Emerson MR95 Data Sheet

Bulletin 71.1:MR95

December 2014

MR95 Series Industrial Pressure Regulators

P1757

TYPE MR95L

PRESSURE REDUCING REGULATORS

Figure 1. Typical MR95 Series Industrial Pressure Regulators

P1753

TYPE MR95H

www.fisherregulators.com

D103742X012

Bulletin 71.1:MR95

Specications

This section lists the specications for the MR95 Series regulators. Factory specication such as type, maximum inlet
pressure, maximum temperature, maximum outlet pressure, spring range, orice 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 Orice Sizes

1/4 NPT body:

0.284 in. / 7.22 mm orice

1/2 in. / DN 15 body:

0.416 in. / 10.56 mm orice

3/4 and 1 in. / DN 20 and 25 bodies:

0.631 in. / 16.02 mm orice

1-1/2 and 2 in. / DN 40 and 50 bodies

(not available for Types MR95L and MR95LD):

1.142 in. / 29 mm orice

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 anges (for welded
end connections) and are 14 in. face-to-face
(EN anged-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

Fluorocarbon (FKM)
Ethylenepropylene (EPDM)
Peruoroelastomer (FFKM)

Polytetrauoroethylene (PTFE)

Stainless steel (SST)

(1)(2)

MATERIAL TEMPERATURE RANGE

Nitrile (NBR)

Neoprene (CR)

(3)

-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

SPRING CASE MATERIALS

Aluminum-Bronze

(1)(2)

BODY AND

Gray Cast Iron

WCC steel

LCC steel

Stainless steel

®

Monel

Hastelloy® C

TEMPERATURE RANGE

(4)

(4)

(4)

-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 Classication Per ANSI/FCI 70-3-2004

Metal Seats: Class IV
Elastomer Seats: Class VI or better

PTFE: Class lV
Flow and Sizing Coefcients

See Table 5

Relief Sizing Coefcients for MR95 Series Regulators
with Reduced Flow Orices

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

Specications (continued)

Bulletin 71.1:MR95

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

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 congurations.
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 xtures, 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
uid compatibility.

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

• Differential Pressure Capability—Spring-loaded

Polytetrauoroethylene (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 ows.

• 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 orice,
restricting uid ow 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 orice. This allows uid ow 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)

Type 95HD Differential Pressure Reducing Regulator

M1006

October 2006

Type 95HD

HANDWHEEL

CONTROL SPRING

PRESSURE A*
(SPRING CASE
LOADING
PRESSURE)

Bulletin 71.1:MR95

DIAPHRAGM

PITOT TUBE

STEM

ORIFICE

VALVE PLUG

FRONT AND INTERNAL VIEW OF

TYPE MR95HD WITH INTERNAL PRESSURE REGISTRATION

PRESSURE A +
SPRING SETTING =
PRESSURE B

PRESSURE B
(OUTLET
PRESSURE)

TYPE MR95HD WITH EXTERNAL PRESSURE REGISTRATION

BACK VIEW OF

SPRING

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 DIAPHRAGMS

SPRING

GASKET

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

WITH METAL DIAPHRAGM

CONTROL LINE TAP

METAL DIAPHRAGM

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

BODY SIzE BODY CONSTRUCTION END CONNECTION

1/4 NPT Without Control Line and Gauge Port NPT

Without Control Line and Gauge Port

1/2 in. / DN 15

With Control Line but Without Gauge Port

Without Control Line and Gauge Port

3/4 in. / DN 20

1 in. / DN 25

- Shaded areas indicate that the construction is available.

- Blank areas indicate that you need to contact your local Sales Ofce for the availability of the constructions.

With Control Line but Without Gauge Port

With Gauge Port but Without Control Line

Without Control Line and Gauge Port

With Control Line but Without Gauge Port

With Gauge Port but Without Control Line

NPT

SWE

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

BODY MATERIAL

Gray Cast Iron

LCC or WCC Steel

CF8M Stainless Steel

CF3M Stainless Steel

C

®

or Hastelloy

®

Monel

®

is a mark owned by Special Metals Corporation.

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

6

Table 2. Types MR95H, MR95HD, MR95HT and MR95HP Regulators Body Constructions

BODY SIzE

1/4 NPT Without Gauge Port and Control Line NPT

Without Control Line and Gauge Port

1/2 in. / DN 15

With Control Line but Without Gauge Port

Without Gauge Port and Control Line

3/4 in. / DN 20

With Control Line but Without Gauge Port

With Gauge Port but Without Control Line

1 in. / DN 25 Without Gauge Port and Control Line

- Shaded areas indicate that the construction is available.

- Blank areas indicate that you need to contact your local Sales Ofce for the availability of the constructions.

