.0
38.0
55.0
98.5
142
159
175

30.3
42.6
54.9
79.4
144
208
373
537
600
662

14.0
19.8
25.5
37.0
52.5
68.0
119
169
174
179

53.0
74.7
96.5
140
199
257
448
639
658
677

6.0
8.3
10.5
15.0
19.0
23.0
40.5
58.0
52.5
47.0

22.7
31.2
39.7
56.7
71.9
87.0
153
219
199
178

8.0
10.5
13.0
18.0
25.0
92.0
79.0
66.0
59.5
53.0

30.3
39.7
49.2
68.1
94.6
348
299
250
225
200

14.0
17.5
21.0
28.0
37.0
114
99.5
85.0
75.0
65.0

53.0
66.2
79.4
106
140
431
376
322
284
246

1.0

30
40
50
75
100
150
200
250
300

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7

14.0
19.5
25.0
31.5
38.0
67.5
97.0
115
132

53.0
73.8
94.6
119
144
255
367
433
499

27.0
33.0
39.0
49.5
60.0
84.5
109
184
258

102
125
148
187
227
320
412
694
976

47.0
53.5
60.0
74.0
88.0
148
208
235
262

178
202
227
280
333
560
787
889
991

14.0
18.0
22.0
25.0
75.0
77.0
91.0
82.0
73.0

53.0
68.1
83.2
94.6
284
291
344
310
276

22.0
28.5
35.0
40.0
132
124
116
107
97.0

83.2
108
132
151
499
469
439
403
367

42.0
52.0
62.0
118
173
153
133
132
130

159
197
235
445
654
579
503
497
492

3.4

60
75
100
150
200
250
300

4.1
5.2
6.9
10.3
13.8
17.2
20.7

27.9
34.0
51.0
62.0
73.0
99.5
126

106
129
193
235
276
376
477

63.7
66.0
95.0
103
111
179
247

241
250
359
390
420
677
934

95.0
111
138
169
200
236
271

359
420
522
639
757
891
1030

25.5
37.0
47.0
64.0
81.0
85.0
154

96.7
140
178
242
306
322
583

50.7
68.0
82.0
108
133
140
178

192
257
310
407
503
530
673

100
127
157
198
238
267
295

378
480
594
747
900
1010
1120

5.2

100
125
150
200
250
300

6.9
8.6
10.3
13.8
17.2
20.7

47.0
55.3
63.5
80.0
87.0
94.0

178
209
240
303
329
356

84.0
94.8
106
127
189
250

318
358
399
480
713
946

129
150
171
213
241
269

488
567
647
806
912
1020

45.0
54.3
63.5
82.0
85.0
191

170
205
240
310
322
723

82.0
97.8
114
145
150
276

310
370
429
549
567
1040

138
161
184
229
260
290

522
608
694
866
982
1100

6.9

125
150
175
225
250
300

8.6
10.3
12.1
15.5
17.2
20.7

47.0
55.8
64.5
82.0
88.3
101

178
211
244
310
334
382

92.0
107
122
151
154
159

348
404
460
571
581
601

135
155
176
216
229
256

511
587
664
817
868
968

46.0
54.8
63.5
81.0
85.3
94.0

174
207
240
306
323
356

90.0
106
122
154
163
181

340
401
462
583
617
685

147
170
193
239
255
287

556
643
730
904
965
1090

8.6

150
175
200
225
250
300

10.3
12.1
13.8
15.5
17.2
20.7

43.7
55.4
67.0
74.5
82.0
97.0

165
209
253
282
310
367

86.4
105
124
139
154
184

327
398
469
526
583
696

148
168
188
204
221
253

560
636
711
773
834
957

47.0
58.5
70.0
78.3
86.5
103

178
221
265
296
327
390

91.0
110
128
142
155
182

344
414
484
535
586
689

158
183
207
224
241
275

598
690
783
847
912
1040

10.3

175
200
225
250
300

12.1
13.8
15.5
17.2
20.7

40.0
52.0
59.5
67.0
82.0

151
197
225
253
310

79.0
98.0
108
118
138

299
371
409
446
522

145
169
188
206
243

549
639
709
779
919

42.0
56.0
63.8
71.5
87.0

159
212
241
270
329

90.0
108
121
135
161

340
409
459
509
609

169
198
215
232
265

639
749
812
876
1000

1. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.
- Denotes capacities limited by boost.

