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Valve Size | Disk Angle, Degrees | ||||||||
10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | |
2" | 2 | 5 | 11 | 20 | 34 | 49 | 64 | 83 | 90 |
2.5" | 4 | 8 | 20 | 34 | 56 | 84 | 126 | 178 | 194 |
3" | 6 | 14 | 30 | 51 | 85 | 132 | 202 | 279 | 370 |
4" | 13 | 28 | 54 | 98 | 159 | 257 | 391 | 550 | 747 |
5" | 21 | 43 | 88 | 158 | 265 | 429 | 636 | 913 | 1,272 |
6" | 30 | 63 | 126 | 228 | 382 | 632 | 955 | 1,370 | 1,999 |
8" | 53 | 111 | 225 | 406 | 680 | 1,125 | 1,698 | 2,591 | 3,853 |
10" | 83 | 174 | 351 | 635 | 1,063 | 1,759 | 2,655 | 4,052 | 6,361 |
12" | 120 | 252 | 506 | 914 | 1,531 | 2,533 | 3,826 | 5,835 | 9,164 |
14" | 143 | 302 | 606 | 1,096 | 1,835 | 3,035 | 4,584 | 6,992 | 10,981 |
16" | 191 | 400 | 805 | 1,455 | 2,436 | 4,118 | 6,388 | 9,835 | 12,266 |
18" | 244 | 513 | 1,032 | 1,865 | 3,123 | 5,279 | 8,185 | 12,608 | 15,725 |
20" | 305 | 640 | 1,287 | 2,326 | 3,896 | 6,584 | 10,209 | 15,725 | 19,612 |
22" | 372 | 781 | 1,570 | 2,838 | 4,753 | 8,033 | 12,456 | 19,186 | 23,929 |
24" | 445 | 936 | 1,882 | 3,401 | 5,696 | 9,626 | 14,926 | 22,990 | 28,674 |
26" | 526 | 1,105 | 2,221 | 4,015 | 6,723 | 11,364 | 17,619 | 27,139 | 33,848 |
28" | 613 | 1,288 | 2,589 | 4,679 | 7,836 | 13,245 | 20,536 | 31,632 | 39,451 |
30" | 706 | 1,485 | 2,985 | 5,395 | 9,035 | 15,270 | 23,676 | 36,468 | 45,484 |
32" | 800 | 1,682 | 3,382 | 6,112 | 10,235 | 17,299 | 26,823 | 41,315 | 51,528 |
34" | 907 | 1,906 | 3,832 | 6,926 | 11,599 | 19,603 | 30,395 | 46,817 | 58,392 |
36" | 1,020 | 2,144 | 4,311 | 7,791 | 13,047 | 22,052 | 34,191 | 52,664 | 65,684 |
38" | 1,140 | 2,396 | 4,818 | 8,707 | 14,581 | 24,644 | 38,211 | 58,855 | 73,405 |
40" | 1,267 | 2,662 | 5,352 | 9,674 | 16,200 | 27,380 | 42,453 | 65,390 | 81,555 |
42" | 1,400 | 2,942 | 5,915 | 10,691 | 17,904 | 30,260 | 46,919 | 72,268 | 90,134 |
44" | 1,540 | 3,236 | 6,507 | 11,760 | 19,693 | 33,284 | 51,608 | 79,491 | 99,143 |
46" | 1,687 | 3,544 | 7,126 | 12,879 | 21,568 | 36,453 | 56,520 | 87,057 | 108,580 |
48" | 1,840 | 3,866 | 7,774 | 14,049 | 23,527 | 39,765 | 61,656 | 94,968 | 118,446 |
54" | 2,340 | 4,916 | 9,885 | 17,865 | 29,910 | 50,566 | 78,403 | 120,762 | 150,617 |
60" | 2,899 | 6,093 | 12,250 | 22,139 | 37,065 | 62,663 | 97,159 | 149,653 | 186,650 |
SIZE | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
MIN Cv | 0.5 | 0.6 | 1.0 | 1.7 | 2.5 | 4.0 | 6.6 | 10.8 | 14.9 | 18.5 | 29 | 37 | 46 | 56 | 67 |
MAX Cv | 1.6 | 2.1 | 2.7 | 4.0 | 5.4 | 7.5 | 11.3 | 16.6 | 22.0 | 26.0 | 48 | 58 | 70 | 82 | 96 |
SIZE | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 54 | 60 |
MIN Cv | 52 | 61 | 70 | 80 | 91 | 102 | 114 | 126 | 140 | 154 | 168 | 184 | 234 | 334 |
MAX Cv | 94 | 106 | 119 | 131 | 145 | 160 | 175 | 191 | 208 | 225 | 243 | 262 | 290 | 414 |