Control Valve Cv Chart. Chapter 3 covers valve and actuator types. 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.
A control valve may be defined as a valve with a powered actuator that responds to an external signal. Self control valve constant flow valve pressure setting: The valve flow coefficient, cv, is the number of u.s.
For a quick guide to valve designs, see table 3.
The pressure drop or flow rate through a valve or orifice plate is typically calculated using the a flow coefficient, cv or orifice diameter. If this new c v is smaller than small valve c v, use small valve size. They include control valve sizing calculations in accordance with the current isa/iec standards and noise calculations in accordance with the current iec standards. Valve cv’s are shown on valve data sheets.