Fisher MR95L - Specifications; Available Constructions; Body and Orifice Sizes; Maximum Cold Working Pressures of Body Size and Materials

MR95 Series
2
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
Type MR95HD: High pressure differential
regulator for 5 to 150 psi / 0.34 to 10.3 bar
differential pressures
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 Body Sizes:
0.631 in. / 16.02 mm orice
1-1/2 and 2 in. / DN 40 and 50 Body Sizes
(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 Materials
(1)
See Table 4
Outlet and Differential Pressure Ranges
(1)
See Table 3
Pressure Registration
Internal or External
Shutoff Classication Per ANSI/FCI 70-3-2004
Metal Seats: Class IV
Elastomer Seats: Class VI or better
PTFE: Class IV
Flow and Sizing Coefcients
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.
Maximum Temperature Ranges of Diaphragm and
Seat Materials
(1)(2)
MATERIAL TEMPERATURE RANGE
Nitrile (NBR)
Neoprene (CR)
Fluorocarbon (FKM)
(3)
Ethylenepropylene (EPDM)
Peruoroelastomer (FFKM)
Polytetrauoroethylene (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
LCC Steel
Stainless steel
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
Relief Sizing Coefcients for MR95 Series
Regulators with Reduced Flow Orices
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
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
Monel
®
is a mark owned by Special Metals Corporation.
Hastelloy
®
C is a mark owned by Haynes International, Inc.