Data Sheet

Bulletin 71.1:MR95
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 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
(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
(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 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.