What is the detailed relationship between the pressure drop and flow rate of a control valve? Please provide detailed information!
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What is the detailed relationship between the pressure drop and flow rate of a control valve? Please provide detailed information!
There is no fixed relationship between pressure drop and flow rate; you need to understand it through the formula for the Cv value! Specifically, there should be a instrumentation manual available!
By asking this, you are essentially asking about the relationship between the pressure loss of a throttling element and the flow rate; however, these two quantities are not related to each other.
Δp=100r(v/Cv)*(v/Cv), where v is the flow rate and Cv is the discharge coefficient