1. Gray cast iron body material is available for Types MR95H and MR95HD only.

BODY

CONSTRUCTION

END CONNECTION

Welded CL150 RF

Welded CL300 RF

Welded CL600 RF

Welded PN 16/25/40 RF

Integral CL150 RF

Integral CL300 RF

Integral CL600 RF

Integral PN 16/25/40 RF

Welded CL150 RF

Welded CL300 RF

Welded CL600 RF

Welded PN 16/25/60 RF

Welded CL150 RF

Welded CL300 RF

Welded CL600 RF

Welded PN 16/25/40 RF

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/60 RF

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/60 RF

Welded CL150 RF

Welded CL300 RF

Welded CL600 RF

Welded PN 16/25/40 RF

Integral CL150 RF

Integral CL300 RF

Integral CL600 RF

Integral PN 16/25/40 RF

Bulletin 71.1:MR95

BODY MATERIAL

C

®

or Hastelloy

®

CF8M Stainless Steel

CF3M Stainless Steel

Monel

NPT

SWE

NPT

NPT

SWE

NPT

NPT

NPT

SWE

(1)

Gray Cast Iron

LCC or WCC Steel

Aluminum-Bronze

®

Monel

is a mark owned by Special Metals Corporation.

Hastelloy® C is a mark owned by Haynes International, Inc.

- continued -

7

Bulletin 71.1:MR95

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

BODY SIzE

With Control Line but Without Gauge Port

1 in. / DN 25

With Gauge Port but Without Control Line

Without Gauge Port and Control Line

1-1/2 in. / DN 40

With Control line but Without Gauge Port

With Gauge Port but Without Control Line

Without Gauge Port and Control Line

2 in. / DN 50

With Control Line but Without Gauge Port

With Gauge Port but Without Control Line

- Shaded areas indicate that the construction is available.

- Blank areas indicate that you need to contact your local Sales Ofce for the availability of the constructions.

1. Gray cast iron body material is available for Types MR95H and MR95HD only.

BODY

CONSTRUCTION

END CONNECTION

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

Welded CL600 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

Welded CL600 RF

Welded PN 16/25/40 RF

Integral CL150 RF

Integral CL300 RF

Integral CL600 RF

Integral PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

BODY MATERIAL

(1)

Gray Cast Iron

LCC or WCC Steel

CF8M Stainless Steel

C

®

or Hastelloy

®

Aluminum-Bronze

CF3M Stainless Steel

Monel

®

Monel

is a mark owned by Special Metals Corporation.

Hastelloy® C is a mark owned by Haynes International, Inc.

8

Bulletin 71.1:MR95

Table 3. Body Sizes, Pressure Ranges and Spring Information

TYPE

MR95L

and

MR95LD

MR95H

and

MR95HD

MR95HT

MR95HP

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.

BODY SIzE

In. DN psi/psig bar In. mm In. mm

1/4 - - - -

1/2 15

3/4

and 1

3/4

and 1

1/4 - - - -

1/2 15

3/4

and 1

3/4

and 1

1-1/2
and 2

1/4 - - - -

1/2 15

3/4

and 1

1-1/2

and 2

1/4 - - - -

1/2 15

3/4

and 1

1-1/2

and 2

OUTLET OR DIFFERENTIAL

PRESSURE RANGE

2 to 6 0.14 to 0.41 0.148 3.76 2.00 50.8 Zinc-plated steel 1E392527022 Yellow

5 to 15 0.34 to 1.0 0.170 4.32 2.00 50.8 Zinc-plated steel ERAA01888A0 Green

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

5 to 15 0.34 to 1.0 0.234 5.94 2.60 65.9 Powder-coated steel ERAA01910A0 Green

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

20

and 25

and 25

and 25

and 25

and 50

and 25

and 50

and 25

and 50

5 to 15 0.34 to 1.0 0.343 8.71 4.00 102 Powder-coated steel 1E399027142 Green

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

20

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

20

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

20

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

40

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

80 to 300 5.5 to 20.7 0.281 7.14 2.00 50.8 Inconel

15 to 100 1.0 to 6.9 0.281 7.14 2.50 63.5 Inconel

80 to 300 5.5 to 20.7 0.375 9.53 2.60 66.0 Inconel

15 to 100 1.0 to 6.9 0.437 11.1 4.08 104 17-4 PH Stainless steel ERCA04295A0 Unpainted

20

80 to 300 5.5 to 20.7 0.562 14.3 4.08 104 17-4 PH Stainless steel ERCA04296A0 Unpainted

15 to 100 1.0 to 6.9 0.625 15.9

40

60 to 260 4.1 to 17.9 0.812 20.6 6.70 170 17-4 PH Stainless steel ERCA04298A0 Unpainted

