NPSH Suction Surface Pressure

  • Thread starter WesTech
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Head psa(suction surface pressure) = 2.31xP/specific gravity

This is one of the factors to calc NPSH. Shows how much head is pushing liquid through the pump.

What does the specific gravity have to do with surface pressure of a liquid before it goes into the pump? Isn't it just involving the atmospheric pressure pushing on the liquid?
 

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Nidum
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