Emerson Type Lr125 Pressure Reducing Liquid Regulator Data Sheet

2015-03-30

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Bulletin 71.2:LR125

D103575X012

November 2014

www.fisherregulators.com

Type LR125 Pressure Reducing Liquid Regulator

Figure 1. Type LR125 Pressure Reducing Liquid Regulator

Introduction

The Type LR125 pilot-operated, pressure reducing

regulator is designed for liquid industrial/commercial

applications. The Type LR125 provides smooth

operation, tight shutoff and long life. Its internally

actuated metal plug eliminates disadvantages

associated with  exible element style regulators, and

the specially engineered  ow path de ects debris,

protecting the seat from damage and erosion. The

Type LR125 is used in conjunction with a Type MR95H

pilot and Type 112 restrictor. An internal inlet strainer

prevents large particles from entering the main valve,

limiting damage to internal parts.

Features and Bene ts

Tight Shutoff—The Type LR125 uses a diaphragm

and metal plug, eliminating the disadvantages of

 exible element style regulators. When open, the

metal plug de ects particles and debris away from

the diaphragm. The result is enhanced resistance to

particle erosion, which provides excellent shutoff over

an extended life. When closed, loading pressure and

the main spring push the diaphragm onto the tapered-

edged seat on the cage.

• Rugged design

• Reliable

• Thoroughly tested

• Internally actuated

• Compact

• 1, 2, 3, 4 in. body sizes

• Recommended for water

and oil applications

• Full SST construction

available for harsh

environments

• API 614 Compliant

Type LR125 Pressure Reducing Liquid Regulator

Bulletin 71.2:LR125

Specications

The Specications section lists the specications for the Type LR125 regulator. Factory specication is stamped

on the nameplate fastened on the regulator at the factory.

Main Valve Body Sizes, End Connection Styles and

Structural Design Ratings(1)(2)

See Table 1

Maximum Inlet Pressures(1)

Type LR125 Main Valve: See Table 1

Type MR95H Pilot: See Table 2

Type 112 Restrictor: 1500 psig / 103 bar

Maximum Outlet Pressure

Type LR125 Main Valve: See Table 1

Type MR95H Pilot: See Table 2

Outlet (Control) Pressure Ranges

See Table 3

Main Valve Plug Travel

1 in. / DN 25: 0.37 in. / 9.4 mm

2 in. / DN 50: 0.68 in. / 17 mm

3 in. / DN 80: 0.98 in. / 25 mm

4 in. / DN 100: 1.19 in. / 30 mm

Main Valve Minimum Differential Pressures(1)

See Table 5

Temperature Capabilities(1)

See Table 4

Main Valve Flow Direction

Up through the center of the cage and down

through the cage slots

Main Valve Internal Inlet Strainer Sizes

1 in. / DN 25: 12 Mesh (0.0661 in. / 1.68 mm)(3)

2, 3 and 4 in. / DN 50, 80 and 100:

10 Mesh (0.0787 in. / 2 mm)(3)

Regulating Capacities

See Table 11

Flow and IEC Sizing Coefcients

Type LR125 Main Valve: See Table 6

Type MR95H Pilot: See Table 7

Type 112 Restrictor: See Table 8

Pressure Registration

External: 1/2 NPT

Spring Case Vent

Type Y602-12

Approximate Weights

See Table 9

Options

• Pre-piped Pilot Supply

• Travel Indicator

Construction Materials

Type LR125 Main Valve

Body: WCC Steel, CF8M or CF3M Stainless Steel

Bonnet: Steel or Stainless Steel

Bonnet Bushing: Steel or Stainless Steel

Cage: Stainless steel

Spring: Stainless steel

Top Plug: Stainless steel

Bottom Plug: Stainless steel

Internal Inlet Strainer: Stainless steel

Diaphragm: Nitrile (NBR) or Fluorocarbon (FKM)

O-rings: Nitrile (NBR) or Fluorocarbon (FKM)

Flanged Locknut: Stainless Steel

Backup Rings: Polytetrauoroethylene (PTFE)

Upper Spring Seat: Stainless steel

Indicator Protector and Cover: Plastic

Indicator Stem: Stainless steel

Indicator Fitting: Stainless steel

Travel Indicator Plug: Stainless steel

Type MR95H Pilot

Body: WCC Steel or CF8M Stainless Steel

Spring Case: WCC Steel or CF8M Stainless Steel

Orice: Stainless Steel

Diaphragm: Neoprene (CR) or Fluorocarbon (FKM)

Disk: Nitrile (NBR) or Fluorocarbon (FKM)

Mounting Parts

Pilot Mounting Pipe Nipple: Plated steel or

Stainless steel

Pipe Fittings: Plated steel or Stainless steel

Tubing: Stainless Steel

Type 112 Restrictor

Body: 15-5 Stainless Steel

Groove Valve: Stainless steel

Retainer: Stainless steel

Pipe Plug: Stainless steel

O-rings: Nitrile (NBR) or Fluorocarbon (FKM)

1. The pressure/temperature limits in this Bulletin and any applicable standard or code limitation should not be exceeded.

2. Ratings and end connections other than ASME standards can usually be provided; contact your local Sales Ofce.

3. Nominal sieve opening

Debris Protection—The specially engineered ow

path, along with the metal plug, allows ow through the

regulator without seat impingement. The addition of an

internal inlet strainer prevents large particles from entering

the regulator, minimizing damage to internal parts.

High Accuracy—Multiple control pressure ranges

offered by Type MR95H pilot and lower accuracy class

inherent to pilot operated pressure regulator design

provide the Type LR125 with tight and accurate control.

Long Life—The robust design of the Type LR125 with

its metal plug and specially engineered ow path allows

ow through the regulator without seat impingement.

The diaphragm design eliminates the possibility of

taking a “set”, a common problem with exible element

Bulletin 71.2:LR125

style regulators. To prevent damage, the diaphragm is

fully supported in both the open and closed positions.

These features enable the Type LR125 components to

work longer with less wear and tear.

