Center Line® Resilient Seated Butterfly Valves

 

Valve Flow Coefficients


Center Line Resilient Seated Butterfly Valves
Series 200
Series 225-250

Series 200

Cv Values - Valve Sizing Coefficients (US-GPM @ 1ΔP) 2" to 48"
Size 10° 20° 30° 40° 50° 60° 70° 80° 90°
2" 0.06 3 7 15 27 44 70 105 115
2 ½" 0.1 6 12 25 45 75 119 178 196
3" 0.2 9 18 39 70 116 183 275 302
4" 0.3 17 36 78 139 230 364 546 600
5" 0.5 29 61 133 237 392 620 930 1022
6" 0.8 45 95 205 366 605 958 1437 1579
8" 2 89 188 408 727 1202 1903 2854 3136
10" 3 151 320 694 1237 2047 3240 4859 5340
12" 4 234 495 1072 1911 3162 5005 7507 8250
14" 6 338 715 1549 2761 4568 7230 10844 11917
16" 8 464 983 2130 3797 6282 9942 14913 16388
18" 11 615 1302 2822 5028 8320 13168 19752 21705
20" 14 791 1647 3628 6465 10698 16931 25396 27908
24" 22 1222 2587 5605 9989 16528 26157 39236 43116
28" 36 1813 3639 6636 10000 14949 22769 34898 49500
30" 37 2080 4406 9546 17010 28147 44545 66818 73426
32" 45 2387 4791 8736 13788 20613 31395 48117 38250
36" 260 3050 6730 12740 20220 32500 52500 79600 87500
40" 84 4183 8395 15307 24159 36166 55084 84425 119750
42" 350 4095 9040 17108 27150 43640 70500 106890 117500
48" 455 5365 11840 22400 30600 51200 92300 140000 154000


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Series 225-250

Cv Values - Valve Sizing Coefficeints (US-GPM @ 1ΔP)
Size 10° 20° 30° 40° 50° 60° 70° 80° 90°
2" 0.06 3 7 15 27 44 70 105 115
2 ½" 0.1 6 12 25 45 75 119 178 196
3" 0.2 9 18 39 70 116 183 275 302
4" 0.3 17 36 78 139 230 364 546 600
5" 0.5 29 61 133 237 392 620 930 1022
6" 0.8 34 94 153 257 422 706 1154 1320
8" 2 56 154 251 422 693 1158 1892 2165
10" 3 87 238 385 654 1073 1794 2931 3353
12" 4 153 417 681 1145 1879 3142 5132 5827
14" 6 183 500 816 1372 2252 3765 6150 7037
16" 8 271 740 1208 2031 3333 5573 9104 10,416
18" 11 318 867 1417 2382 3909 6535 10,676 12,215
20" 14 415 1133 1851 3112 5107 8538 13,948 15,959
24" 22 543 1482 2421 4069 6678 11,165 18,240 20,869


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