NPSHR stands for Net Positive Suction Head Required (NPSHR). It is a function of the pump design at the operating point on the pump performance curve. The Net Positive Suction Head is basically the absolute total suction head in feet. Its formula is as follows:
Atmospheric Pressure (- ) Vapor Pressure (+) Liquid Height (-) Friction in the Suction Line.
For details see the link below;
www.pumpworld.com
Atmospheric Pressure (- ) Vapor Pressure (+) Liquid Height (-) Friction in the Suction Line.
For details see the link below;
www.pumpworld.com