26

2 / 50

bar

5 to 80 /
0.34 to 5.5

50

REGULATOR BODY SIZE, IN. / DN
1-1/2 / 40

Bulletin 71.1:MR95
Table 23. Water Capacities(1)(2) in GPM / L/min for 1/4 NPT and 1/2 through 1 in. / DN 15 through 25 Type MR95HP
(Elastomer Diaphragm) Regulator
PRESSURE
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE RANGE,
psig/psi / bar

Outlet/
Differential
Setting
psig

3/4 / 20

1 / 25

Droop

Droop

Droop

Droop

10%

20%

10%

20%

10%

20%

10%

20%

psig

bar

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

1.0

30
40
50
75
100
150
200
250
300
400
500
600
1000

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0

0.8
1.3
1.8
2.2
2.5
2.9
3.3
3.6
3.9

3.0
4.9
6.8
8.1
9.5
11.0
12.5
13.6
14.8

1.3
1.9
2.5
3.3
4.1
4.6
5.0
5.3
5.6

4.9
7.2
9.5
12.5
15.5
17.2
18.9
20.0
21.2

2.4
2.9
3.4
4.3
5.1
5.8
6.5
7.6
8.7

9.1
11.0
12.9
16.1
19.3
21.9
24.6
28.8
32.9

3.7
4.3
4.9
6.1
7.2
8.1
9.0
10.2
11.3

14.0
16.3
18.5
22.9
27.2
30.6
34.0
38.4
42.7

6.0
6.5
7.0
8.5
10.0
11.5
13.0
14.0
15.0
16.8

22.7
24.6
26.5
32.2
37.8
43.5
49.2
53.0
56.7
63.6

8.0
8.5
9.0
11.5
14.0
15.5
17.0
18.0
19.0
19.0

30.3
32.2
34.0
43.5
53.0
58.6
64.3
68.1
71.9
71.9

6.0
7.0
8.0
9.5
11.0
13.5
16.0
18.5
21.0
24.0

22.7
26.5
30.3
35.9
41.6
51.1
60.5
70.0
79.4
90.8

10.0
11.0
12.0
13.5
15.0
20.0
25.0
30.7
36.4
37.0

37.8
41.6
45.4
51.1
56.7
75.7
94.6
116
138
140

5.2

100
125
150
200
250
300
400
500
600
1000

6.9
8.6
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0

4.2
5.5
6.7
9.2
10.2
11.1
12.5
13.0
14.0

15.9
20.6
25.3
34.8
38.4
42.0
47.3
49.2
53.0

7.0
8.5
10.0
12.9
14.7
16.4
17.0
18.0
18.0

26.5
32.1
37.6
48.8
55.4
62.0
64.3
68.1
68.1

8.0
9.0
10.0
12.0
13.0
14.0
14.5
15.0
15.0

30.3
34.0
37.8
45.4
49.2
53.0
54.9
56.7
56.7

14.0
15.5
17.0
20.0
21.5
23.0
23.0
23.0
23.0

53.0
58.6
64.3
75.7
81.3
87.0
87.0
87.0
87.0

16.0
18.0
20.0
24.0
26.5
29.0
30.3
30.3
30.3

60.5
68.1
75.7
90.8
100
110
115
115
115

25.0
28.8
32.5
40.0
43.0
46.0
53.0
53.0
53.0

94.6
109
123
151
163
174
200
200
200

18.0
21.5
25.0
32.0
35.5
39.0
41.0
41.0
41.0

68.1
81.3
94.6
121
134
148
155
155
155

31.0
37.3
43.5
56.0
62.5
69.0
80.0
80.0
80.0

117
141
165
212
236
261
303
303
303

6.9

125
150
175
200
250
300
400
500
600
1000

8.6
10.3
12.1
13.8
17.2
20.7
27.6
34.5
41.4
69.0

4.9
6.17
7.43
8.7
10.3
11.9
14.2
16
17.4

18.5
23.3
28.1
32.9
39.0
45.0
53.6
60.4
65.9

7.0
8.9
10.9
12.8
14.9
17.0
20.4
23.0
25.1

26.5
33.8
41.1
48.4
56.4
64.3
77.2
86.9
94.9

9.0
10.7
12.3
14.0
15.0
16.0
16.0
16.0
18.0
18.0

34.0
40.4
46.7
53.0
56.7
60.5
60.5
60.5
68.1
68.1

16.0
18.0
20.0
22.0
23.5
25.0
26.0
27.0
28.0
28.0

60.5
68.1
75.7
83.2
88.9
94.6
98.4
102
106
106

19.0
22.7
26.3
30.0
31.0
32.0
33.5
37.1
37.1
37.1

71.9
85.7
99.6
113
117
121
127
140
140
140

32.0
36.7
41.3
46.0
50.0
54.0
56.7
59.5
59.5
59.5

121
139
156
174
189
204
214
225
225
225

21.0
26.7
32.3
38.0
42.0
46.0
