Data Sheet
Bulletin 71.4:MR98
13
Table 7. Water Relief Capacities in Gallons per Minute / L/min, Types MR98L and MR98LD with Elastomer Diaphragm (continued)
NOMINAL
BODY SIZE,
In. / DN
SPRING
RELIEF PRESSURE RANGE
COLOR
CODE
RELIEF PRESSURE
SETTING
PRESSURE BUILD-UP OVER RELIEF SETTING, psig / bar
15 / 1.0 20 / 1.4 30 / 2.1
psi bar psig bar GPM l/min GPM l/min GPM l/min GPM l/min
1/4 NPT
2 to 7 0.14 to 0.48 Yellow
2 0.14 5.4 20.4 6.3 23.8 6.9 26.1 7.5 28.4
5 0.34 5.9 22.3 6.6 25 7.3 27.4 7.9 29.9
6 to 14 0.41 to 0.97 Green 10 0.69 6.6 25 7.4 28 8 30.1 8.5 32.2
12 to 25 0.83 to 1.7 Red
15 1.0 7.2 27 7.9 29.9 8.5 32.2 9.1 34.4
20 1.4 7.9 29.7 8.5 32.2 9.1 34.2 9.6 36.3
25 1.7 8.4 31.6 9.1 34.4 9.6 36.1 10 37.8
20 to 38 1.4 to 2.6 Blue
25 1.7 8.3 31.4 9.1 34.4 9.6 36.1 10 37.8
30 2.1 8.7 32.9 9.5 35.9 10 38 11 40.1
35 2.4 9.1 34.2 9.9 37.5 10 39.3 11 41.2
1/2 / 15
2 to 7 0.14 to 0.48 Yellow
2 0.14 13 49 15 56.4 17 62.8 18 69.2
5 0.34 14 53.5 16 60.9 18 67 19 73
6 to 14 0.41 to 0.97 Green 10 0.69 16 61.3 18 68.1 19 73.2 21 78.3
12 to 25 0.83 to 1.7 Red
15 1.0 18 68.1 19 73 21 77.7 22 82.5
20 1.4 19 73.2 21 77.9 22 82.7 23 87.4
25 1.7 21 78.1 22 82.8 23 87.2 24 91.5
20 to 38 1.4 to 2.6 Blue
25 1.7 19 71.9 22 82.5 23 87.4 24 92.3
30 2.1 20 75.3 23 85.5 24 90.8 25 96.1
35 2.4 21 78.9 24 89.7 25 95 27 100
3/4 and 1 /
20 and 25
2 to 7 0.14 to 0.48 Yellow
2 0.14 25 93.6 29 109 32 121 35 134
5 0.34 27 104 31 117 34 128 37 140
6 to 14 0.41 to 0.97 Green 10 0.69 31 117 34 130 37 140 40 150
12 to 25 0.83 to 1.7 Red
15 1.0 34 128 37 140 40 150 42 160
20 1.4 37 138 40 150 42 159 45 169
25 1.7 39 147 42 160 45 168 47 177
20 to 38 1.4 to 2.6 Blue
25 1.7 38 142 42 160 44 168 47 177
30 2.1 40 150 44 168 47 176 49 185
35 2.4 42 158 47 176 49 184 51 193
Universal NACE Compliance
Optional materials are available for applications
handling sour gases. These constructions comply
with the recommendations of NACE International sour
service standards.
The manufacturing processes and materials used
by Emerson™ assure that all products specied
for sour gas service comply with the chemical,
physical and metallurgical requirements of NACE
MR0175-2002 and/or NACE MR0103. Optional
materials are available to meet ANSI/NACE MR0175/
ISO 15156, please contact your local Sales Ofce
for special ordering instructions. Customers have
the responsibility to specify correct materials.
Environmental limitations may apply and shall be
determined by the user.