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Glossary · Suction conditions
Duty NPSH Required
Minimum head difference between pump suction nozzle pressure and the liquid vapor pressure needed by a certain pump model to avoid cavitation.
It is a unique pump characteristic specified by pump manufacturers and is greatly influenced by pump design and flow rate.
In pump selection, Duty NPSH Available should always be higher than Duty NPSH Required.
FluidFlow performs this comparison and generates warning messages accordingly.
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