Full Usable Capacity—Fisher® branded regulators

are laboratory tested. One hundred percent of the

published  ow capacity can be used with con dence.

Thorough Laboratory Testing—Emerson Process

Management Regulator Technologies, Inc. (Emerson™)

state-of-the-art  ow laboratory allows thorough testing of

all new designs. Tests are conducted on Fisher branded

regulators for performance features such as  ow,

strength, shutoff and material compatibility.

Easy In-Line Maintenance—Top-entry design

reduces maintenance time. Trim parts can be

inspected, cleaned and replaced without removing

the body from the pipeline. No special alignment is

required when replacing the diaphragm.

TYPE LR125 PRESSURE REDUCING REGULATOR

TYPE MR95H PILOT

Figure 2. Type LR125 Features and Bene ts

O-ring Design—The Type LR125 uses elastomer

O-rings instead of gaskets, reducing maintenance and

assembly time.

In-Service Travel Indicator—The optional travel

indicator responds to the precise movement of the

diaphragm and plug assembly and shows the actual

valve position. The travel indicator makes in-service

inspection and troubleshooting easy. Also, it can be used

for remote alarming and monitoring stem position.

Versatility—The Type LR125 uses the E-body, making

available the standard construction materials and end

connections (ASME and EN) used by other E-body

regulators and control valves. Type MR95H can handle

inlet pressures up to 300 psig / 20.7 bar and outlet

pressures from 15 to 150 psig / 1.0 to 10.3 bar.

Easy-to-Maintain—The pilot is designed to allow quick

and simple in-line trim inspection and parts replacement.

TRIM PACKAGE

W7398

W7344

TYPE MR95H PILOT

W5092

W7345

Bulletin 71.2:LR125

Powder Paint Coating—Carbon steel body is powder

paint coated providing superior impact, abrasion and

corrosion resistance.

Pilot Type Description

Type MR95H—High-pressure pressure reducing pilot

for 15 to 150 psig / 1.0 to 10.3 bar outlet pressures.

Designed to handle inlet pressures up to 300 psig /

20.7 bar.

Principle of Operation

As long as the outlet (control) pressure is above the

outlet pressure setting, the pilot valve plug or disk

remains closed (Figure 3). Force from the main spring, in

addition to inlet pressure bleeding through the restrictor,

provide downward loading pressure to keep the main

valve diaphragm and plug assembly tightly shutoff.

When the outlet pressure decreases below the pilot

outlet pressure setting, the pilot plug or disk assembly

opens. Loading pressure bleeds downstream through

the pilot faster than it can be replaced through the

supply line. This reduces loading pressure on top of

the main valve diaphragm and plug assembly and

lets the unbalanced force between inlet and loading

pressure overcome the main spring force to open the

Type LR125 diaphragm and plug assembly.

As the outlet pressure rises toward the outlet pressure

setting, it compresses the pilot diaphragm against

the pilot control spring and lets the pilot valve plug

or disk close. Loading pressure begins to build up

on the Type LR125 diaphragm and plug assembly.

The loading pressure, along with force from the main

spring, pushes the diaphragm and plug assembly onto

the tapered-edge seat, producing tight shutoff.

Figure 3. Type LR125 Operational Schematic

INLET PRESSURE

LOADING PRESSURE

ATMOSPHERIC PRESSURE

OUTLET PRESSURE

M1215

TYPE LR125 WITH TYPE MR95H PILOT AND TYPE 112 RESTRICTOR

CONTROL SPRING

TYPE 112 RESTRICTOR

SUPPLY LINE

TYPE MR95H PILOT

DIAPHRAGM

VALVE PLUG

MAIN SPRING

DIAPHRAGM AND

PLUG ASSEMBLY

INTERNAL STRAINER

Bulletin 71.2:LR125

MAIN VALVE BODY SIZE MAIN VALVE

BODY MATERIAL END CONNECTION STYLE(2)

STRUCTURAL DESIGN

RATING(3)

MAXIMUM OPERATING

INLET PRESSURE(3)

In. DN psig bar psig bar

1, 2, 3 and 4 25, 50, 80 and 100

WCC Steel

NPT or SWE

(1 and 2 in. only) 1500 103 300 20.7

CL150 RF 290 20.0 290 20.0

CL300 RF 750 51.7

300 20.7

CL600 RF 1500 103

PN 16/25/40 RF(4) 580 40.0

CF8M Stainless steel

NPT

(1 and 2 in. only) 1440 99.2 300 20.7

CL150 RF 275 19.0 275 19.0

CL300 RF 720 49.6

300 20.7CL600 RF 1440 99.2

PN 16/25/40 RF(4) 580 40.0

1. The pressure/temperature limits in this Bulletin and any applicable standard or code limitation should not be exceeded.

2. Ratings and end connections for other than ASME standard can usually be provided. Contact your local Sales Ofce for assistance.

3. Maximum cold working pressure (CWP) per ASME B16.34 or product Bulletin limit, whichever is lowest. Temperature may decrease these maximum pressures.

4. Not available for 4 in. / DN 100 body size.

Table 1. Type LR125 Main Valve Body Sizes, End Connection Styles, Structural Design Ratings and Maximum Operating

Inlet Pressures(1)

Installation

The robust design of the Type LR125 allows this regulator

to be installed indoors or outdoors. This regulator

is designed to withstand the elements. The powder

paint coating protects regulator against minor impacts,

abrasions and corrosion. When installed outdoors,

the Type LR125 does not require protective housing.

However, the Type MR95H pilot should be oriented so

that the pilot spring case vent is pointed down. Otherwise,

make sure the vent is protected so that rain, moisture,

insects or any debris will not accumulate inside or block

the vent assembly.

When installed indoors, install remote

venting of the pilot spring case as required by applicable

codes and regulations.

