Uni-Chek® High Performance Check Valves

 

Valve Flow Coefficients


Valve Size Opening Pressure Differential
in (mm) CV in WC (mmWC) psi Bars
2 (50) 62 5.95 (151) 0.215 (0.015)
(65) 109 4.50 (114) 0.163 (0.011)
3 (80) 166 3.76 (95) 0.136 (0.009)
4 (100) 318 3.18 (81) 0.115 (0.008)
5 (125) 471 2.58 (65) 0.093 (0.006)
6 (150) 720 2.12 (54) 0.077 (0.005)
8 (200) 1384 2.34 (59) 0.085 (0.006)
10 (250) 2298 2.25 (57) 0.081 (0.006)
12 (300) 4153 2.00 (51) 0.072 (0.005)
14 (350) 4984 1.60 (41) 0.058 (0.004)
16 (400) 8307 1.00 (25) 0.036 (0.002)
18 (450) 11906 0.95 (24) 0.034 (0.002)
20 (500) 16059 0.90 (23) 0.032 (0.002)
24 (600) 22705 0.82 (21) 0.030 (0.002)
30 (750) 47071 0.65 (17) 0.023 (0.002)
36 (900) 53993 0.60 (15) 0.020 (0.001)

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