NPSH Calculator

Enter value and click on calculate. Result will be displayed.

NPSHa = (Pa-Pv+Pn) / P
NPSHa = NPSH Available
Pa = Atmospheric Pressure
Pv = Vapor Pressure
Pn = Gage Pressure at the Pump Suction
p =Density

Enter your values:

Atmospheric Pressure (Pa):
Vapor Pressure (Pv):
Gage Pressure at the Pump Suction (Pn):
Kg / m3


NPSH Available:
NPSH Calculation The NPSH calculation, basically, is about the suction mechanism alone and has little to do with the pump. The machine operator, and/or their technician or contractor can conclude this calculation.

The Available NPSH (NPSHA): a proportion of how close the liquid at a given point is to blazing, thus to cavitation. Actually it is the supreme weight head less the fume weight of the fluid.

The Required NPSH (NPSHR): the head an incentive at the suction side (for example the bay of a siphon) required to shield the liquid from cavitation (gave by the producer).

Search calculator