51.5
57.0
57.0
57.0

79.4
101
122
144
159
174
195
216
216
216

36.0
44.0
52.0
60.0
68.5
77.0
81.0
85.0
85.0
85.0

136
166
197
227
259
291
306
322
322
322

8.6

150
175
200
225
250
300
400
500
600
1000

10.3
12.1
13.8
15.5
17.2
20.7
27.6
34.5
41.4
69.0

1.9
2.4
2.9
3.2
3.5
4.1
5.0
5.7
6.3

7.2
9.1
11.0
12.1
13.2
15.5
18.9
21.6
23.8

3.5
4.1
4.7
5.2
5.6
6.5
7.7
8.6
9.4

13.2
15.5
17.8
19.5
21.2
24.6
29.0
32.6
35.6

6.0
7.0
8.0
8.8
9.5
11.0
11.5
12.0
14.0
14.0

22.7
26.5
30.3
33.1
35.9
41.6
43.5
45.4
53.0
53.0

10.0
12.0
14.0
15.0
16.0
18.0
19.0
20.0
22.0
22.0

37.8
45.4
53.0
56.7
60.5
68.1
71.9
75.7
83.2
83.2

10.0
13.5
17.0
18.5
20.0
23.0
26.0
29.0
29.3
32.5

37.8
51.1
64.3
70.0
75.7
87.0
98.4
110
111
123

19.0
24.0
29.0
31.0
33.0
37.0
39.5
42.0
43.2
51.0

71.9
90.8
110
117
125
140
149
159
163
193

12.0
16.0
20.0
22.0
24.0
28.0
36.0
44.0
45.0
50.0

45.4
60.5
75.7
83.2
90.8
106
136
166
170
189

25.0
30.0
35.0
38.0
41.0
47.0
57.5
68.0
72.0
85.0

94.6
113
132
144
155
178
218
257
272
322

200

13.8

225
250
300
400
500
600
1000

15.5
17.2
20.7
27.6
34.5
41.4
69.0

2.6
3.1
4.0
5.4
6.5
7.4
9.9

9.8
11.6
15.1
20.4
24.6
27.9
37.4

5.0
5.7
7.0
9.0
10.6
11.8
15.4

18.9
21.4
26.5
34.0
39.9
44.8
58.3

8.0
9.3
12.0
15.0
18.0
19.0
20.0

30.3
35.3
45.4
56.7
68.1
71.9
75.7

15.0
17.0
21.0
25.0
29.0
31.0
32.0

56.7
64.3
79.4
94.6
110
117
121

16.0
19.0
25.0
29.5
34.0
37.0
40.0

60.5
71.9
94.6
112
129
140
151

30.0
34.7
44.0
49.0
54.0
57.0
60.0

113
131
166
185
204
216
227

19.0
23.0
31.0
37.5
44.0
45.0
75.0

71.9
87.0
117
142
166
170
284

37.0
42.3
53.0
65.0
77.0
82.0
125

140
160
200
246
291
310
473

300

20.7

350
400
500
600
1000

24.1
27.6
34.5
41.4
69.0

4.6
5.3
6.7
7.4
9.1

17.2
19.9
25.2
27.8
34.4

8.1
9.1
11.2
12.3
15.8

30.5
34.4
42.4
46.3
59.6

13.0
15.0
19.0
21.0
26.0

49.2
56.7
71.9
79.4
98.4

23.0
26.0
32.0
35.0
45.0

87.0
98.4
121
132
170

24.0
28.0
36.0
42.0
50.0

90.8
106
136
159
189

44.0
49.0
59.0
65.0
77.0

166
185
223
246
291

27.0
33.0
45.0
59.0
70.0

102
125
170
223
265

53.0
63.3
84.0
98.0
127

200
240
318
371
480

400

27.6

500
600
1000

34.5
41.4
69.0

6.7
7.7
10.6

25.2
29.1
40.3

11.2
13.0
17.9

42.4
49.0
67.5

19.0
22.0
30.4

71.9
83.2
115

32.0
37.0
51.0

121
140
193

32.0
40.0
53.0

121
151
200

55.0
65.0
84.0

208
246
318

43.0
52.0
84.0

163
197
318

73.0
92.0
135

276
348
511

75

100

125

80 to 300 /
5.5 to 20.7

80 to 400 /
5.5 to 27.6
Type MR95HP Only

Inlet

1/2 / 15

bar

15

15 to 100 /
1.0 to 6.9

REGULATOR BODY SIZE, IN. / DN
1/4 NPT

1. To obtain capacities for regulators with metal diaphragms or for Type MR95HT, multiply the table values by 0.6. Capacity data for 1000 psig / 69.0 bar inlet is not applicable for
Type MR95HT (Type MR95HT max. inlet = 600 psig / 41.4 bar).
2. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.
- Capacities not tested due to cavitation regime.

