Water and Wastewater Terms Beginning D

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discharge head

The pressure, in pounds per square inch or kilopascals, measured at the centerline of a pump discharge and very close to the discharge flange, converted into feet or meters. The pressure is measured from the centerline of the pump to the hydraulic grade line of the water in the discharge pipe.

discharge head[ft] = discharge pressure [psi](2.31 ft/psi)

or

discharge head[m] = discharge pressure[kPa](1 m/9.8 kPa)