Data Sheet
Bulletin 71.4:MR98
16
Table 9. Steam Relief Capacities in Lbs per Hour / kg/h, Types MR98L and MR98LD with Metal Diaphragm Only
- continued -
NOMINAL
BODY SIZE,
In. / DN
SPRING RELIEF
PRESSURE RANGE
COLOR
CODE
RELIEF
PRESSURE
SETTING
PRESSURE BUILD-UP OVER RELIEF SETTING, psig / bar
2 / 0.14 4 / 0.28 8 / 0.55
psi bar psig bar lbs/h kg/h lbs/h kg/h lbs/h kg/h lbs/h kg/h lbs/h kg/h
1/4 NPT
2 to 7 0.14 to 0.48 Yellow
2 0.14 13 5.85 22 10.1 31 14.3 39 17.6 46 20.9
5 0.34 15 6.64 24 11 34 15.3 42 18.9 49 22.5
6 to 14 0.41 to 0.97 Green 10 0.69 13 5.78 22 10.2 32 14.6 41 18.6 50 22.6
12 to 25 0.83 to 1.7 Red
15 1.0 12 5.49 21 9.58 30 13.6 39 17.5 47 21.4
20 1.4 14 6.52 25 11.2 35 15.9 44 20.1 53 24.2
25 1.7 16 7.1 26 12 37 16.9 47 21.3 56 25.6
20 to 38 1.4 to 2.6 Blue
25 1.7 15 6.76 24 10.7 32 14.7 41 18.6 50 22.6
30 2.1 17 7.66 26 11.8 35 15.9 44 20 53 24.1
35 2.4 18 8.21 28 12.6 37 17 47 21.2 56 25.3
1/2 / 15
2 to 7 0.14 to 0.48 Yellow
2 0.14 66 29.9 83 37.9 100 45.8 110 52.1 130 58.3
5 0.34 88 40 110 48.1 120 55.9 140 61.6 150 67
6 to 14 0.41 to 0.97 Green 10 0.69 78 35.4 100 47 130 58.6 140 65.8 160 73
12 to 25 0.83 to 1.7 Red
15 1.0 44 20.1 75 34.1 110 48 130 57.1 150 66.2
20 1.4 64 29.2 100 46.2 140 63 160 71.9 180 80.7
25 1.7 65 29.5 100 47.7 140 65.9 170 76.5 190 87.1
20 to 38 1.4 to 2.6 Blue
25 1.7 54 24.7 100 45.4 150 66 180 83 220 100
30 2.1 64 29.1 110 51.6 160 74.2 200 91.7 240 109
35 2.4 71 32.1 120 55.9 180 79.7 220 99 260 118
3/4 and 1 /
20 and 25
2 to 7 0.14 to 0.48 Yellow
2 0.14 88 40 130 57 160 73.9 190 87.2 220 100
5 0.34 120 53.1 150 70.4 190 87.5 220 100 250 112
6 to 14 0.41 to 0.97 Green 10 0.69 120 52.8 170 77.2 220 102 260 117 290 133
12 to 25 0.83 to 1.7 Red
15 1.0 110 50 160 74.7 220 99.3 260 117 300 135
20 1.4 110 49.5 170 77.2 230 105 280 125 320 145
25 1.7 110 50.1 180 80.1 240 110 290 131 340 153
20 to 38 1.4 to 2.6 Blue
25 1.7 91 41.3 150 67.5 210 93.7 250 113 290 133
30 2.1 100 45.6 160 72.2 220 98.7 260 120 310 141
35 2.4 110 49.1 170 75.3 220 102 270 124 320 146