27

Bulletin 71.1:MR95
Table 24. Water Capacities(1)(2) in GPM / L/min for 1-1/2 through 2 in. / DN 40 through 50 Type MR95HP (Elastomer Diaphragm) Regulator
RECOMMENDED
OUTLET/
DIFFERENTIAL
PRESSURE
RANGE,
psig/psi / bar

PRESSURE
Outlet/
Differential
Setting
psig

15

15 to 100 /
1.0 to 6.9

60 to 260 /
4.1 to 17.9

60 to 300 /
4.1 to 20.7
Type MR95HP Only

50

bar

1.0

3.4

100

6.9

125

8.6

200

13.8

250

17.2

300

20.7

REGULATOR BODY SIZE, IN. / DN
1-1/2 / 40
Inlet

2 / 50

Droop
10%

Droop

20%

40%

10%

20%

40%

psig

bar

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

GPM

l/min

30
40
50
75
100
150
200
250
300
400
500
600
1000
60
75
100
150
200
250
300
400
500
600
1000
125
150
175
200
250
300
400
500
600
1000
150
175
200
225
250
300
400
500
600
1000
225
250
300
350
400
450
500
600
1000
275
300
350
400
450
500
550
600
1000
350
400
450
500
550
600
1000

2.1
2.8
3.4
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0
4.1
5.2
6.9
10.3
13.8
17.2
20.7
27.6
34.5
41.4
69.0
8.6
10.3
12.1
13.8
17.2
20.7
27.6
34.5
41.4
69.0
10.3
12.1
13.8
15.5
17.2
20.7
27.6
34.5
41.4
69.0
15.5
17.2
20.7
24.1
27.6
31.0
34.5
41.4
69.0
19.0
20.7
24.1
27.6
31.0
34.5
37.9
41.4
69.0
24.1
27.6
31.0
34.5
37.9
41.4
69.0

12.0
15.5
19.0
23.0
27.0
41.0
55.0
76.5
98.0

45.4
58.6
71.9
87.0
102
155
208
289
371

20.0
25.0
30.0
36.5
43.0
62.0
81.0
148
215

75.7
94.6
113
138
163
235
306
560
813

36.0
41.5
47.0
59.5
72.0
134
195
217
238

136
157
178
225
272
505
738
819
900

11.0
15.5
20.0
22.5
25.0
35.0
45.0
98.0
98.0

41.6
58.6
75.7
85.1
94.6
132
170
371
371

18.0
23.0
28.0
32.0
36.0
139
242
115
115

68.1
87.0
106
121
136
526
915
435
435

33.0
40.5
48.0
59.0
70.0
158
245
132
132

125
153
182
223
265
596
927
499
499

19.0
26.9
40.0
53.0
66.0
86.5

71.9
102
151
200
250
327

39.0
49.9
68.0
85.5
103
147

148
189
257
323
390
554

75.7
103
148
212
276
516

41.0
54.5
77.0
144
211
231

155
206
291
545
798
872

405
405
405
405

190
190
190
190

719
719
719
719

306
382
507
651
794
908
1020

20.0
27.1
39.0
56.0
73.0
137

107.0
107.0
107.0
107.0

81.0
101
134
172
210
240
270

1020
1020
1020

757
757
757
757

250
250
250
250

946
946
946
946

344
424
556
724
893
1000
1110

270
270
270

200
200
200
200

91.0
112
147
192
236
265
294
294
294
294

1110
1110
1110

41.0
52.3
63.7
75.0
83.5
92.0
111
125
135
166
28.0
36.5
45.0
51.0
57.0
69.0
75.0
90.0
100
105
38.0
47.7
67.0
70.3
73.5
76.8
80.0
85.0
105
43.0
50.0
55.8
61.7
67.5
73.3
79.2
85.0
95.0
55.0
68.0
79.0
90.0
92.5
95.0
125

155
198
241
284
316
348
422
471
512
626
106
138
170
193
216
261
284
340
378
397
144
180
253
266
278
290
303
322
397
163
189
211
233
255
277
299
322
359
208
257
299
340
350
359
473

78.0
95.7
113
131
145
158
180
200
200
200
55.0
66.5
78.0
85.5
93.0
108
125
140
145
150
76.0
90.0
118
121
124
127
130
135
150
91.0
101
108
114
121
127
134
140
155
110
125
135
145
148
150
190

