Cv Value For Air Valves

What is butterfly check valve ? Kv = 0.865 · cv cv = 1,156 · kv (equivalence between flow coefficients kv and cv) And brings the value much closer to that of water or air, 1.0.

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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.

Cv value for air valves. Just follow the link on the table below. 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 required cv range for this application than is.0141 to.0703.

On valves or orifices with other cv factors, the flow capacity will be directly proportional to the cv rating. It is defined as the flow rate in us gallons per minute [gpm] of water at a temperature of 60º fahrenheit with a pressure drop across the valve of 1 psi. Flow coefficients cv values the flow coefficiency (cv) of a valve is the rate of gallons per minute of water at 60° f through a fully opened valve at a pressure drop of 1 psi across the valve.

Founded at 1980, value valves co., ltd. The valve flow coefficient, cv, is the number of u.s. How do we get value 1.156 (conversion factor) in formula cv = 1.156kv or cv= 1.156×q×sqrt (g/delta p).

Equations displayed for easy reference. Valves are tested by running water through it before publishing the cv value. Online calculator to quickly determine valve and orifice cv & kvs values for air.

Full port valves will have a higher cv than reduced port valves. The use of this flow coefficient (c v) calculator leads to a standard calculation to compare valve capacities. Has been contributed to offer high quality product to the global market.

This calculator can be used to help select a valve with enough flow capacity for a given application. Scfm air flow through a valve orifice having a cv factor of 1.00 Cv = (48000 / (248 × 33.03)) x sqrt (0.86 x (273 240)).