HI 9.6.1 – Rotodynamic Pumps Guideline for NPSH Margin
What You Will Learn/Overall Benefits: Determine best operating region at a +/- efficiency point for optimum pump life, higher efficiency and reliability.
Applicable Markets: Standard addresses entire pump community in all markets.
Content: Preferred operating region (POR) and allowable operating region (AOR), factors affecting AOR, NPSH margin versus rate of flow, guideline when stable or unstable operation may be expected based on typical system head curves, pumps exhibiting a drooping head curve or a head curve with a dip, suction specific speed, intermittent operation outside the AOR.
