CENTRIFUGAL PUMPSDOE-HDBK-1018/1-93PumpsFigure 1 Centrifugal PumpCentrifugal pumps can also be constructed in a manner that results in two distinct volutes, eachreceiving the liquid that is discharged from a 180oregion of the impeller at any given time.Pumps of this type are called double volute pumps (they may also be referred to a split volutepumps). In some applications the double volute minimizes radial forces imparted to the shaft andbearings due to imbalances in the pressure around the impeller. A comparison of single anddouble volute centrifugal pumps is shown on Figure 2.Figure 2 Single and Double VolutesME-03Rev. 0Page 2
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