Table 3. Outlet (Control) Pressure Ranges

PILOT OUTLET PRESSURE RANGE SPRING WIRE DIAMETER SPRING FREE LENGTH SPRING PART NUMBER

AND COLOR

psig bar In. mm In. mm

Type MR95H

15 to 30

25 to 75

70 to 150

1.0 to 2.1

1.7 to 5.2

4.8 to 10.3

0.207

0.234

0.283

5.26

5.94

7.19

2.50

2.60

2.44

63.5

65.9

62.0

ERCA04288A0 Yellow

ERAA01910A0 Green

ERAA01911A0 Red

Table 2. Type MR95H Pilot Maximum Cold Working Pressure(1)(2)

17E68 NITRILE (NBR) 17E97 NITRILE (NBR) 17E88 FLUOROCARBON (FKM)

Liquid Temperature -20 to 150°F / -29 to 66°C 0 to 150°F / -18 to 66°C 0 to 250°F / -18 to 121°C(1)

General Applications

Best for low pressure

differential and cold temperature

service applications.

Best for abrasive or

erosive service applications.

Best for high temperature

applications.

Heavy Particle Erosion Fair Excellent Good

1. Fluorocarbon (FKM) is limited to 200°F / 93°C in hot water.

Table 4. Diaphragm Material Selection Information

BODY SIZE BODY AND SPRING CASE MATERIAL MAXIMUM INLET PRESSURE MAXIMUM OUTLET PRESSURE

1/2 NPT Steel

Stainless steel

300 psig / 20.7 bar

1. The pressure/temperature limits in this Bulletin, and any applicable standard or code limitation should not be exceeded.

2. Temperature and/or the body end connection may decrease these maximum pressures.

Overpressure Protection

Overpressuring any portion of a regulator or associated

equipment may cause personal injury, leakage

or property damage due to bursting of pressure-

containing parts. Provide appropriate pressure relieving

or pressure limiting devices to ensure that the limits in

the Specications section are not exceeded. Common

methods of external overpressure protection include

relief valves, monitoring regulators, shutoff devices

and series regulation. Regulator operation within

ratings does not prevent the possibility of damage from

external sources or from debris in the pipeline. Install

additional strainer or lter upstream of the regulator for

applications with high levels of debris.

Bulletin 71.2:LR125

Table 5. Main Valve Minimum Differential Pressures(1)

MAIN VALVE

BODY SIZE DIAPHRAGM MINIMUM DIFFERENTIAL, PERCENT OF CAPACITY

For 90% Capacity For 100% Capacity

In. DN Diaphragm Code Diaphragm Material psid bar d psid bar d

125

17E68 (standard) Nitrile (NBR), Low Minimum Differential 30 2.1 30 2.1

17E97 Nitrile (NBR), High Erosion Resistance 35 2.5 35 2.5

17E88 Fluorocarbon (FKM), High Temperature Capability 30 2.1 30 2.1

250

17E68 (standard) Nitrile (NBR), Low Minimum Differential 18 1.2 19 1.3

17E97 Nitrile (NBR), High Erosion Resistance 24 1.7 24 1.7

17E88 Fluorocarbon (FKM), High Temperature Capability 18 1.2 19 1.3

380

17E68 (standard) Nitrile (NBR), Low Minimum Differential 21 1.5 28 1.9

17E97 Nitrile (NBR), High Erosion Resistance 23 1.6 23 1.6

17E88 Fluorocarbon (FKM), High Temperature Capability 21 1.5 28 1.9

4100

17E68 (standard) Nitrile (NBR), Low Minimum Differential 16 1.1 30 2.1

17E97 Nitrile (NBR), High Erosion Resistance 16 1.1 34 2.3

17E88 Fluorocarbon (FKM), High Temperature Capability 16 1.1 30 2.1

1. See Table 1 for structural design ratings and Table 2 for Type MR95H pilot rating.

Figure 4. Cavitation Sizing for Water

Table 6. Flow and Sizing Coef cients for Type LR125 Main Valve at 100% Capacity

MAIN VALVE BODY SIZE REGULATING COEFFICIENTS WIDE-OPEN COEFFICIENTS Km

IEC SIZING COEFFICIENTS

In. DN CVC1CVC1XTFDFL

1 25 14.8 33.4 15.2 33.5 0.88 0.706 0.06 0.94

2 50 50.8 37.2 52.4 37.2 0.92 0.875 0.09 0.96

3 80 91.4 38.8 94.1 38.8 0.94 0.952 0.09 0.97

4 100 147 38.7 151 38.7 0.85 0.947 0.09 0.92

CAVITATION PREDICTION

CONTINUOUS SERVICE REGION

INTERMITTENT SERVICE REGION

FULL CAVITATION REGION

OUTLET PRESSURE (P2)

psig / bar

INLET PRESSURE (P1)

psig / bar

150 /

10.3

300 /

20.7

270 /

18.6

240 /

16.5

210 /

14.5

180 /

12.4

150 /

10.3

120 /

8.3

135 /

9.3

120 /

8.3

105 /

7.2

90 /

6.2

90 /

6.2

75 /

5.2

60 /

4.1

60 /

4.1

45 /

3.1

30 /

2.1

30 /

2.1

15 /

1.0

Bulletin 71.2:LR125

RESTRICTOR SETTING CvC1

Setting 2 0.03

Setting 4 0.07

Setting 6 0.14

Setting 8 0.17

Table 8. Type 112 Restrictor Flow Coefcients

Table 7. Flow and Sizing Coefcients for Type MR95H Pilot

BODY SIZE,

IN. / DN

WIDE-OPEN COEFFICIENT C1Km

IEC SIZING COEFFICIENTS

XTFDFL

1/2 / 15 2.9 35.5 0.79 0.797 0.70 0.89

Km = FL2

BODY SIZE MAIN VALVE BODY,

LBS / kg

In. DN NPT or SWE CL150 RF CL300 RF CL600 RF

1 25 22 / 10 24 / 11 28 / 13 32 / 15

2 50 51 / 23 54 / 24 58 / 26 65 /29

3 80 103 / 47 107 / 49 110 / 50 123 / 56

4 100 139 / 63 145 / 66 159 / 72 192 / 87

Table 9. Approximate Weights Including Type MR95H Pilot and Restrictor

Cavitation Sizing

Note

The cavitation sizing graph in Figure 4

applies to water only. For cavitation

sizing for other liquids, contact your

local Sales Ofce.

