Valve Flow Coefficient for Liquid
Valve Flow Coefficient for Liquid Formulas
| \(\large{ C_v = Q \sqrt {\frac {\Delta p} {SG} } }\) | (US units) |
| \(\large{ K_v = Q \sqrt {\frac {\Delta p} {SG} } }\) | (SI units) |
Where:
| Units | 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: Equations for Coefficient Equations for Flow Equations for Valves Equations for Liquid Equations for Valve Sizing