12
5. The piping should be arranged to permit pump isolation on both the suction and
discharge sides so that the pump can be drained during maintenance and repair.
6. Carefully clean all pipe parts, valves and fittings and pump branches prior to
assembly.
7. All pipe joints MUST be airtight.
Suction Piping
Warning: NPSH available must always exceed NPSH required by the pump. For suction
lifts over 10 feet and liquid temperatures over 120 degrees Fahrenheit, consult the
performance curve for your pump to determine NPSH required.
Properly installed suction piping is a necessity for trouble-free pump operation. Suction
piping should be flushed BEFORE connection to the pump.
1. Use of elbows close to the pump suction should be avoided. There should be a
minimum of two pipe diameters of straight pipe between the elbow and suction inlet.
Where used, elbows should be long radius.
2. Use suction pipe one or two sizes larger than the pump suction, with a reducer at the
suction. Suction piping should never be smaller diameter than the pump suction.
3. Reducers should be eccentric at the pump suction with sloping side down and
horizontal side at the top.
Summary of Contents for GSP Series
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