Use Figure 4 to determine cavitation sizing of

Type LR125. The Cavitation Prediction Curve depicts

P1 and P2 combinations where cavitation is likely

to occur. The curve shape was determined through

analysis and lab conrmation on water. Determine the

desired inlet pressure and outlet pressure of the system

and nd the intersection of those values on the graph.

No Cavitation Region—Cavitation is not expected

in this region. Damage to regulator components and

piping is highly unlikely as a result of cavitation.

Note

Emerson™ denies responsibility for

damage and voids the warranty if the

product is used within the Cavitation

Region (see Figure 4).

Cavitation Region—Cavitation may occur. Damage

to regulator components and piping is possible. The

risk of damage increases as P1 and P2 move down

and to the right on the table. Cavitation damage can

be avoided by dividing the total pressure drop into

stages so that the P1 and P2 combination falls into the

“No Cavitation Region” at every stage.

Capacity Information

Note

Flow capacities are laboratory veried;

therefore, regulators may be sized for

100% ow published capacities. It is not

necessary to reduce published capacities.

The capacity information on the following pages is based

on four % droop, 10%, 20%, 30% and 40%. Droop is

the negative control deviation or pressure offset below

the setpoint of the regulator.

Table 10 shows Cv values at different % droop and

selected inlet pressures and outlet pressure settings.

Table 11 shows the liquid regulating capacities of the

Type LR125 regulator at selected inlet pressures and outlet

pressure settings. Flows are in gallons per minute (GPM)

and liters per minute (L/min) of water.

Bulletin 71.2:LR125

SPRING

RANGE AND

COLOR

OUTLET

PRESSURE INLET 1 IN. / DN 25 2 IN. / DN 50 3 IN. / DN 80 4 IN. / DN 100

psig bar psig bar 10% 20% 30% 40% 10% 20% 30% 40% 10% 20% 30% 40% 10% 20% 30% 40%

15 to 30 psig /

1.0 to 2.1 bar

Yellow

15 1.0

45 3.1 14.8 14.8 14.8 14.8 39.7 44.2 48.3 50.8 83.0 89.2 91.4 91.4 133.4 143.4 147.0 147.0

50 3.4 14.8 14.8 14.8 14.8 39.2 44.5 48.4 50.6 83.3 89.6 91.4 91.4 134.0 144.1 147.0 147.0

60 4.1 14.8 14.8 14.8 14.8 38.3 44.9 48.5 50.0 84.1 90.4 91.4 91.4 135.2 145.4 147.0 147.0

65 4.4 14.8 14.8 14.8 14.8 37.8 45.2 48.6 49.8 84.5 90.8 91.4 91.3 135.9 146.0 147.0 146.8

20 1.4

50 3.4 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.8 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

60 4.1 14.8 14.8 14.8 14.8 48.5 50.7 50.7 50.4 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

70 4.8 14.8 14.8 14.8 14.8 46.1 50.0 50.5 49.9 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

75 5.1 14.8 14.8 14.8 14.8 44.9 49.7 50.3 49.7 91.2 91.4 91.4 91.4 146.7 147.0 147.0 146.1

30 2.1

60 4.1 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.8 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

75 5.1 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.7 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

90 6.1 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.2 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

100 6.8 14.8 14.8 14.8 14.8 47.6 50.8 50.6 49.8 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

25 to 75 psig /

1.7 to 5.2 bar

Green

25 1.7

55 3.7 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.8 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

75 5.1 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.6 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

80 5.4 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.5 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

90 6.1 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.3 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

50 3.4

80 5.4 14.8 14.8 14.8 14.8 49.0 50.1 49.9 49.7 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

100 6.8 14.8 14.8 14.8 14.8 49.1 50.1 50.0 49.8 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

125 8.5 14.8 14.8 14.8 14.8 49.2 50.0 50.1 50.1 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

150 10.2 14.8 14.8 14.8 14.8 49.3 50.0 50.2 50.3 91.4 91.4 91.4 90.9 147.0 147.0 147.0 146.2

75 5.2

110 7.5 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.8 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

125 8.5 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.8 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

150 10.2 14.8 14.8 14.8 14.8 49.8 49.8 49.5 49.9 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

175 11.9 14.7 14.8 14.8 14.8 45.3 46.5 46.4 47.1 86.1 87.9 88.0 88.7 138.5 141.3 141.6 142.6

200 13.6 14.2 14.5 14.6 14.5 40.7 43.1 43.3 44.2 80.6 83.4 84.0 84.6 129.6 134.2 135.1 136.0

70 to 150 psig /

4.8 to 10.3 bar

Red

70 4.8

100 6.8 14.8 14.8 14.8 14.8 50.5 49.4 49.3 49.9 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

125 8.5 14.8 14.8 14.8 14.8 46.1 46.0 46.6 47.5 87.7 88.6 89.5 91.4 141.1 142.5 144.0 147.0

150 10.2 14.7 14.8 14.7 14.8 41.6 42.7 43.8 45.0 82.8 84.0 84.9 86.6 133.1 135.0 136.5 139.2

175 11.9 14.6 14.8 14.8 14.8 44.6 46.0 46.0 46.7 85.2 87.0 87.2 87.9 137.1 139.9 140.2 141.4

190 12.9 14.5 14.8 14.8 14.8 46.4 47.9 47.3 47.7 86.7 88.8 88.5 88.8 139.4 142.8 142.4 142.8

200 13.6 14.5 14.8 14.8 14.8 47.7 49.2 48.2 48.4 87.7 90.0 89.5 89.3 141.0 144.7 143.9 143.7

100 6.9

130 8.8 14.8 14.8 14.8 14.8 50.8 50.0 49.6 49.7 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

150 10.2 14.8 14.8 14.8 14.8 50.1 49.5 49.2 49.3 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