295
362
429
496
547
598
681
757
757
757
208
252
295
323
352
409
473
530
549
567
288
340
446
458
469
480
492
511
567
344
382
407
431
456
480
505
530
586
416
473
511
549
558
567
719

138
159
181
202
234
265
265
265
265
265
111
131
151
168
186
220
250
266
276
285
160
179
217
220
226
231
237
246
273
185
203
204
217
229
241
254
266
295
209
238
257
276
280
285
361

522
603
683
764
883
1000
1000
1000
1000
1000
420
496
571
636
702
832
946
1010
1040
1080
605
677
821
833
854
874
895
929
1030
700
768
773
819
866
913
960
1010
1110
791
898
970
1040
1060
1080
1370

42.0
57.3
72.7
88.0
136
183
183
183
183
183
31.0
38.0
45.0
50.8
56.5
68.0
78.8
94.5
105
110
31.0
42.0
64.0
73.8
77.2
80.6
84.0
89.3
110
45.0
56.0
58.6
64.8
70.9
77.0
83.1
89.3
99.8
57.8
71.4
83.0
94.5
97.1
99.8
131

159
217
275
333
513
692
692
692
692
692
117
144
170
192
214
257
298
357
397
417
117
159
242
279
292
305
318
338
417
170
212
222
245
268
291
314
338
377
218
270
314
357
367
377
497

91.0
117
144
170
219
267
267
267
267
267
56.0
70.0
84.0
93.3
103
121
138
154
160
165
69.0
86.0
120
133
136
140
143
149
165
95.0
110
118
125
133
140
147
154
171
121
138
149
160
162
165
209

344
444
543
643
827
1010
1010
1010
1010
1010
212
265
318
353
388
458
520
583
603
624
261
325
454
504
516
528
541
562
624
359
416
447
474
501
528
556
583
645
458
520
562
603
614
624
791

146
169
192
215
247
279
279
279
279
279
119
144
169
188
207
245
275
293
303
314
154
178
226
242
248
254
260
270
300
194
219
225
238
252
265
279
293
324
230
261
282
303
308
314
397

552
639
726
813
934
1060
1060
1060
1060
1060
450
545
639
711
783
927
1040
1110
1150
1190
583
673
855
916
939
962
985
1020
1140
734
828
850
901
953
1000
1060
1110
1230
870
988
1070
1150
1170
1190
1500

1. To obtain capacities for Type MR95HT (metal diaphragm), multiply the table values by 0.6. Capacity data for 1000 psig / 69.0 bar inlet is not applicable for Type MR95HT (Type MR95HT
max. inlet = 600 psig / 41.4 bar).
2. To obtain capacities for regulators with reduced flow orifices, multiply the table values by 0.7.
- Denotes capacities limited by boost.
- Capacities not tested due to cavitation regime.

28

Bulletin 71.1:MR95
ØC
ØJ

ØC

ØC

1/4
NPT*

D
(MAX)

1/4
NPT*

D
(MAX)

D
(MAX)
1/4
NPT

FLANGE

NPT
OR SWE

NPT
OR SWE

B

B

B
A

ERAA03807

14.00 / 355.6

ERAA03811

TYPE MR95H (DIMENSION ALSO APPLY)
TO TYPES MR95L, MR95HT AND MR95HP

ERAA03809

TYPE MR95H FLANGED BODIES AVAILABLE IN 1/2 TO 2 IN. /
DN 15 TO 50 BODY SIZES (DIMENSIONS ALSO APPLY
TO TYPES MR95L, MR95HT AND MR95HP)

Ø3.50 /
88.9

A

TYPE MR95HD (DIMENSIONS ALSO
APPLY TO TYPE MR95LD)

G
ØE

ERAA03812

*Only when specified

ERAA03808

ERAA03810

F

TEE HANDLE DETAIL FOR ALL SIZES
EXCEPT 1/2 IN. / DN 15

HANDLE DETAIL FOR SIZE
1/2 IN. / DN 15 ONLY

IN. /
mm

SWE DETAIL

Figure 3. Dimensions Drawing
Table 25. Dimensions
TYPE MR95L
Body size,
IN. / dn

A
Gray Cast Iron

B

Steel/SST

C

SWE

D (Max)

Tee Handle

E

F

G

In.

mm

In.

mm

In.

mm

In.

mm

In.

mm

In.

mm

In.

mm

In.

