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29 Mar 2020

The Differences Between Centrifugal Pumps and Compressors

Centrifugal pumps and compressors are both rotating equipment devices. Each is a machine that  imparts kinetic energy to the fluid to create

21 May 2012

Impellers – why underfile?

Underfiling is the removal of material from the underside (also back side, “non-working” side, or suction side) of an impeller vane at the inlet or

24 Jan 2012

Diffuser versus volute

The stator section of a centrifugal pump, after flow exits the impeller, is usually either a ‘diffuser’ or a ‘volute’. The purpose of each of these

27 Apr 2011

Multi-stage pump in-line (tandem) versus opposed impeller arrangements

Common to early twentieth century multi-stage rotodynamic (centrifugal) pumps were design features for minimizing axial thrust.  At that time the

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