Head Friction Loss in Fittings and Valves

on 28 November 2018. Posted in Fluid Dynamics

hydraulic head loss fitting valve Head loss, abbreviated as \(h_f\), is the pressure drop caused by fittings and valves.

Head Friction Loss in Fittings and Valves formula
\(\large{ h_f = K \; \frac{v^2}{2 \; g} }\)
Symbol	English	Metric
\(\large{ h_f }\) = head loss frictional resistance	\(\large{ dimensionless }\)
\(\large{ g }\) = gravitational constant	\(\large{\frac{lbf-ft^2}{lbm^2}}\)	\(\large{\frac{N - m^2}{kg^2}}\)
\(\large{ K }\) = loss coefficient for fittings and valves	\(\large{ dimensionless }\)
\(\large{ v }\) = velocity of flow	\(\large{\frac{ft}{sec}}\)	\(\large{\frac{m}{s}}\)

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Head Friction Loss in Fittings and Valves formula