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Common Pumping Mistakes by Jim Elsey 10/06/2020 Open Impellers True open impellers are not commonly used in industrial pumps because the demands of service require sufficient vane support (webbing or shrouds) to buttress the required torque loads and to maintain the...
Open or Closed Tanks and the Effect on NPSHA Calculations When working through NPSHA calculations for pump applications we need to know if the suction supply tank is open to the atmosphere or not. If it is an open tank the calculation is easy; as we just convert the...
Common Pumping Mistakes by Jim Elsey 08/12/2020 Ever wonder why some impellers, all sparkly fresh and new from the factory, have holes in them, or why some impellers have those funny mini-vanes on the back side? The short answer is to reduce axial thrust,...
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