Cv Value For Valves. Kv = 0.864 cv at a particular percentage of opening of valve giving cv = 1 will pass 1us gpm ( at 60 °f) and a pressure differential of 1 psi upstream and downstream across the valve. When you need to do valve sizing for your application, you need the cv to select the right valve.
The difference of cv relates to the type of the valve and its opening position. Q is the rate of flow (expressed in us gallons per minute), sg is the specific gravity of the fluid (for water = 1), δ p is the pressure drop across the valve. C v calculator for valve sizing.
When you need to do valve sizing for your application, you need the cv to select the right valve.
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. 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. Online calculator to quickly determine valve and orifice cv & kvs values for air. Such as the renault number (reynolds number), flow rate (flow), the shock (choking), the involved joints in pipes (fitting) and the other by the values of these.