Valve Flow Coefficient for Liquid
Valve Flow Coefficient for Liquid Formulas |
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\(\large{ C_v = Q \sqrt {\frac {\Delta p} {SG} } }\) (US units) \(\large{ K_v = Q \sqrt {\frac {\Delta p} {SG} } }\) (SI units) |
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Symbol | English | Metric |
\(\large{ C_v }\) = valve flow coefficient (US units) | \(\large{ dimensionless }\) | |
\(\large{ K_v }\) = valve flow coefficient (SI units) | \(\large{ dimensionless }\) | |
\(\large{ SG }\) = specific gravity of liquid (water at 60°F = 1.0000) | \(\large{ dimensionless }\) | |
\(\large{ Q }\) = valve flow rate | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) |
\(\large{ \Delta p }\) = valve pressure differential | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
Tags: Coefficient Equations Flow Equations Valve Equations Liquid Equations Valve Sizing Equations