15 to 100 1.0 to 6.9 0.192 4.88 2.00 50.8 Inconel

80 to 400 5.5 to 27.6 0.281 7.14 2.00 50.8 Inconel

15 to 100 1.0 to 6.9 0.281 7.14 2.50 63.5 Inconel

80 to 400 5.5 to 27.6 0.375 9.53 2.60 66.0 Inconel

15 to 100 1.0 to 6.9 0.437 11.1 4.08 104 17-4 PH Stainless steel ERCA04295A0 Unpainted

20

80 to 400 5.5 to 27.6 0.562 14.3 4.08 104 17-4 PH Stainless steel ERCA04296A0 Unpainted

15 to 100 1.0 to 6.9 0.625 15.9 6.70 170 17-4 PH Stainless steel ERCA04297A0 Unpainted

40

60 to 300 4.1 to 20.7 0.812 20.6 6.70 170 17-4 PH Stainless steel ERCA04298A0 Unpainted

(1)

SPRING WIRE

DIAMETER

SPRING FREE

LENGTH

6.70 170 17-4 PH Stainless steel ERCA04297A0 Unpainted

SPRING

MATERIAL

(2)

®

®

®

®

®

®

®

®

SPRING PART

NUMBER

Light Blue Stripe

ERCA04292A0 Unpainted

ERCA04291A0 Unpainted

ERCA04294A0 Unpainted

ERCA04293A0 Unpainted

ERCA04292A0 Unpainted

ERCA04291A0 Unpainted

ERCA04294A0 Unpainted

ERCA04293A0 Unpainted

SPRING

COLOR

Black with

®

is a mark owned by Special Metals Corporation.

Inconel

9

Bulletin 71.1:MR95

Table 4. Maximum Cold Working Pressures of Body Size and Material

TYPE BODY SIzE BODY MATERIAL

MAXIMUM INLET PRESSURE MAXIMUM OUTLET PRESSURE

(1)(2)

MAXIMUM SPRING CASE

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

MR95L and MR95LD All available sizes

(3)

LCC Steel 300 20.7 125 8.6 125 8.6
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

Hastelloy

®(4)

® C(4)

300 20.7 125 8.6 125 8.6
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

MR95H and

MR95HD

All available sizes

(3)

CF8M Stainless steel 300 20.7 300 20.7 300 20.7
CF3M Stainless steel 300 20.7 300 20.7 300 20.7

Aluminum-Bronze

Monel

Hastelloy

®(4)

® C(4)

300 20.7 300 20.7 300 20.7

(4)

300 20.7 300 20.7 300 20.7
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

MR95HP All available sizes

(3)

CF8M Stainless steel 1000 68.9 550 37.9 300 20.7
CF3M Stainless steel 1000 68.9 550 37.9 300 20.7

Aluminum-Bronze

Monel

Hastelloy

®(4)

® C(4)

1000 68.9 550 37.9 300 20.7

(4)

1000 68.9 550 37.9 300 20.7
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
CF3M Stainless steel 600 41.4 550 37.9 300 20.7

Aluminum-Bronze

Monel

Hastelloy

®(4)

® C(4)

600 41.4 550 37.9 300 20.7

(4)

600 41.4 550 37.9 300 20.7
600 41.4 550 37.9 300 20.7

WCC Steel 600 41.4 450 31.0 300 20.7

MR95HT

1/4 NPT and
1/2 to 1 in. /

DN 15 to 25

LCC Steel 600 41.4 450 31.0 300 20.7

1-1/2 and 2 in. /

DN 40 and 50

CF8M Stainless steel 600 41.4 450 31.0 300 20.7
CF3M Stainless steel 600 41.4 450 31.0 300 20.7

®

Monel

®

Hastelloy

C 600 41.4 450 31.0 300 20.7

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.

Table 5. Flow and Sizing Coefcients for all MR95 Series Regulators

BODY SIzE

In. DN C

1/4 - - - - 1.1 37 1.85 33.6 0.74 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

2

K

= F

m

L

Table 6. Relief Sizing Coefcients for MR95 Series Regulators with Reduced Flow Orices

In. DN C

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 ow orice option offers similar ow capacity as the equivalent 95 series conguration.

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

10

WIDE-OPEN COEFFICIENTS

(FOR RELIEF SIZING)

v

C

g

C

s

C

1

K

m

(1)

BODY SIzE WIDE-OPEN COEFFICIENTS FOR

MR95 SERIES REDUCED FLOW OPTION

g

IEC SIZING COEFFICIENTS

X

T

WIDE-OPEN COEFFICIENTS FOR

F

D

LEGACY 95 SERIES

C

g

F

L