175 11.9 14.8 14.8 14.8 14.8 48.4 48.9 48.7 48.8 90.7 91.4 91.4 91.4 145.9 147.0 147.0 147.0

200 13.6 14.8 14.8 14.8 14.8 46.7 48.3 48.2 48.4 88.1 90.3 90.4 90.4 141.6 145.2 145.4 145.3

250 17.0 14.2 14.2 14.2 14.2 43.2 47.1 47.3 47.4 82.8 86.2 86.5 86.5 133.2 138.6 139.1 139.2

275 18.7 13.9 13.7 13.7 13.7 41.5 46.5 46.8 46.9 80.2 84.1 84.5 84.6 129.0 135.3 135.9 136.1

125 8.6

155 10.5 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.8 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

175 11.9 14.8 14.8 14.8 14.8 50.8 50.8 50.8 50.6 91.4 91.4 91.4 91.4 147.0 147.0 147.0 147.0

200 13.6 14.8 14.8 14.8 14.8 45.9 47.5 48.3 48.4 88.4 90.5 91.2 91.2 142.2 145.5 146.6 146.7

250 17.0 14.8 14.8 14.8 14.8 43.6 46.4 46.9 47.0 85.2 87.7 88.2 88.1 137.0 141.1 141.9 141.8

275 18.7 14.7 14.6 14.6 14.6 42.5 45.8 46.3 46.3 83.6 86.3 86.7 86.6 134.4 138.9 139.5 139.3

300 20.4 14.5 14.3 14.3 14.3 41.4 45.3 45.6 45.6 82.0 85.0 85.2 85.1 131.8 136.6 137.1 136.8

150 10.3

180 12.2 14.8 14.8 14.8 14.8 45.4 47.2 49.0 49.0 89.3 91.3 91.4 91.4 143.5 146.8 147.0 147.0

200 13.6 14.8 14.8 14.8 14.8 45.0 46.7 48.3 48.3 88.8 90.7 91.4 91.4 142.8 145.9 147.0 147.0

225 15.3 14.8 14.8 14.8 14.8 44.5 46.2 47.5 47.5 88.2 90.0 90.9 90.9 141.8 144.7 146.3 146.2

250 17.0 14.8 14.8 14.8 14.8 44.0 45.7 46.6 46.6 87.5 89.3 89.9 89.8 140.8 143.6 144.7 144.4

275 18.7 14.8 14.8 14.8 14.8 43.5 45.2 45.8 45.7 86.9 88.5 88.9 88.6 139.8 142.4 143.0 142.5

300 20.4 14.8 14.8 14.8 14.8 43.1 44.7 44.9 44.9 86.3 87.8 87.9 87.4 138.8 141.2 141.4 140.6

1. Type LR125 on liquid service with 1/2 NPT Type MR95H Pilot, 100% Cage Capacity with internal inlet strainer and Type 112 Restrictor Setting of “4”.

2. Values published in this table are laboratory tested and are presented based on % droop (negative control deviation only) or pressure offset below setpoint.

Exceeds recommended maximum pressure drop ratio of 0.65.

Table 10. Cv(1) at % Droop (Pressure Offset Below Setpoint)(2)

Bulletin 71.2:LR125

Table 11. Capacity(1), Water (GPM / L/min) for 1 and 2 in. / DN 25 and 50 Bodies at % Droop (Pressure Offset Below Setpoint)(2)

