GE QS1800V, QS2800V manual 3.4.2Discharge Piping

3.4.2Discharge Piping

•Select piping to handle the maximum flow and pressure developed by the pump.

•Sizing to induce 10 psi (0.70 bar) pressure drop or less per 100 feet (30.5 m) is recommended.

3.4.3Piping Connections

The standard QSV Series pump inlet and discharge connections are grooved for Victaulic clamped-union couplings with gasket. The standard inlet and discharge connection is 1-1/4-inch Victaulic. Victaulic couplings are available worldwide. Contact the factory or your local industrial piping wholesaler.

3.4.4Inlet Line Screen/Filter

This is a precision multi-stage pump with close tolerances to provide maxi- mum efficiency. It is good practice to install a large area 30-mesh or finer screen, or a cartridge filter in the pump inlet line to collect any foreign objects or large particles. Size the screen or filter so as to induce a minimal pressure drop.

WARNING: THE PUMP MUST NOT BE OPERATED WITH RESTRICTED SUC- TION LINE (INLET) FLOW.

Positive gauge pressure must be maintained at the pump inlet (down stream from the screen or filter). A clogged screen or filter will result in a greater pres- sure drop than a clean screen or filter. To prevent possible pump damage from low inlet pressure, a low-pressure alarm or shut-off switch should be located between the screen or filter and the pump. A low-flow shut-off switch should also be located in the same area.

7