Data Sheet

Bulletin 71.4:MR98
15
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 4.9 18.3 5.7 21.6 6.4 24.2 7.1 26.9
5 0.34 5.2 19.7 6.1 23.1 6.7 25.3 7.3 27.6
6 to 14 0.41 to 0.97 Green 10 0.69 5.7 21.6 6.6 25 7.2 27.2 7.8 29.5
12 to 25 0.83 to 1.7 Red
15 1.0 6 22.7 6.8 25.7 7.4 28 8 30.3
20 1.4 6.4 24.2 7.2 27.2 7.9 29.9 8.6 32.5
25 1.7 6.7 25.3 7.5 28.4 8.1 30.6 8.7 32.9
20 to 38 1.4 to 2.6 Blue
25 1.7 6.4 24 7.2 27.2 7.9 29.7 8.5 32.2
30 2.1 6.7 25.3 7.5 28.4 8.2 30.8 8.8 33.3
35 2.4 7.1 26.9 8 30.3 8.7 32.9 9.4 35.6
1/2 / 15
2 to 7 0.14 to 0.48 Yellow
2 0.14 13 48.8 15 57.9 17 64.3 19 70.7
5 0.34 14 52.8 16 60.9 18 67.3 20 73.8
6 to 14 0.41 to 0.97 Green 10 0.69 15 56.7 17 64.7 19 70.7 20 76.8
12 to 25 0.83 to 1.7 Red
15 1.0 16 59.8 18 67.7 19 73.4 21 79.1
20 1.4 17 63.9 19 71.9 20 77.4 22 82.8
25 1.7 18 67.1 20 74.9 21 80.4 23 85.9
20 to 38 1.4 to 2.6 Blue
25 1.7 16 58.6 18 68.1 20 74.3 21 80.6
30 2.1 16 61.1 19 71.1 20 77.4 22 83.6
35 2.4 17 62.4 19 72.6 21 79.3 23 85.9
3/4 and 1 /
20 and 25
2 to 7 0.14 to 0.48 Yellow
2 0.14 23 88.1 27 104 30 115 34 127
5 0.34 25 95 29 110 32 122 35 133
6 to 14 0.41 to 0.97 Green 10 0.69 27 104 32 119 34 130 37 141
12 to 25 0.83 to 1.7 Red
15 1.0 27 103 31 118 34 130 37 142
20 1.4 29 109 33 124 36 136 39 148
25 1.7 30 114 34 129 37 141 40 152
20 to 38 1.4 to 2.6 Blue
25 1.7 30 113 34 129 37 141 41 154
30 2.1 31 116 35 133 39 146 42 158
35 2.4 31 119 36 137 40 150 43 162
Table 8. Water Relief Capacities in Gallons per Minute / L/min, Types MR98L and MR98LD with Metal Diaphragm (continued)