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Full Description

ANSI/HI 20.3 presents a simplified method to predict normally attainable efficiency levels at the best efficiency point for selected types of rotodynamic pumps when the rate of flow, total head per stage, net positive suction head available (NPSHA), and the service conditions are known. The standard provides guidelines on the following pump types:
  • Slurry, end suction
  • Solids-handling, end suction pumps
  • Submersible sewage, end suction
  • Stock, end suction
  • Horizontal multistage, axial split, segmented ring diffuser barrel
  • ASME B73, API end suction, end suction - small
  • End suction - large (greater than 0.3 m3/s (5000 gpm)
  • API double suction
  • Double suction, general service
  • Vertical turbine, mixed-flow and propeller, single and multistage diffuser type
 

Document History

  1. HI 20.3-2020


    Rotodynamic Pump Efficiency Prediction

    • Most Recent
  2. HI 20.3-2015

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    Rotodynamic Pump Efficiency Prediction

    • Historical Version
  3. HI 20.3-2010


    Rotodynamic (Centrifugal and Vertical) Pump Efficiency Prediction

    • Historical Version