Pump cavitation and suction stroke relations

Pump users generally require a pump suction (high vertical difference from the suction level to the center of the pump inlet), but there is no term for suction in domestic pump standards and specifications.

The term associated with it is the cavitation margin, which is approximately equal to 10 – suction (m, without considering suction resistance).

We believe that the relationship between the suction term and the related terms at home and abroad can be compared as follows:


NPSH format



Post time: Jun-06-2019

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