mm

1/4 NPT

2.75

69.9

2.75

69.9

2.04

51.9

5.06

128.5

6.17

156.7

----

----

----

----

3.00

76.2

1/2 / 15

3.88

98.6

4.00

101.6

1.85

47.1

7.00

177.8

7.84

199.2

0.86

21.8

0.38

9.7

----

----

3/4 / 20

4.88

124.0

5.00

127.0

2.27

57.6

10.19

258.8

9.86

250.4

1.07

27.2

0.50

12.7

5.00

127.0

1 / 25

4.88

124.0

5.00

127.0

2.27

57.6

10.19

258.8

9.86

250.4

1.34

34.0

0.50

12.7

5.00

127.0

TYPES MR95h, MR95HT AND MR95HP
1/4 NPT

2.75

69.9

2.75

69.9

2.04

51.9

3.19

81.0

6.36

161.5

----

----

----

----

3.00

76.2

1/2 / 15

3.88

98.6

4.00

101.6

1.85

47.1

4.25

108.0

8.29

210.6

0.86

21.8

0.38

9.7

----

----

3/4 / 20

4.88

124.0

5.00

127

2.27

57.6

6.06

154.0

10.21

259.4

1.07

27.2

0.50

12.7

5.00

127.0

1 / 25

4.88

124.0

5.00

127

2.27

57.6

6.06

154.0

10.21

259.4

1.34

34.0

0.50

12.7

5.00

127.0

1-1/2 / 40

7.25

184.2

7.38

187.4

3.06

77.7

8.19

208.0

14.78

375.4

1.92

48.8

0.50

12.7

5.00

127.0

2 / 50

7.25

184.2

7.38

187.4

3.06

77.7

8.19

208.0

14.78

375.4

2.07

52.6

0.62

15.8

5.00

127.0

TYPE MR95LD
BODY SIZE,
IN. / DN

A
Gray Cast Iron

B

Steel/SST

C

SWE

D (Max)

E

J

F

In.

mm

In.

mm

In.

mm

In.

mm

In.

mm

In.

mm

In.

mm

In.

mm

1/4 NPT

2.75

69.9

2.75

69.9

2.04

51.9

5.06

128.5

10.46

265.6

----

----

----

----

4.00

101.6

1/2 / 15

3.88

98.6

4.00

101.6

1.85

47.1

7.00

177.8

11.62

295.2

0.86

21.8

0.38

9.7

4.00

101.6

3/4 / 20

4.88

124.0

5.00

127.0

2.27

57.6

10.19

258.8

13.89

352.8

1.07

27.2

0.50

12.7

4.00

101.6

1 / 25

4.88

124.0

5.00

127.0

2.27

57.6

10.19

258.8

13.89

352.8

1.34

34.0

0.50

12.7

4.00

101.6

TYPE MR95HD
1/4 NPT

2.75

69.9

2.75

69.9

2.04

51.9

3.19

81.0

10.38

263.7

----

----

----

----

4.00

101.6

1/2 / 15

3.88

98.6

4.00

101.6

1.85

47.1

4.25

108.0

11.52

292.5

0.86

21.8

0.38

9.7

4.00

101.6

3/4 / 20

4.88

124

5.00

127.0

2.27

57.6

6.06

154.0

13.76

349.4

1.07

27.2

0.50

12.7

4.00

101.6

1 / 25

4.88

124

5.00

127.0

2.27

57.6

6.06

154.0

13.76

349.4

1.34

34.0

0.50

12.7

4.00

101.6

1-1/2 / 40

7.25

184.2

7.38

187.4

3.06

77.7

8.19

208.0

18.62

472.9

1.92

48.8

0.50

12.7

8.00

203.2

2 / 50

7.25

184.2

7.38

187.4

3.06

77.7

8.19

208.0

18.62

472.9

2.07

52.6

0.62

15.8

8.00

203.2

29

Bulletin 71.1:MR95
Ordering Information
When ordering, complete the ordering guide on this page.
Refer to the Specifications section on pages 2 and 3.

Review the description to the right of each specification and
the information in each referenced table or figure. Specify
your choice whenever a selection is offered.

