Basic Documentation

Contact Customer Support at 1-888-593-7876 to order today!184
Water Capacity Tables for Globe Valves
Valve Size
Inches
English Pressure Differential
Cv\1 2 psi 3 psi 4 psi 5 psi 6 psi 8 psi 10 psi 15 psi 20 psi 25 psi 30 psi 40 psi 50 psi 60 psi 75 psi
1/2" 0.4 0.6 0.7 0.8 0.9 1.0 1.1 1.3 1.5 1.8 2.0 2.2 2.5 2.8 3.1 3.5
1/2" 0.63 0.9 1.1 1.3 1.4 1.5 1.8 2.0 2.4 2.8 3.2 3.5 4.0 4.5 4.9 5.5
1/2" 1.0 1.4 1.7 2.0 2.2 2.5 2.8 3.2 3.9 4.5 5.0 5.5 6.3 7.1 7.8 8.7
1/2" 1.6 2.3 2.8 3.2 3.6 3.9 4.5 5.1 6.2 7.2 8.0 8.8 10.1 11.3 12.4 13.9
1/2" 2.5 3.5 4.3 5.0 5.6 6.1 7.1 7.9 9.7 11.2 12.5 13.7 15.8 17.7 19.4 22
1/2" 4 5.7 7 8.0 8.9 10 11.3 12.6 15.5 17.9 20.0 21.9 25 28 31 35
3/4" 6.3 8.9 10.9 12.6 14.1 15.4 17.8 20 24 28 32 35 40 45 49 55
1" 10 14.1 17.3 20 22 24 28 32 39 45 50 55 63 71 77 87
1-1/4" 16 23 28 32 36 39 45 51 62 72 80 88 101 113 124 139
1-1/2" 25 35 43 50 56 61 71 79 97 112 125 137 158 177 194 217
2" 40 57 69 80 89 98 113 126 155 179 200 219 253 283 310 346
2-1/2" 63 89 109 126 141 154 178 199 244 282 315 345 398 445 488 546
3" 100 141 173 200 224 245 283 316 387 447 500 548 632 707 775 866
4" 160 226 277 320 358 392 453 506 620 716 800 876 1012 1131 1239 1386
5" 250 354 433 500 559 612 707 791 968 1118 1250 1369 1581 1768 1936 2165
6" 400 566 693 800 894 980 1131 1265 1549 1789 2000 2191 2530 2828 3098 3464
Table is expressed in U.S. gallons per minute (GPM).
Valve Size
mm
Metric Pressure Differential
1 kPa 10 kPa 20 kPa 30 kPa 40 kPa 50 kPa 60 kPa 80 kPa 100 (Kvs) 150 kPa 200 kPa 300 kPa 400 kPa 500 kPa
15 0.03 0.11 0.15 0.19 0.22 0.24 0.26 0.30 0.34 0.42 0.48 0.59 0.68 0.76
15 0.05 0.17 0.24 0.30 0.34 0.38 0.42 0.48 0.54 0.66 0.76 0.94 1.08 1.21
15 0.09 0.27 0.38 0.47 0.54 0.60 0.66 0.76 0.85 1.0 1.2 1.5 1.7 1.9
15 0.14 0.43 0.61 0.75 0.87 0.97 1.06 1.23 1.37 1.7 1.9 2.4 2.7 3.1
15 0.21 0.68 0.96 1.17 1.35 1.51 1.66 1.91 2.15 2.6 3.0 3.7 4.3 4.8
15 0.34 1.1 1.5 1.9 2.2 2.4 2.7 3.1 3.4 4.2 4.9 6.0 6.9 7.7
20 0.54 1.7 2.4 3.0 3.4 3.8 4.2 4.9 5.4 6.7 7.7 9.4 10.9 12.1
25 0.86 2.7 3.8 4.7 5.4 6.1 6.7 7.7 8.6 10.5 12.2 14.9 17.2 19.2
32 1.4 4.4 6.2 7.6 8.7 9.8 10.7 12.3 13.8 16.9 19.5 23.9 27.6 30.9
40 2.2 6.8 9.6 11.8 13.6 15.2 16.7 19.2 22 26 30 37 43 48
50 3.4 10.9 15.4 18.8 22 24 27 31 34 42 49 60 69 77
65 5.4 17.1 24 30 34 38 42 48 54 66 76 94 108 121
80 8.5 27 38 47 54 60 66 76 85 104 120 147 170 190
100 14 43 61 75 87 97 106 123 137 168 194 237 274 306
125 21 68 96 117 135 151 166 191 214 262 303 371 428 479
150 34 108 153 187 216 242 265 306 342 419 484 592 684 765
Table expressed in Cubic Meters per Hour (m
3
/hr).
Table Note:
Cv values of 0.4 to 10 are Powermite globe valves; Cv values of 1.0 to 400 are Flowrite globe valves.
Control Valve Sizing and Selection