Calculation of the flow coefficient of control valves
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I’ve heard some technicians mention that there seem to be different opinions regarding whether CV is worth calculating, with each approach having its own algorithm. . . I’m a salesperson and would like to ask if there is a standard formula. Is there any material on learning* it?:) I’m begging
Manufacturers in each field have calculation software.
The CV value is merely the coefficient of maximum flow for that path; what you might be asking about is the valve opening degree under different pressures, media, temperatures, and so on
That’s right; it is necessary to know the minimum and maximum pressures, as well as the medium density and other parameters, in order to calculate the coefficient of flow for the control valve. By using this coefficient, the opening degree can be determined, thereby meeting the customer’s requirements
For reference: GB/T 17213.2-2005 Industrial process control valves – Part 2-1: Formulas for calculating fluid flow rate under conditions of capacity and installation (latest version: GB/T 17213.2-2017)
It has been found. Thank you very much; wish you a happy life