Ordering Guide
Type (Select One)
    MR95L (Low pressure)
    MR95LD (Low pressure differential)
    MR95H (High pressure)
   MR95HD (High pressure differential, must be Steel or
Stainless steel construction)
    MR95HP (High pressure, soft-seated)
   MR95HT (High pressure/temperature, must be Steel or
Stainless steel construction)
Body Size (Select One)
    1/4 NPT(1)
    1/2 in. / DN 15
    3/4 in. / DN 20
    1 in. / DN 25
    1-1/2 in. / DN 40 (not available for MR95L Series)
    2 in. / DN 50 (not available for MR95L Series)
Body Material and End Connection Style(2)
(See Tables 1 and 2, Select One)
  Gray Cast Iron
    NPT***
  WCC Steel
    NPT***
     SWE**
     Welded CL150 RF***
     Welded CL300 RF***
     Welded CL600 RF***
     Welded PN 16/25/40 RF***
  LCC Steel
    NPT***
     SWE**
     Welded CL150 RF***
     Welded CL300 RF***
     Welded CL600 RF***
     Welded PN 16/25/40 RF***
  CF8M Stainless steel
    NPT***
     SWE**
     Welded CL150 RF***
     Welded CL300 RF***
     Welded CL600 RF***
  CF3M Stainless steel
    NPT***
     SWE***
     Welded CL150 RF***
     Welded CL300 RF***
1. Available in threaded (NPT) end connection only.
2. Integral flanges are available for MR95H Series only.
3. Gray cast iron spring case not available for Types MR95LD and MR95HD.
Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

30

Body Material and End Connection Style(2)
(See Tables 1 and 2, Select One) (continued)
  CF3M Stainless steel (continued)
     Welded CL600 RF***
     Welded PN 16/25/40 RF***
     Integral CL150 RF*
     Integral CL300 RF*
     Integral CL600 RF*
     Integral PN 16/25/40 RF*
  Hastelloy® C
    NPT*
     Integral CL150 RF*
     Integral CL300 RF*
     Integral CL600 RF*
     Integral PN 16/25/40 RF*
  Monel®
    NPT*
     Integral CL150 RF*
     Integral CL300 RF*
     Integral CL600 RF*
     Integral PN 16/25/40 RF*
  Aluminum-Bronze
     Integral CL150 RF*
     Integral CL300 RF*
     Integral CL600 RF*
     Integral PN 16/25/40 RF*
Spring Case Material (Select One)
    Gray cast iron (standard for gray cast iron bodies)(3)***
   WCC Steel (standard for steel or
Stainless steel bodies)***
   LCC Steel***
   CF8M Stainless steel (optional for
Stainless steel bodies)**
    Hastelloy® C
    Monel®
Trim Material (See Table 7, Select One)
  Metal Seat
    416 Stainless steel
      Trim 1
      Trim 2
      Trim 22
  316 Stainless steel
      Trim 3
      Trim 23
  Hastelloy® C
      Trim 5
- continued -

Bulletin 71.1:MR95
Ordering Guide (continued)
Trim Material (See Table 7, Select One) (continued)
  Metal Seat (continued)
  Monel®
      Trim 6
  Alloy 6(1)
      Trim 4
      Trim 24
  Elastomer Seat
  Nitrile (NBR)
      Trim 7
      Trim 8
      Trim 9
      Trim 10
      Trim 11
  Fluorocarbon (FKM)
      Trim 12
      Trim 13
      Trim 14
      Trim 15
  Perfluoroelastomer (FFKM)
      Trim 16
  Polytetrafluoroethylene (PTFE)
      Trim 17
      Trim 18
      Trim 19
  Ethylenepropylene (EPDM)
      Trim 20
Diaphragm (Select One)
    Neoprene (CR)
    Fluorocarbon (FKM)
    Ethylenepropylene (EPDM)
    Monel®
    Hastelloy® C
    302 Stainless steel
    302 Stainless steel (Steam Service)(2)
Outlet or Differential Pressure Range (Select One)
  Type MR95L or MR95LD
  Steel Spring
      2 to 6 psig/psi / 0.14 to 0.41 bar, Yellow***
      5 to 15 psig/psi / 0.34 to 1.0 bar, Green***
      13 to 30 psig/psi / 0.90 to 2.1 bar, Red***
  302 Stainless steel Spring
      2 to 6 psig/psi / 0.14 to 0.41 bar, Yellow***
      5 to 15 psig/psi / 0.34 to 1.0 bar, Unpainted***
      13 to 30 psig/psi / 0.90 to 2.1 bar, Unpainted***

