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NPSH Calculator
Inputs
Liquid Surface Above Pump (m)
Reservoir Surface Absolute Pressure (Pa absolute)
Vapor Pressure (Pa)
Liquid Density (kg/m³)
Required NPSH (manufacturer curve) (m)
Total Suction Losses (pipe, fittings and entry) (m)
Calculate
Results
Enter inputs and click calculate to see the result.
Calculation Steps
References
KSB Centrifugal Pump Lexicon: NPSH and cavitation criteria
Source accessed 2026-09-08
NPSH Calculator | Engivault