Opening Flow Coefficient, Pinch Valve Cv value & operating point, Pinch valve selection chart

PINCH VALVE- CV CALCULATIONS

Pinch Valve Opening Flow Coefficient Cv% (US units)

1. Calculate your Pinch valve Cv value from the equation
2. Select desired operating point for the Pinch valve (% open)
3. Run down the column until your Cv is found
4. Go across to the left hand margin to read off approximate Pinch valve size

Notes: This chart is for Pinch valve in water service. Larger values will be required for Pinch valve for other applications - oil, slurry, sand, effluent, chemicals, etc

Operating point (% open)
Size	10	20	30	40	50	60	70	80	90	100
25	12	24	34	42	48	53	56	56	57	57
40	31	82	87	107	124	136	142	144	145	147
50	49	96	138	167	193	213	222	226	227	229
65	82	163	230	283	327	359	375	381	384	387
80	124	247	348	429	495	544	569	578	582	586
100	194	385	544	670	774	851	889	903	909	916
125	304	602	850	1047	1209	1329	1388	1410	1421	1431
150	437	867	1224	1507	1741	1914	1999	2031	2046	2081
200	777	1541	2177	2679	3095	3403	3554	3611	3637	3664
250	1214	2407	3401	4187	4835	5317	5553	5641	5683	5725
300	1749	3467	4698	6029	6963	7656	7997	8124	8184	82

Jec Valves

Jec Pumps

Pinch Valve Opening Flow Coefficient Cv% (US units)