Wheatley Gaso Green Book - NPSHA - Danco Pump & Supply

V. SUPPLY SYSTEM CONSIDERATIONS

H. NPSHA (Net Positive Suction Head Available)

NPSHA is the total inlet head from the system at the pump inlet connection minus the vapor pressure of the liquid at the pumping temperature. It is a function of the supply system and the liquid and pump characteristics (stroke, plunger size, liquid end design, operating speed). The pump characteristic is important to both supply system and NPSHR. A liquid supply system designed without consideration of the pump characteristics has not been properly designed.

*Note: "Danco Pump & Supply Co. is not a licensee or in any way affiliated with National Oilwell L.P. or it's parent Company National Oilwell, Inc. and that neither National Oilwell L.P. or it's parent company National Oilwell Inc. endorses any of the products or services offered by Danco. "National Oilwell", "Gaso", "Wheatley", and "Emsco" are trademarks belonging to National-Oilwell L.P."

"Danco Pump & Supply Co. is not a licensee or in any way affiliated with Gardner-Denver® and Gardner-Denver® does not endorse any of the products or services offered by Danco. "Gardner-Denver®" and all of its pumps and parts are registered to Gardner-Denver®."

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