What Does NPSH Stand For?

NPSH stands for Net Positive Suction Head

Net Positive Suction Head (NPSH) is a critical parameter in hydraulic engineering that quantifies the pressure available at the suction side of a pump to prevent cavitation. NPSH is expressed as the difference between the absolute pressure at the pump inlet and the vapor pressure of the fluid being pumped, minus any friction losses. It is essential for ensuring efficient pump operation and longevity, as insufficient NPSH can lead to cavitation, resulting in potential damage to the pump and decreased performance.