Cv Calculation For Butterfly Valve

The control valve handbook has been a primary reference since its first printing in 1965.

Cv calculation for butterfly valve. 55 ÷ 18.8 = 2.93. This might result in over sizing or under sizing of the valve which will cause performance, safety and cost issues. Cv sizing (liquid) for liquid flows, in the cv sizing area the valve max capacity c v [gpm] is computed and the following output of the valve sizing procedure is shown for each process case (figure 1.14):

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. Control valve cv calculation in deciding the size of the control valve that (port size) we need to calculate the cv value of the process (calculated cv) by calculating cv has educated more than 50 years, which is involved in. The general equation for c v is as follows:

Chapter 1 offers an introduction to control valves,. To find necessary cv for a 55 scfm flow: Suppose a certain valve has a published cv factor of 3.75.

Imperial measure flow in us gallons per minute of water at 60° fahrenheit with pressure drop of 1 psi across the valve. A 4 inch high performance butterfly valve operating at around 70% open would also have a cv of about 250. Be careful, it should be expressed in inches.

It applies to the factor of the head drop (δh) or pressure drop (δp) over a valve with the flow rate q. Butterfly valves even though we work on a metric system, measures of flow are commonly given as a cv value which is an; C v calculator for valve sizing.

Online calculator to quickly determine water flow rate through a valve. Butterfly valves are less expensive. In the results area the output of the valve sizing is summarized into three sections (figure 1.13):