Maximum Cold Working Pressures Of Body Size And Material; Types Mr95Ld And Mr95Hd Flow And Sizing Coefficients - Fisher MR95L Instruction Manual

MR95 Series
TYPE BODY SIZE
MR95L and All available
MR95LD sizes
(3)
MR95H and All available
MR95HD sizes
(3)
All available
MR95HP
sizes
(3)
1/4 NPT and
1/2 to 1 in. /
DN 15 to 25
MR95HT
1-1/2 and 2 in. /
DN 40 and 50
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.
BODY SIZE
In. DN
1/4 - - - -
1/2 15
3/4 and 1 20 and 25
1-1/2 and 2 40 and 50
K = F 2
m L
Table 6. Relief Sizing Coefficients for MR95 Series Regulators with Reduced Flow Orifices
BODY SIZE
In.
1/4
1/2
3/4 and 1
1-1/2 and 2
1. The reduced flow orifice option offers similar flow capacity as the equivalent 95 series configuration.
Monel is a mark owned by Special Metals Corporation.
®
Hastelloy C is a mark owned by Haynes International, Inc.
®
10
Table 4. Maximum Cold Working Pressures of Body Size and Material
BODY MATERIALS
Gray cast iron
WCC Steel
LCC Steel
CF8M Stainless Steel
CF3M Stainless Steel
Monel
®(4)
Hastelloy C
® (4)
Gray cast iron
WCC Steel
LCC Steel
CF8M Stainless Steel
CF3M Stainless Steel
Monel
®(4)
Hastelloy C
® (4)
Aluminum-Bronze
(4)
WCC Steel
LCC Steel
CF8M Stainless Steel
CF3M Stainless Steel
Monel
®(4)
Hastelloy C
® (4)
Aluminum-Bronze
(4)
WCC Steel
LCC Steel
CF8M Stainless Steel
CF3M Stainless Steel
Monel
®(4)
Hastelloy C
® (4)
Aluminum-Bronze
(4)
WCC Steel
LCC Steel
CF8M Stainless Steel
CF3M Stainless Steel
Monel
®
Hastelloy C
®
Aluminum-Bronze
Table 5. Types MR95LD and MR95HD Flow and Sizing Coefficients
WIDE-OPEN COEFFICIENTS
(FOR RELIEF SIZING)
C C
v g
1.1 37 1.85
2.9 103 5.15
6.0 221 11.05
18.1 700 35.00
DN
- - - -
15
20 and 25
40 and 50
MAXIMUM INLET
PRESSURE
psig bar
250 17.2
300 20.7
300 20.7
300 20.7
300 20.7
300 20.7
300 20.7
250 17.2
300 20.7
300 20.7
300 20.7
300 20.7
300 20.7
300 20.7
300 20.7
1000 68.9
1000 68.9
1000 68.9
1000 68.9
1000 68.9
1000 68.9
1000 68.9
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
600 41.4
C K
1 m
C
s
33.6 0.74
35.5 0.79
36.8 0.88
38.7 0.88
WIDE-OPEN COEFFICIENTS FOR
MR95 SERIES REDUCED FLOW OPTION
C
g
28
70
156
482
(1)(2)
MAXIMUM OUTLET MAXIMUM SPRING CASE
PRESSURE PRESSURE
psig bar psig
50 3.4 50
125 8.6 125
125 8.6 125
125 8.6 125
125 8.6 125
125 8.6 125
125 8.6 125
250 17.2 250
300 20.7 300
300 20.7 300
300 20.7 300
300 20.7 300
300 20.7 300
300 20.7 300
300 20.7 300
600 41.4 300
600 41.4 300
550 37.9 300
550 37.9 300
550 37.9 300
550 37.9 300
550 37.9 300
600 41.4 300
600 41.4 300
550 37.9 300
550 37.9 300
550 37.9 300
550 37.9 300
550 37.9 300
450 31.0 300
450 31.0 300
450 31.0 300
450 31.0 300
450 31.0 300
450 31.0 300
450 31.0 300
IEC SIZING COEFFICIENTS
X F
T D
0.715 0.62
0.797 0.70
0.857 0.68
0.945 0.65
(1)
WIDE-OPEN COEFFICIENTS FOR
LEGACY 95 SERIES
C
28
67
156
475
bar
3.4
8.6
8.6
8.6
8.6
8.6
8.6
17.2
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
20.7
F
L
0.86
0.89
0.94
0.94
g