Cv Value For Control Valve. [m3/h] for a pressure drop of 1 psi [1 bar] across a flow passage [flow coefficient: In simple terms, a fully open control valve with a cv of 14 usgpm/psi passes 14 usgpm of fluid with 1 psi pressure drop.
The density of water at. It is a unit of measure for comparing valve flows. We focus on the manufacturing, sales and support of control valves, instrumentation, automation and performance services throughout the world.
When selecting a control valve for an application, the calculated c v is used to determine the valve size and the trim size that will allow the valve to pass the desired flow rate and provide stable control of the process fluid.
This is our valve c v calculator. For on/off control, it is common practice to select a valve with connections that are the same size as the piping. The use of this flow coefficient (c v) calculator leads to a standard calculation to compare valve capacities. Cv = (25 gpm) (1 / (1 psi))1/2.