Cv Calculation For Gas Control Valve

[m3/h] for a pressure drop of 1 psi [1 bar] across a flow passage [flow coefficient:

Cv calculation for gas control valve. Control valve cv excel calculation tool liquid gas steam control valve sizing for steam systems gas flow in control valves valin hvac valve sizing in the real world industrial controls Green boxes are output data calculated by template The formula will differ depending on the product the valve regulates, such as liquid, gas, or steam.

The valve flow coefficient cv or its metric equivalent kv has been adopted universally as a comparative value for measuring the capacity of control valves. The flow coefficient for a control valve which in full open position passes 25 gallons per minute of water with a one pound per square inch pressure drop can be calculated as: In effect this means that the fluid data for the fluid zone associated with the control valve must be defined for the approximate pressure condition at the outlet.

The use of this flow coefficient (c v) calculator leads to a standard calculation to compare valve capacities. This calculator can be used to help select a valve with enough flow capacity for a given application. F p is a correction factor that accounts for pressure losses due to piping fittings such as reducers, elbows, or tees that might be attached directly to the inlet and outlet connections of the control valve to be sized.

When gas, instead of liquid flows through this valve does the cv remains same. For measuring the valve capacity of control valves, the coefficient cv or its metric equivalent kv is adopted. The cv is defined as the flow rate of water in us gallons per minute that can pass through a valve with a pressure drop of 1 psi at a temperature of 60f.

Control valve cv refers to the flow coefficient of the valve. The valve flow coefficient (c v) is a convenient way to represent flow capacity of a valve across a range of fluids and process parameters.the c v calculator will calculate either c v or flow using the supplied additional parameters of fluid, inlet and outlet. Online calculator to quickly determine steam flow rate through a valve.

For a specific control valve, flow coefficient cv/kv is determined experimentally by control valve manufacturers, and you can found it in manufacturers technical specifications. [m3/h] for a pressure drop of 1 psi [1 bar] across a flow passage [flow. It allows you to calculate the flow or c v (flow coefficient) to make the relationship visible between the pressure drop (the difference in pressure between two points in a network transporting a liquid or gas) and the flow rate.