Ball Valves Flow Rate
The below CV values are used to give an indication of flow rates for ball valves . CV value is an imperial measure of flow in US gallons per minute of water at 60° fahrenheit with a pressure drop of 1 psi across the valve. This is used as a guide and is not a linear progression. V Port Ball Valves Flow Rate (CV) Valve Size Ball Angle 15% 20% 30% 40% 50% 60% 70% 80% 90% 100% 1/2" 30°* 0.1 0.1 0.2 0.3 0.5 0.8 1.1 1.6 2.2 2.6 60° 0.1 0.1 0.3 0.5 0.9 1.4 2 3.3 4.4 6 3/4" 30°* 0.1 0.2 0.5 0.7 1.1 1.8 2.4 3.3 4.5 5.4 60° 0.1 0.2 0.7 1 1.7 2.8 4 6.5 9 12 1" 30°* 0.1 0.3 0.8 1.3 2.3 3.5 5.1 9.8 8.5 10 60° 0.2 0.4 1.1 1.8 3.4 5.3 7.9 12.3 15.3 21 1 1/4" 30°* 0.2 0.4 1.1 2 3.7 5.5 8 10 13 15 60° 0.2 0.6 1.8 3 5.5 9.5 12.8 19 26 39 1 1/2" 30°* 0.3 0.6 1.6 3 5 7.5 11 14 17 20 60° 0.4 0.8 2.5 4 8 13 19 27 40 52 2" 30°* 0.4 1.2 3.8 6 10 15 23 31 43 60 60° 0.4 1.5 4.6 9 16.5 27 39 55 83 110 2 1/2" 30°* 0.4 1 4 8 12 18 28 37 62 75 60° 0.4 1.5 5 10 21 34 53 75 103...