Cv is the flow coefficient of liquid, which means that 60oF per gallon (GPM) is 1 pound (lb / in2) of pressure precipitation flow.

Expressed in weight flow kg / hour:

Formula: \(Cv = 5.32 w / (500 (dp SG)^{1/2})\) (4)

among them:

w = water flow (kg/h)

SG = Specific gravity

dp = pressure drop (kPa)

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