Outlet or Differential Pressure Range
(Select One) (continued)
  Type MR95H or MR95HD
   1/4 NPT and 1/2 to 1 in. / DN 15 to 25 body sizes
    Steel Spring
       15 to 30 psig/psi / 1.0 to 2.1 bar, Yellow***
       25 to 75 psig/psi / 1.7 to 5.2 bar, Green***
       70 to 150 psig/psi / 4.8 to 10.3 bar, Red***
    302 Stainless steel Spring(3)
       15 to 30 psig/psi / 1.0 to 2.1 bar, Yellow***
       25 to 75 psig/psi / 1.7 to 5.2 bar, Unpainted***
       70 to 150 psig/psi / 4.8 to 10.3 bar, Unpainted***
   1-1/2 and 2 in. / DN 40 and 50 body sizes
    Steel Spring
      5 to 80 psig/psi / 0.34 to 5.5 bar,
Black with light blue stripe***
      60 to 120 psig/psi / 4.1 to 8.3 bar, Light Gray***
       100 to 140 psig/psi / 6.9 to 9.7 bar, Yellow***
       120 to 150 psig/psi / 8.3 to 10.3 bar, Black***
  Type MR95HT
   1/4 NPT and 1/2 in. / DN 15 body size
    Inconel® Spring
       15 to 100 psig / 1.0 to 6.9 bar, Unpainted***
       80 to 300 psig / 5.5 to 20.7 bar, Unpainted***
   3/4 and 1 in. and DN 20 and 25 body sizes
    17-4 PH Stainless steel Spring
       15 to 100 psig / 1.0 to 6.9 bar, Unpainted***
       80 to 300 psig / 5.5 to 20.7 bar, Unpainted***
   1-1/2 and 2 in. and DN 40 and 50 body sizes
    17-4 PH Stainless steel Spring
       15 to 100 psig / 1.0 to 6.9 bar, Unpainted***
       60 to 260 psig / 4.1 to 17.9 bar, Unpainted***
  Type MR95HP
   1/4 NPT and 1/2 in. / DN 15 body size
    Inconel® Spring
       15 to 100 psig / 1.0 to 6.9 bar, Unpainted***
       80 to 400 psig / 5.5 to 27.6 bar, Unpainted***
   3/4 and 1 in. / DN 20 and 25 body sizes
    17-4 PH Stainless steel Spring
       15 to 100 psig / 1.0 to 6.9 bar, Unpainted***
       80 to 400 psig / 5.5 to 27.6 bar, Unpainted***
   1-1/2 and 2 in. / DN 40 and 50 body sizes
    17-4 PH Stainless steel Spring
       15 to 100 psig / 1.0 to 6.9 bar, Unpainted***
       60 to 300 psig / 4.1 to 20.7 bar, Unpainted***
Replacement Parts Kit (Optional)
   Yes, send one replacement parts kit to match this order.

1. Alloy 6 is not available for 1/4 in. size.
2. O
 nly available with Stainless steel seat, orifice/valve plug, valve plug guide and stem/stem guide.
3. Available for 3/4 and 1 in. / DN 20 and 25 body sizes only.
Monel® and Inconel® are marks owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

- continued -

31

Bulletin 71.1:MR95
Ordering Guide (continued)
Specification Worksheet
Application:
Specific Use___________________________________
Line Size_____________________________________
Fluid Type and Specific Gravity____________________
Fluid 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)___________________________

Regulators Quick Order Guide
***
**
*

Readily Available for Shipment
Allow Additional Time for Shipment
Special Order, Constructed from Non-Stocked Parts.
Consult your local Sales Office for Availability.

Availability of the product being ordered is determined by the component with the
longest shipping time for the requested construction.

Performance Required:
Accuracy Requirements?________________________
Need for Extremely Fast Response?________________
Other Requirements:___________________________
____________________________________________

Industrial Regulators

Natural Gas Technologies

TESCOM

Emerson Process Management
Regulator Technologies, Inc.

Emerson Process Management
Regulator Technologies, Inc.

Emerson Process Management
Tescom Corporation

USA - Headquarters
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574

USA - Headquarters
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574

USA - Headquarters
Elk River, Minnesota 55330-2445, USA
Tels: +1 763 241 3238
    +1 800 447 1250

Asia-Pacific
Shanghai 201206, China
Tel: +86 21 2892 9000

Asia-Pacific
Singapore 128461, Singapore
Tel: +65 6770 8337

Europe
Selmsdorf 23923, Germany
Tel: +49 38823 31 287

Europe
Bologna 40013, Italy
Tel: +39 051 419 0611

Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Chartres 28008, France
Tel: +33 2 37 33 47 00

Asia-Pacific
Shanghai 201206, China
Tel: +86 21 2892 9499

Middle East and Africa
Dubai, United Arab Emirates
Tel: +971 4811 8100

Middle East and Africa
Dubai, United Arab Emirates
Tel: +971 4811 8100

For further information visit www.fisherregulators.com

The distinctive diamond shape cast into every
spring case uniquely identifies the regulator
as part of the Fisher® brand and assures you
of the highest-quality engineering, durability,
performance, and support.

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 specifications 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.

©Emerson Process Management Regulator Technologies, Inc., 2013, 2014; All Rights Reserved



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