44
Control systems Safety valves
Capacity Table - Steam - 10% Overpressure - kg/h (continued)
Orifice Designation / Actual Area (cm²)
Set Pressure (bar g)
F Q 2.116 3.464 5.432 8.864 12.69 16.47 19.70 24.81 29.89 44.06 76.20 G H J K K2 L M N P
34
3,445 6,012 9,428 15,385 22,025 28,586 34,192 43,061 51,878 76,472 132,255
36
3,642 6,357 9,968 16,266 23,287 30,223 36,150 45,527 54,849 80,852 139,830
38
3,839 6,701 10,508 17,147 24,548 31,860 38,108 47,993 57,820 85,231 147,404
40
4,036 7,045 11,048 18,028 25,809 33,497 40,067 50,460 60,791 89,611 154,979
42 4,233 7,390 11,588 18,909 27,071 35,135 42,025 52,926 63,763 93,991 162,553 44 4,430 7,734 12,128 19,790 28,332 36,772 43,983 55,392 66,734 98,370 170,128 46 4,627 8,078 12,668 20,671 29,594 38,409 45,941 57,858 69,705 102,750 177,702 48 4,824 8,423 13,208 21,552 30,855 40,046 47,900 60,324 72,676 107,130 185,277 50 5,021 8,767 13,748 22,434 32,117 41,683 49,858 62,791 75,647 111,510 192,851 55 5,513 9,628 15,098 24,636 35,270 45,776 54,754 68,956 83,075 122,459 60 6,005 10,489 16,447 26,839 38,424 49,869 59,649 75,122 90,503 133,408 65 6,498 11,349 17,797 29,042 41,577 53,962 64,545 81,287 97,931 144,357 70 6,990 12,210 19,147 31,245 44,731 58,055 69,440 87,453 105,359 155,307 75 7,483 13,071 20,497 33,447 47,884 62,148 74,336 93,618 80 7,975 13,932 21,847 35,650 51,038 66,241 79,232 85 8,467 14,793 23,197 37,853 54,192 70,334 84,127
4.7 72
For sizing purpose using the ASME actual areas, the certified coefficient of discharge Kd for air, gas and steam is 0.865 lb/h = Kg/h / 0.4536
TI-P276-01 CTLS Issue 1
Page 12 of 15
SV66H Safety Valve
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