SPRING

RANGE AND

COLOR

OUTLET

PRESSURE INLET 1 IN. / DN 25 2 IN. / DN 50

10% 20% 30% 40% 10% 20% 30% 40%

psig bar 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

15 to 30 psig /

1.0 to 2.1 bar

Yellow

15 1.0

45 3.1 83 314 85 322 87 329 89 336 223 843 254 961 284 1074 305 1154

50 3.4 89 338 91 345 93 352 95 359 237 897 274 1037 304 1151 324 1226

60 4.1 101 382 103 388 104 394 106 400 261 989 311 1178 341 1292 357 1353

65 4.4 106 402 108 408 109 414 111 419 272 1028 329 1245 359 1358 372 1409

20 1.4

50 3.4 84 317 86 327 89 336 91 345 287 1088 296 1121 305 1154 313 1185

60 4.1 96 363 98 372 100 380 103 388 314 1190 336 1272 344 1302 349 1323

70 4.8 107 404 109 412 111 419 113 427 333 1259 368 1392 378 1429 380 1440

75 5.1 112 423 114 430 116 438 117 445 339 1284 382 1446 393 1487 394 1493

30 2.1

60 4.1 85 322 89 336 92 350 96 363 292 1105 305 1154 317 1201 329 1246

75 5.1 103 388 106 400 109 412 112 423 352 1332 363 1373 373 1413 383 1449

90 6.1 117 445 120 455 123 465 126 475 403 1526 413 1562 422 1597 426 1611

100 6.8 126 479 129 488 132 498 134 507 407 1541 443 1676 450 1703 451 1707

25 to 75 psig /

1.7 to 5.2 bar

Green

25 1.7

55 3.7 84 319 88 331 91 343 94 354 290 1096 301 1138 311 1178 321 1216

75 5.1 107 406 110 415 112 425 115 434 368 1393 377 1426 385 1458 392 1484

80 5.4 112 425 115 434 117 443 119 452 385 1458 394 1490 402 1520 407 1541

90 6.1 122 460 124 469 126 477 128 485 417 1580 425 1609 433 1637 435 1648

50 3.4

80 5.4 88 331 94 354 99 376 105 396 290 1097 317 1200 335 1267 351 1329

100 6.8 110 415 115 434 119 452 124 469 364 1378 388 1469 403 1526 417 1579

125 8.5 132 501 136 517 140 532 144 546 440 1665 461 1746 475 1798 488 1847

150 10.2 152 574 155 588 159 601 162 613 505 1912 524 1984 538 2037 551 2086

75 5.2

110 7.5 96 365 105 396 112 425 119 452 331 1254 359 1360 385 1458 410 1550

125 8.5 112 425 119 452 126 477 132 501 385 1458 410 1550 433 1637 454 1720

150 10.2 134 509 140 532 146 553 152 574 452 1711 472 1787 489 1851 511 1934

175 11.9 153 577 159 601 164 620 169 639 469 1776 498 1885 514 1945 537 2031

200 13.6 164 620 171 647 177 670 180 683 469 1775 510 1932 526 1992 551 2085

70 to 150 psig /

4.8 to 10.3 bar

Red

70 4.8

100 6.8 90 341 98 372 106 400 113 427 307 1163 327 1240 352 1334 380 1438

125 8.5 117 441 123 465 129 488 135 510 363 1373 382 1447 406 1537 432 1637

150 10.2 137 519 143 541 148 560 154 582 388 1469 414 1567 440 1666 468 1772

175 11.9 154 585 161 610 166 629 171 646 472 1788 501 1898 516 1953 539 2039

190 12.9 164 620 171 648 176 665 180 682 523 1981 555 2100 562 2126 580 2196

200 13.6 170 643 178 672 182 688 186 704 558 2111 591 2236 592 2240 608 2301

100 6.9

130 8.8 94 354 105 396 115 434 124 469 321 1216 353 1337 384 1454 416 1575

150 10.2 115 434 124 469 132 501 140 532 388 1469 414 1567 440 1666 468 1772

175 11.9 136 517 144 546 152 574 159 601 446 1688 476 1804 499 1889 524 1983

200 13.6 155 588 162 614 169 639 175 663 489 1853 529 2002 550 2081 572 2166

250 17.0 180 681 185 700 191 723 196 742 547 2071 614 2324 634 2400 653 2472

275 18.7 189 715 191 724 197 745 202 763 565 2138 649 2458 670 2535 687 2602

125 8.6

155 10.5 96 365 110 415 122 460 132 501 331 1254 377 1426 417 1580 454 1720

175 11.9 117 443 128 485 138 524 148 560 402 1520 440 1665 475 1799 506 1917

200 13.6 138 524 148 560 157 594 165 626 429 1623 475 1798 512 1938 541 2046

250 17.0 174 657 181 686 189 714 196 741 512 1937 568 2151 598 2265 622 2353

275 18.7 187 708 193 731 200 757 206 779 542 2053 606 2295 633 2398 655 2479

300 20.4 198 750 203 767 209 790 214 810 567 2148 640 2424 665 2516 684 2591

150 10.3

180 12.2 99 376 115 434 128 485 140 532 305 1153 365 1383 424 1607 465 1761

200 13.6 119 452 132 501 144 546 155 588 363 1374 418 1582 471 1783 507 1919

225 15.3 140 532 152 574 162 614 172 651 422 1599 474 1793 520 1968 552 2088

250 17.0 159 601 169 639 178 675 187 709 472 1788 521 1972 561 2125 589 2231

275 18.7 175 663 184 697 193 730 201 762 515 1950 562 2129 597 2258 622 2354

300 20.4 190 720 199 752 207 782 214 812 553 2093 599 2267 627 2373 650 2461

1. Type LR125 on liquid service with 1/2 NPT Type MR95H Pilot, 100% Cage Capacity with internal inlet strainer and Type 112 Restrictor Setting of “4”.

2. Values published in this table are laboratory tested and are presented based on % droop (negative control deviation only) or pressure offset below setpoint.

Exceeds recommended maximum pressure drop ratio of 0.65.

- continued -

Bulletin 71.2:LR125

Table 11. Capacity(1), Water (GPM / L/min) for 3 and 4 in. / DN 80 and 100 Bodies at % Droop (Pressure Offset Below

Setpoint)(2) (continued)

SPRING

RANGE AND

COLOR

OUTLET

PRESSURE INLET 3 IN. / DN 80 4 IN. / DN 100

10% 20% 30% 40% 10% 20% 30% 40%

psig bar 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

15 to 30 psig /

1.0 to 2.1 bar

Yellow

15 1.0

45 3.1 466 1762 512 1939 537 2032 548 2076 749 2835 824 3119 863 3268 882 3339

50 3.4 503 1906 552 2090 574 2174 585 2215 810 3065 888 3362 924 3497 941 3563

60 4.1 573 2171 626 2370 643 2434 653 2471 922 3491 1007 3812 1034 3915 1050 3974

65 4.4 606 2295 661 2502 675 2554 683 2586 975 3690 1063 4024 1085 4108 1099 4159

20 1.4

50 3.4 517 1957 533 2017 548 2076 563 2133 832 3148 857 3245 882 3339 906 3430

60 4.1 592 2242 606 2295 620 2347 633 2397 953 3606 975 3691 997 3774 1018 3855

70 4.8 659 2495 672 2542 684 2589 696 2635 1060 4013 1080 4089 1100 4164 1120 4238

75 5.1 689 2606 702 2658 714 2702 725 2746 1107 4192 1129 4274 1148 4346 1160 4390

30 2.1

60 4.1 525 1988 548 2076 571 2161 592 2242 844 3197 882 3339 918 3475 953 3606

75 5.1 633 2397 653 2471 672 2542 690 2612 1018 3855 1050 3974 1080 4089 1110 4201

90 6.1 725 2746 743 2811 759 2874 776 2936 1167 4417 1194 4521 1221 4622 1247 4722

100 6.8 781 2956 797 3016 812 3075 828 3133 1256 4754 1282 4851 1307 4946 1331 5039

25 to 75 psig /

1.7 to 5.2 bar

Green

25 1.7

55 3.7 521 1972 541 2047 560 2119 578 2188 838 3172 870 3292 900 3408 930 3519

75 5.1 662 2507 678 2566 693 2624 708 2680 1065 4032 1090 4127 1115 4220 1139 4310

80 5.4 693 2624 708 2680 723 2735 737 2789 1115 4220 1139 4310 1162 4399 1185 4486

90 6.1 751 2843 765 2895 778 2946 792 2996 1208 4572 1230 4656 1252 4738 1273 4819

