44
Control systems Safety valves
Capacity Table - Steam - 10% Overpressure - kg/h
Orifice Designation / Current Area (cm²)
Set pressure (bar g)
F R 2.112 3.464 5.433 8.867 12.69 19.71 24.81 29.90 44.06 76.20 110.47 1.0 210 345 541 883 1264 1963 2471 2978 4389 7590 11004 1.5 258 423 663 1082 1549 2405 3028 3649 5377 9299 13482 2.0 305 500 785 1281 1833 2848 3584 4320 6366 11009 15960 2.5 357 585 917 1497 2143 3328 4189 5048 7439 12865 18651 3.0 409 670 1051 1716 2456 3814 4801 5786 8526 14746 21378 3.5 461 756 1185 1935 2769 4301 5413 6524 9614 16626 24104 4.0 513 841 1320 2154 3082 4787 6026 7262 10701 18507 26830 4.5 565 927 1454 2372 3395 5273 6638 8000 11788 20387 29556 5.0 617 1012 1588 2591 3708 5760 7250 8737 12875 22267 32282 5.5 669 1098 1722 2810 4021 6246 7862 9475 13963 24148 35008 6.0 721 1183 1856 3029 4335 6733 8475 10213 15050 26028 37734 6.5 774 1269 1990 3248 4648 7219 9087 10951 16137 27909 40460 7.0 826 1354 2124 3466 4961 7705 9699 11689 17225 29789 43186 7.5 878 1440 2258 3685 5274 8192 10311 12427 18312 31670 45912 8.0 930 1525 2392 3904 5587 8678 10924 13165 19399 33550 48639 8.5 982 1611 2526 4123 5900 9164 11536 13902 20486 35430 51365 9.0 1034 1696 2660 4342 6214 9651 12148 14640 21574 37311 54091 9.5 1086 1782 2794 4560 6527 10137 12760 15378 22661 39191 56817 10 1138 1867 2928 4779 6840 10624 13373 16116 23748 41072 59543 12 1347 2209 3465 5655 8092 12569 15821 19067 28097 48593 70447 14 1555 2551 4001 6530 9345 14515 18270 22019 32446 56115 81352 16 1764 2893 4537 7405 10598 16460 20719 24970 36796 63636 92256 18 1972 3235 5074 8280 11850 18406 23168 27922 41145 71158 103161 20 2181 3577 5610 9156 13103 20351 25617 30873 45494 78680 114065 20.7 2254 3696 5798 9462 13541 21032 26475 31906 47016 81312 117882 G H J K L M N P Q
4.7 22
For sizing using current areas (ASME), the discharge coefficient K for steam is 0.853.
TI-P710-01 CTLS Issue 1
Page 8 of 13
SV44H Carbon Steel Safety Valve
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