Specifications; Available Constructions; Maximum Temperature Ranges Of Body Materials; Pressure Setting Adjustment - Fisher MR95L Instruction Manual

MR95 Series

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
Type MR95HD: High pressure differential
regulator for 5 to 150 psi / 0.34 to 10.3 bar
differential pressures
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 Body Sizes:
0.631 in. / 16.02 mm orifice
1-1/2 and 2 in. / DN 40 and 50 Body Sizes
(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 Materials
(1)
See Table 4
Outlet and Differential Pressure Ranges
See Table 3
Pressure Registration
Internal or External
Shutoff Classification Per ANSI/FCI 70-3-2004
Metal Seats: Class IV
Elastomer Seats: Class VI or better
PTFE: Class IV
Flow and Sizing Coefficients
See Table 5
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
2. Pressure and/or the body end connection may decrease these maximum temperatures.
3. Fluorocarbon (FKM) is limited to 200°F / 93°C hot water.
Monel is a mark owned by Special Metals Corporation.
®
Hastelloy C is a mark owned by Haynes International, Inc.
®
2
Maximum Temperature Ranges of Diaphragm and
Seat Materials
Fluorocarbon (FKM)
Ethylenepropylene (EPDM)
Perfluoroelastomer (FFKM)
Polytetrafluoroethylene (PTFE)
Stainless Steel (SST)

Maximum Temperature Ranges of Body Materials

BODY AND SPRING CASE MATERIALS
Aluminum-Bronze
Relief Sizing Coefficients for MR95 Series
Regulators with Reduced Flow Orifices
See Table 6

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
Approximate Weights
MR95H Series:
1/4 NPT body: 5 lbs / 2.3 kg
1/2 in. / DN 15 body: 10 lbs / 4.5 kg
(1)
3/4 and 1 in. / DN 20 and 25 Body Sizes:
22 lbs / 10 kg
1-1/2 and 2 in. / DN 40 and 50 Body Sizes:
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 Body Sizes:
35 lbs / 16 kg
(1)(2)
MATERIAL
Nitrile (NBR)
Neoprene (CR)
(3)
-40 to 400°F / -40 to 204°C
-40 to 650°F / -40 to 343°C
Gray Cast Iron -20 to 406°F / -29 to 208°C
WCC Steel -20 to 650°F / -29 to 343°C
LCC Steel -40 to 650°F / -40 to 343°C
Stainless steel -40 to 550°F / -40 to 288°C
Monel -40 to 550°F / -40 to 288°C
®
Hastelloy C -40 to 550°F / -40 to 288°C
®
-40 to 500°F / -40 to 260°C
TEMPERATURE RANGE
-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
(1)(2)
TEMPERATURE RANGE