50 3.4

80 5.4 541 2047 578 2188 613 2321 646 2447 870 3292 930 3519 986 3733 1039 3935

100 6.8 678 2566 708 2680 737 2789 765 2895 1090 4127 1139 4310 1185 4486 1230 4656

125 8.5 818 3095 843 3190 867 3282 891 3372 1315 4977 1355 5130 1395 5279 1433 5424

150 10.2 937 3545 959 3629 980 3710 996 3770 1506 5702 1542 5836 1576 5967 1602 6063

75 5.2

110 7.5 596 2256 646 2447 693 2624 737 2789 958 3628 1039 3935 1115 4220 1185 4486

125 8.5 693 2624 737 2789 778 2946 818 3095 1115 4220 1185 4486 1252 4738 1315 4977

150 10.2 830 3143 867 3282 903 3416 937 3545 1335 5054 1395 5279 1452 5495 1506 5702

175 11.9 893 3380 942 3566 974 3688 1011 3827 1436 5437 1515 5736 1567 5931 1626 6155

200 13.6 927 3511 987 3737 1020 3860 1053 3985 1492 5646 1588 6010 1640 6209 1693 6409

70 to 150 psig /

4.8 to 10.3 bar

Red

70 4.8

100 6.8 556 2105 606 2295 653 2471 696 2635 894 3385 975 3691 1050 3974 1120 4238

125 8.5 691 2614 736 2786 780 2954 833 3152 1111 4205 1184 4481 1255 4750 1339 5070

150 10.2 772 2923 814 3081 853 3228 900 3405 1242 4701 1309 4956 1372 5192 1447 5477

175 11.9 902 3414 949 3591 978 3704 1014 3839 1450 5490 1526 5776 1574 5956 1631 6175

190 12.9 977 3698 1028 3890 1051 3980 1080 4088 1571 5947 1653 6257 1691 6401 1737 6575

200 13.6 1026 3884 1080 4087 1099 4161 1123 4250 1650 6246 1737 6574 1768 6693 1806 6836

100 6.9

130 8.8 578 2188 646 2447 708 2680 765 2895 930 3519 1039 3935 1139 4310 1230 4656

150 10.2 708 2680 765 2895 818 3095 867 3282 1139 4310 1230 4656 1315 4977 1395 5279

175 11.9 836 3165 891 3372 937 3545 980 3710 1345 5090 1433 5424 1506 5702 1576 5967

200 13.6 924 3497 989 3743 1031 3901 1069 4047 1486 5624 1590 6019 1658 6275 1719 6509

250 17.0 1048 3967 1124 4253 1160 4392 1193 4515 1685 6380 1807 6841 1866 7063 1918 7261

275 18.7 1091 4131 1175 4447 1210 4580 1241 4696 1755 6644 1890 7153 1946 7367 1995 7553

125 8.6

155 10.5 596 2256 678 2566 751 2843 818 3095 958 3628 1090 4127 1208 4572 1315 4977

175 11.9 723 2735 792 2996 855 3236 914 3460 1162 4399 1273 4819 1375 5205 1470 5565

200 13.6 827 3131 905 3425 967 3660 1020 3860 1330 5035 1455 5509 1555 5887 1640 6208

250 17.0 999 3782 1074 4067 1124 4256 1166 4414 1607 6082 1728 6541 1808 6845 1875 7099

275 18.7 1065 4033 1142 4323 1188 4495 1225 4636 1714 6487 1837 6953 1910 7230 1970 7457

300 20.4 1122 4249 1201 4548 1243 4704 1276 4830 1805 6834 1932 7314 1999 7565 2052 7769

150 10.3

180 12.2 599 2266 707 2677 792 2996 867 3282 963 3645 1137 4306 1273 4819 1395 5279

200 13.6 716 2709 811 3072 891 3372 959 3629 1151 4357 1305 4940 1433 5424 1542 5836

225 15.3 836 3166 922 3491 996 3771 1056 3998 1345 5091 1483 5614 1602 6065 1699 6431

250 17.0 939 3554 1018 3853 1083 4100 1135 4298 1510 5716 1637 6196 1742 6593 1826 6912

275 18.7 1029 3894 1102 4172 1160 4390 1205 4562 1654 6262 1773 6711 1865 7060 1938 7337

300 20.4 1109 4198 1178 4459 1228 4648 1267 4797 1783 6751 1895 7172 1975 7476 2038 7715

1. Type LR125 on liquid service with 1/2 NPT Type MR95H Pilot, 100% Cage Capacity with internal inlet strainer and Type 112 Restrictor Setting of “4”.

2. Values published in this table are laboratory tested and are presented based on % droop (negative control deviation only) or pressure offset below setpoint.

Exceeds recommended maximum pressure drop ratio of 0.65.

