What is NPSH? | Pumps & Systems
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WEBDec 17, 2011 · NPSH is the difference between suction pressure (stagnation) and vapor pressure. In equation form: NPSH = Ps ‑ Pvap. Where: NPSH = NPSH available from the system, at the pump inlet, with the pump running. P s = Stagnation suction pressure, at the pump inlet, with the pump running. P vap = Vapor pressure of the pumpage at inlet …
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