How to calculate cv flow

(1)FlowCoefficientCvvalue,Kvvalue - Samshin Valve

Flow coefficient(Kv) for valves expresses flow rate in liter per minute of 60℉ waterwith1.0kg/cm 2 pressuredropacrossvalve. Accordingtofollowing,CvvaluecangetfromKvvalue.

November 6th,2019

Flow Calculation for Gases - Ideal Valve

Flow Calculation for Gases The coefficient of flow (Cv) is a formula which is used to determine a valve’s flows under various conditions and to select the correct valve for a flow application. The Cv was designed for use with liquid flows, it expresses the flow in gallons per minute of 60º F water with a pressure drop across the valve of 1 ...

November 6th,2019

LIQUID FLOW C V EQUATION - Circle Seal

LIQUID FLOW CV EQUATION Cv = Q G ∆P This equation applied to all liquids including cryogenic liquids. LEGEND Cv - Flow coefficient Q - Flow in GPM ∆P - Differential Pressure (Difference between inlet and outlet pressure) in PSI. G - Specific Gravity (Taken from Properties of Liquids) EXAMPLE GIVEN: Flow - 20 GPM of Water Inlet pressure ...

November 6th,2019

Flow Coefficients and Computations

Dia-Flo® Diaphragm Valves 5 74 0 09/15 Cv rating Rate of flow depends upon the pressure drop. Cv is the amount of flow in gallons per minute through a valve which results in a 1 psi pressure drop.

November 6th,2019

(1)FlowCoefficientCvvalue,Kvvalue - Samshin Valve

Flow coefficient(Kv) for valves expresses flow rate in liter per minute of 60℉ waterwith1.0kg/cm 2 pressuredropacrossvalve. Accordingtofollowing,CvvaluecangetfromKvvalue.

November 6th,2019

ABOUT Cv (FLOW COEFFICIENTS) - FNW Valve

Cv for FLUIDS Cv for liquids is the volume of 68°F water in U.S. gallons per minute that passes through a valve at a pressure drop of 1 PSI. Flow for a given Cv is typically calculated from the following formula. Where: Q = Valve flow rate in gallons per minute (US GPM) ΔP = Difference between upstream and downstream pressure in

November 6th,2019

Valve Cv flow capacity formulae liguid gas calculations

Approximate flow capacity can be determined for valves by using the given Cv factor for a valve and applying them to the following formulae’s. If flow capacity required is known and valve selection is desired, to calculate Cv with the following formulaes and select appropriate valve from the manufacturers Cv factor chart This information is ...