Fisher MR95L - Maximum Cold Working Pressures of Body Size and Material; Types MR95 LD and MR95 HD Flow and Sizing Coefficients

MR95 Series
10
Table 4. Maximum Cold Working Pressures of Body Size and Material
(1)(2)
Table 5. Types MR95LD and MR95HD Flow and Sizing Coefficients
BODY SIZE
WIDE-OPEN COEFFICIENTS
(FOR RELIEF SIZING)
C
1
K
m
IEC SIZING COEFFICIENTS
In. DN C
v
C
g
C
s
X
T
F
D
F
L
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
K
m
= F
L
2
TYPE BODY SIZE BODY MATERIALS
MAXIMUM INLET
PRESSURE
MAXIMUM OUTLET
PRESSURE
MAXIMUM SPRING CASE
PRESSURE
psig bar psig bar psig bar
MR95L and
MR95LD
All available
sizes
(3)
Gray cast iron 250 17.2 50 3.4 50 3.4
WCC Steel 300 20.7 125 8.6 125 8.6
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
®(4)
300 20.7 125 8.6 125 8.6
Hastelloy
®
C
(4)
300 20.7 125 8.6 125 8.6
MR95H and
MR95HD
All available
sizes
(3)
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
CF8M Stainless Steel 300 20.7 300 20.7 300 20.7
CF3M Stainless Steel 300 20.7 300 20.7 300 20.7
Monel
®(4)
300 20.7 300 20.7 300 20.7
Hastelloy
®
C
(4)
300 20.7 300 20.7 300 20.7
Aluminum-Bronze
(4)
300 20.7 300 20.7 300 20.7
MR95HP
All available
sizes
(3)
WCC Steel 1000 68.9 600 41.4 300 20.7
LCC Steel 1000 68.9 600 41.4 300 20.7
CF8M Stainless Steel 1000 68.9 550 37.9 300 20.7
CF3M Stainless Steel 1000 68.9 550 37.9 300 20.7
Monel
®(4)
1000 68.9 550 37.9 300 20.7
Hastelloy
®
C
(4)
1000 68.9 550 37.9 300 20.7
Aluminum-Bronze
(4)
1000 68.9 550 37.9 300 20.7
MR95HT
1/4 NPT and
1/2 to 1 in. /
DN 15 to 25
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
Monel
®(4)
600 41.4 550 37.9 300 20.7
Hastelloy
®
C
(4)
600 41.4 550 37.9 300 20.7
Aluminum-Bronze
(4)
600 41.4 550 37.9 300 20.7
1-1/2 and 2 in. /
DN 40 and 50
WCC Steel 600 41.4 450 31.0 300 20.7
LCC Steel 600 41.4 450 31.0 300 20.7
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
®
600 41.4 450 31.0 300 20.7
Hastelloy
®
C 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 Instruction Manual 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.
Monel
®
is a mark owned by Special Metals Corporation.
Hastelloy
®
C is a mark owned by Haynes International, Inc.
Table 6. Relief Sizing Coefficients for MR95 Series Regulators with Reduced Flow Orifices
(1)
BODY SIZE
WIDE-OPEN COEFFICIENTS FOR
MR95 SERIES REDUCED FLOW OPTION
WIDE-OPEN COEFFICIENTS FOR
LEGACY 95 SERIES
In. DN C
g
C
g
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.