PUMP DISCHARGE HEAD

The discharge head for a sewage ejector installation consists of the following elements:

STATIC HEAD The difference in elevation between the lowest water level in the sewage basin or pit, and the maximum height of the discharge line.

FRICTION Loss of head in the discharge line, including valves and other fittings.

BACK PRESSURE Proper allowance must be made for back pressure in sewer line, if existing.

EXAMPLE

PROPOSED INSTALLATION: Sewage basin 5'-0" in depth to be set in ground, with top flush with furnished floor. Basement floor 10'-0" below highest point of discharge line. Ejector capacity 100 G.P.M. size of discharge line 4"

    Static Head .............................................................14 ft.*

Friction Head: discharge line ....................................... 2 ft.

valves and other fittings ............................................. 3 ft.

Back Pressure: .......................................................... 6 ft.

Total Dynamic Head ................................................. 25 ft.

* Lowest water level estimated to be approximatly 1 ft. above bottom of sewage basin.