Control Valve Cv Si Units

Of water at 60 °f with a pressure drop of 1 psi.

Control valve cv si units. There are now standardized calculations that are becoming accepted worldwide. Gallons per minute that passes through a valve at a pressure drop of 1 psi. When sizing a control valve, the most common approach is to calculate the flow coefficient, cv which is a measure of the capacity of the valve body and trim.

Kvo is expressed in m³/h. 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. Each has space for four simultaneous calculations.

A valve cv can be described as the number of gallons per minute (gpm) at 60 o f (15.5 o c) that will pass through a valve with an associated pressure drop of 1 psi. Leakage rate the leakage rate of a valve is the ratio kvo / kvs. Flow for a given cv is typically calculated from the following formula.

Liquid pressure recovery factor for a control valve without attached fittings dimensionless f lp. It is often convenient to express the capacity and flow characteristic of a control valve in terms of the. The flow coefficient of a device is a relative measure of its efficiency at allowing fluid flow.

Le kvo of the valve: The valve flow coefficient, cv, is the number of u.s. Just to make things a bit interesting and more confusing the resistance of a valve can also be expressed in terms of k, the resistance coefficient.

Online calculator to quickly determine steam flow rate through a valve. Flow coefficient, cv, and flow factor, kv, are values used to specify the hydraulic capacity of a control valve. 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.