Cv is the flow coefficient of the liquid, which represents a pressure drop of 1 lb/in2 per gallon (GPM) of 60oF.
Expressed in volume flow
Calculation formula: \(C_v = q (SG / dp)^{1/2}\) (1)
among them:
q = water flow (US gallons per minute)
SG = specific gravity
Dp = pressure drop (psi)