3.10.5 Feed Water Valve Sizing Calculations
Autoflame Part No. WLCV015 - ½” feed water valve water flow calculations @20°C
Water Velocity Pressure Drop Across Valve Water Flow Rate Steam Flow Rate
Ft/sec M/sec ∆P PSI ∆P Bar G/hr (imp) GPM (imp) US GPM lbs/hr Kg/hr
6 1.82 1 0.07 160 2.6 3.2 1600 727
9 2.74 2 0.14 235 3.9 4.7 2350 1068
15 4.57 5 0.34 380 6.3 7.6 3800 1727
21 6.40 10 0.68 560 9.3 11.2 5600 2545
26 7.90 15 1.03 700 11.6 14 7000 3182
32 9.73 20 1.38 820 13.6 16.4 8200 3727
Autoflame Part No. WLCV020 - ¾” feed water valve water flow calculations @20°C
Water Velocity Pressure Drop Across Valve Water Flow Rate Steam Flow Rate
Ft/sec M/sec ∆P PSI ∆P Bar G/hr (imp) GPM (imp) US GPM lbs/hr Kg/hr
8 2.43 1 0.07 460 7.7 9.2 4600 2090
12 3.65 2 0.14 665 11 13.3 6650 3022
19 5.79 5 0.34 1100 18.3 22 11000 5000
28 8.53 10 0.68 1630 27.1 32.63 16300 7409
34 10.34 15 1.03 2000 33.3 40 20000 9090
40 12.16 20 1.38 2400 40 48 24000 10909
Autoflame Part No. WLCV025 - 1” feed water valve water flow calculations @20°C
Water Velocity Pressure Drop Across Valve Water Flow Rate Steam Flow Rate
Ft/sec M/sec ∆P PSI ∆P Bar G/hr (imp) GPM (imp) US GPM lbs/hr Kg/hr
13 3.96 1 0.07 1560 26 31.2 15600 7091
21 6.4 2 0.14 2300 38.3 46 23003 10456
32 9.75 5 0.34 3800 63.3 76 38005 17275
46 14.02 10 0.68 5600 93.9 112 56007 25458
60 18.24 15 1.03 7000 116.6 140 70008 31822
70 21.28 20 1.38 8200 136.6 164 82011 37278
Autoflame Part No. WLCV040 – 1 ½” feed water valve water flow calculations @20°C
Water Velocity Pressure Drop Across Valve Water Flow Rate Steam Flow Rate
Ft/sec M/sec ∆P PSI ∆P Bar G/hr (imp) GPM (imp) US GPM lbs/hr Kg/hr
17 5.17 1 0.07 4700 78.3 94 47005 21366
25 7.60 2 0.14 6700 11.6 134 67007 30458
39 11.86 5 0.34 11200 186.6 224 112015 50916
60 18.24 10 0.68 16500 275 330 165022 75010
75 22.80 15 1.03 20000 333.3 400 200028 90922
90 27.36 20 1.38 24000 400 480 240033 109126
Autoflame Part No. WLCV050 - 2” feed water valve water flow calculations @20°C
Water Velocity Pressure Drop Across Valve Water Flow Rate Steam Flow Rate
Ft/sec M/sec ∆P PSI ∆P Bar G/hr (imp) GPM (imp) US GPM lbs/hr Kg/hr
21 6.38 1 0.07 10000 166.6 200 100014 45461
31 9.42 2 0.14 15000 250 300 150020 68191
46 13.99 5 0.34 24000 400 480 240033 109106
72 21.89 10 0.68 36000 600 720 360049 163659
85 25.84 15 1.03 44000 733 880 440061 200028
110 33.44 20 1.38 51000 850 1021 510072 231851