NPSH online calculator

Calculation of NPSH
Enter the value and click "Calculate" to display the result

NPSHa = effective NPSH

Pa = atmospheric pressure

Pv = steam pressure

Pn = gauge pressure of the pump

ρ = density

This calculator is used to calculate the effective cavitation allowance (NPSHa) for each pump system.

Usage example

Input data:

Atmospheric pressure (Pa): 10

Steam pressure (Pv): 15

Pump table pressure (Pn): 10

Density: 16Kg / m3

Click on calculation to output data

Effective NPSH: 0.312500