Product Catalogue

Econ-O-Trol Series 09 - 2" thru 14" for 125/150 lb. Flanging

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Cv Values for Econ-O-Trol series 09 Swing Thru Butterfly Valves

By definition, Cv is the flow coefficient of a control device or flow restriction. Cv is defined as the number of US gallons of 60°F water per minute which will flow through the given restriction with a one pound per square inch pressure drop.

Cv Values
(Flow in GPM of 60°F water at 1 psi pressure drop, specific gravity=1)



Angle of Disc Opening
Valve Size 10° 20° 30° 40° 50° 60° 70° 80° 90°
2" 2 5 11 20 34 49 64 83 90
2-1/2" 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 1272
6" 30 63 126 228 382 632 955 1370 1999
8" 53 111 225 406 680 1125 1698 2591 3853
10" 83 174 351 635 1063 1759 2655 4052 6361
12" 120 252 506 914 1531 2533 3826 5835 9164
14" 143 302 606 1096 1835 3035 4584 6992 10981
Angle of Disc Opening
Valve Size 10° 20° 30° 40° 50° 60° 70° 80° 90°
16" 191 400 805 1455 2436 4118 6388 9835 12266
18" 244 513 1032 1865 3123 5279 8185 12608 15725
20" 305 640 1287 2326 3896 6584 10209 15725 19612
22" 372 781 1570 2838 4753 8033 12456 19186 23929
24" 445 936 1882 3401 5696 9626 14926 22990 28674
26" 526 1105 2221 4015 6723 11364 17619 27139 33848
28" 613 1288 2589 4679 7836 13245 20536 31632 39451
30" 706 1485 2985 5395 9035 15270 23676 36468 45484
Angle of Disc Opening
Valve Size 10° 20° 30° 40° 50° 60° 70° 80° 90°
32" 800 1682 3382 6112 10235 17299 26823 41315 51528
34" 907 1906 3832 6926 11599 19603 30395 46817 58392
36" 1020 2144 4311 7791 13047 22052 34191 52664 65684
38" 1140 2396 4818 8707 14581 24644 38211 58855 73405
40" 1267 2662 5352 9674 16200 27380 42453 65390 81555
42" 1400 2942 5915 10691 17904 30260 46919 72268 90134
44" 1540 3236 6507 11760 19693 33284 51608 79491 99143
46" 1687 3544 7126 12879 21568 36453 56520 87057 108580
48" 1840 3866 7774 14049 23527 39765 61656 94968 118446
                   
Angle of Disc Opening
Valve Size 10° 20° 30° 40° 50° 60° 70° 80° 90°
54" 2340 4916 9885 17865 29910 50566 78403 120762 150617
60" 2899 6093 12250 22139 37065 62663 97159 149653 186650

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