Valve Cv Calculator Steam. The valve flow coefficient according to the jis standard, represents the flow capacity in us gallons/minute of 60° f pure water when it is flowing through the valve with a pressure difference of 1 psi at the specified travel (operation range). Pressure drops from 3.01 to 6 psi, multiply valve cv by 0.8;
They express coefficient cv/kv as the flow rate of water in g.p.m. Flow coefficient of superheated steam calculator. In this saturated wet steam flow coefficient (cv) calculator, calculate the flow coefficient based on the mass of water and steam, saturated flow coefficient.
The equations used are here.
With maximum flow rate calculated, you can compare control valves from different manufacturers for their efficiency for the same nominal size. C v = c v_ saturated (0.95) 1/2 = 0.97 c v_saturated. Select the unit of inlet pressure. Select the correct sheet according to the medium.