Bulletin 71.2:LR125

Figure 5. Type LR125 Dimensions

Table 12. Type LR125 Dimensions

BODY SIZE DIMENSIONS, IN. / mm

D D1E G

T V

In. DN CL150 RF CL300 RF CL600 RF CL150 RF CL300 RF CL600 RF WCC

Steel

CF8M

SST

1 25 3.62 /

91.9

3.88 /

98.6 4.13 / 104.9 7.25 / 184.2 7.75 / 196.9 8.25 / 209.6 7.40 /

189.0

5.40 /

137.0

11.39 /

289.3

2.40 /

60.0

8.10 /

205.8

8.10 /

205.8

2.97 /

75.4

9.40 /

238.8

2 50 5.0 /

127.0

5.3 /

133.4

5.6 /

143.0 10.00 / 254.0 10.50 / 266.7 11.25 / 286.0 9.00 /

229.0

6.89 /

175.0

11.65 /

295.9

3.10 /

79.0

8.18 /

207.8

9.18 /

233.2

2.00 /

51.0

11.00 /

279.4

3 80 5.9 /

149.3

6.3 /

158.8

6.6 /

168.3 11.75 / 298.5 12.50 / 317.5 13.25 / 336.6 13.30 /

338.0

9.33 /

236.9

13.68 /

347.5

3.80 /

97.0

8.66 /

220.0

9.66 /

245.4

3.80 /

97.0

15.00 /

381.0

4 100 6.9 /

176.3

7.3 /

184.2

7.8 /

196.9 13.88 / 352.6 14.50 / 368.3 15.50 / 393.7 14.70 /

373.0

10.47 /

265.9

15.24 /

387.1

5.10 /

130.0

9.52 /

241.8

9.52 /

241.8

3.80 /

97.0

17.00 /

431.8

ERAA00985_B

TYPE LR125 WITH TYPE MR95H PILOT

Ordering Information

Carefully review each specication, then complete

the Ordering Guide on this page. If a pilot setpoint

is not requested, the regulator will be factory set at

the approximate midrange. Please complete the

specications worksheet at the bottom of the ordering

guide on page 12.

Ordering Guide

Body Size (Select One)

1 in. / DN 25***

2 in. / DN 50***

3 in. / DN 80***

4 in. / DN 100***

Body Material and End Connection Style (Select One)

WCC Steel Body

NPT (Available in 1 and 2 in. bodies only)***

SWE (Available in 1 and 2 in. bodies only)***

CL150 RF***

CL300 RF***

CL600 RF***

PN 16/25/40 RF* (Not available in 4 in. body)

_____________ specify rating

CF8M Stainless Steel Body

NPT (Available in 1 and 2 in. bodies only)***

CL150 RF***

CL300 RF***

CL600 RF***

PN 16/25/40 RF* (Not available in 4 in. body)

_____________ specify rating

Main Valve Diaphragm Material (Select One)

17E68 Nitrile (NBR) (low minimum differential

capability) (standard)***

17E97 Nitrile (NBR) (high erosion resistant)***

17E88 Fluorocarbon (FKM)

(high temperature capability)**

Main Valve O-ring Material (Select One)

Nitrile (NBR) (standard)***

Fluorocarbon (FKM)**

Travel Indicator (Select One)

No (standard)***

Yes***

Inlet Body Tap (Select One)

Inlet body tap only (standard)***

Inlet body tap with pre-piped pilot supply***

Inlet/outlet body taps only***

Inlet/outlet body taps with pre-piped pilot supply and

pilot bleed***

TYPE MR95H PILOT

1/4 NPT

VENT

OPTIONAL

INDICATOR COVER

TRAVEL INDICATOR

COVER REMOVAL

CLEARANCE

VALVE TRIM

REMOVAL

CLEARANCE

TYPE 112

RESTRICTOR 1/2 NPT

CONTROL

LINE

CONNECTION

1/4 NPT PILOT

SUPPLY CONNECTION

Bulletin 71.2:LR125

The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls International LLC,

a business of Emerson Process Management.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or

guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specications of such

products at any time without notice.

Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and

maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.

Industrial Regulators

Emerson Process Management

Regulator Technologies, Inc.

USA - Headquarters

McKinney, Texas 75070 USA

Tel: +1 800 558 5853

Outside U.S. +1 972 548 3574

Asia-Pacic

Shanghai 201206, China

Tel: +86 21 2892 9000

Europe

Bologna 40013, Italy

Tel: +39 051 419 0611

Middle East and Africa

Dubai, United Arab Emirates

Tel: +971 4811 8100

Natural Gas Technologies

Emerson Process Management

Regulator Technologies, Inc.

USA - Headquarters

McKinney, Texas 75070 USA

Tel: +1 800 558 5853

Outside U.S. +1 972 548 3574

Asia-Pacic

Singapore 128461, Singapore

Tel: +65 6770 8337

Europe

Bologna 40013, Italy

Tel: +39 051 419 0611

Chartres 28008, France

Tel: +33 2 37 33 47 00

Middle East and Africa

Dubai, United Arab Emirates

Tel: +971 4811 8100

TESCOM

Emerson Process Management

Tescom Corporation

USA - Headquarters

Elk River, Minnesota 55330-2445, USA

Tels: +1 763 241 3238

+1 800 447 1250

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Selmsdorf 23923, Germany

Tel: +49 38823 31 287

Asia-Pacic

Shanghai 201206, China

Tel: +86 21 2892 9499

For further information visit www.fisherregulators.com

Regulators Quick Order Guide

* * * Readily Available for Shipment

* * Allow Additional Time for Shipment

*Special Order, Constructed from Non-Stocked Parts.

Consult your local Sales Ofce for Availability.

Availability of the product being ordered is determined by the component with the

longest shipping time for the requested construction.

Specication Worksheet

Application:

Specic Use ___________________________________

Line Size _____________________________________

Fluid Type ____________________________________

Specic Gravity ________________________________

Temperature __________________________________

Does the Application Require Overpressure Protection?

Yes No

Pressure:

Maximum Inlet Pressure _________________________

Minimum Inlet Pressure __________________________

Differential Pressure ____________________________

Set Pressure __________________________________

Maximum Flow ________________________________

Accuracy Requirements:

Less Than or Equal To:

5% 10% 20% 40%

Construction Material Requirements (if known):

_____________________________________________

Ordering Guide (continued)

Pilot Diaphragm Material (Select One)

Neoprene (CR) (standard)***

Fluorocarbon (FKM)**

Pilot Valve Plug Material (Select One)

Nitrile (NBR) (standard)***

Fluorocarbon (FKM)***

Type MR95H Pilot Outlet Pressure Range (Select One)

15 to 30 psig / 1.0 to 2.1 bar, Yellow***

25 to 75 psig / 1.7 to 5.2 bar, Green***

70 to 150 psig / 4.8 to 10.3 bar, Red***

Main Valve Replacement Parts Kit (Optional)

Yes, send one diaphragm cartridge and O-rings kit to

match this order.

Pilot Replacement Parts Kit (Optional)

Yes, send one replacement kit to match this order.

Emerson Type Lr125 Pressure Reducing Liquid Regulator Data Sheet

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