Emerson MR95 Series Instruction Manual page 5

Table 3. Maximum Cold Working Pressures of Body Size and Material
TYPE BODY SIZE
MR95H All available sizes
(3)
DN 15, 40 and 50 /
1/2, 1-1/2 and 2 in.
DN 20 and 25
3/4 and 1 in.
MR95HP
DN15, 40 and 50 /
1/2, 1-1/2 and 2 in.
20 and 25 /
3/4 and 1 in.
DN 15 / 1/2 in.
DN 20 and 25 /
MR95HT
3/4 and 1 in.
DN 40 and 50 /
1-1/2 and 2 in.
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.
TRIM MATERIAL SEAT
Nitrile (NBR)

Neoprene (CR)
Fluorocarbon (FKM)
(3) 
Ethylenepropylene (EPDM)

Perfluoroelastomer (FFKM)

PTFE

Metal

Composition
(5)
Graphite
1. The pressure/temperature limits in this Bulletin and any applicable standard limitation should not be exceeded.
2. The temperature limits given are based on the body size and body materials only. Actual temperature limits of the assembled regulator may decrease and vary depending on the body end
connection, diaphragm, seat and/or trim material of the regulator.
3. Not for use on steam service.
4. Meets API 614 requirements (with Stainless steel trim).
5. Temperature rating can be increased up to 232°C / 450°F but may require increased gasket maintenance.
BODY SIZE
DN In.
15 1/2
20 and 25 3/4 and 1
40 and 50 1-1/2 and 2
K = F
2
m L
Table 6. Relief Sizing Coefficients for MR95 Series Regulators with Reduced Flow Orifices
DN
15
20 and 25
40 and 50
1. The reduced flow orifice option offers similar flow capacity as the equivalent 95 Series configuration.
END
BODY MATERIAL
CONNECTION
All 1.4408 Stainless steel
G Thread
1.4408 Stainless steel
PN
G Thread
PN
G Thread
1.4408 Stainless steel
PN
G Thread
PN
Table 4. MR95 Series Temperature Capabilities
DIAPHRAGM O-RING


 
 


BODY MATERIAL
1.4408 Stainless
(4)
Table 5. Flow and Sizing Coefficients for all MR95 Series Regulators
WIDE-OPEN COEFFICIENT
(FOR RELIEF SIZING)
C C
v g
2.9 103
6.0 221
18.1 700
BODY SIZE
In.
1/2
3/4 and 1
1-1/2 and 2
MR95 Series - AD2000 Compliant
– According to ASME B & PVC, UG 101 (k):
(1)(2)
MAXIMUM
INLET PRESSURE
bar psig
37.2 539
96.6 1400
47.8 693
83.3 1207
56.1 814
83.3 1207
56.1 814
83.3 1207
56.1 814
DIAPHRAGM
GASKET
PROTECTOR



C K
1
C
s
5.15 35.5 0.79
11.05 36.8 0.88
35.00 38.7 0.88
WIDE-OPEN COEFFICIENT FOR
MR95 SERIES REDUCED FLOW OPTION
C
g
70
156
482
MAXIMUM
OUTLET PRESSURE SPRING CASE PRESSURE
bar psig
37.2 539
53.1 770
41.8 606
47.8 693
42.6 618
76.2 1105
56.1 814
42.0 610
43.0 624
62.3 904
56.1 814
(1)(2)
TEMPERATURE
°C
-40 to 82
-40 to 82
-18 to 149,
Limited to 93°C for hot water Limited to 200°F for hot water
-7 to 135
-18 to 218
-40 to 204
-40 to 343
-40 to 208,
-40 to 343
TEMPERATURE
°C
-40 to 288
IEC SIZING COEFFICIENT
m
X F
T D
0.797 0.70
0.857 0.68
0.945 0.65
(1)
WIDE-OPEN COEFFICIENT FOR LEGACY
95 SERIES
MAXIMUM
bar psig
37.2 539
53.1 770
41.8 606
47.8 693
42.6 618
76.2 1105
56.1 814
42.0 610
43.0 624
62.3 904
56.1 814
°F
-40 to 180
-40 to 180
0 to 300,
20 to 275
0 to 425
-40 to 400
-40 to 650
-40 to 406,
-40 to 650
°F
-40 to 550
F
L
0.89
0.94
0.94
C
g
67
156
475
5