Sunday, December 25, 2016

Net Positive Suction Head

Net Positive Suction Head (NPSH): In simple words "The differnce between pumping liquid actual pressure in the pipline to the liquid's vapour pressure at given tempature".



NPSH is an important parameter to take into account when designing a pumping system: whenever the liquid pressure drops below the vapour pressure, liquid boiling occurs, and the final effect will be cavitations: vapour bubbles may reduce or stop the liquid flow, as well as damage the system.



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