Centrifugal Pump Modifications

The centrifugal pump can be modified to meet the needs of several different applications. If it is necessary to produce higher discharge heads, the pump may be modified to include several additional impellers. If the material being pumped contains a large amount of material that could clog the pump, the pump construction may be modified to remove a major portion of the impeller from direct contact with the material being pumped. Although numerous modifications of the centrifugal pump are available, the scope of this text covers only those that have found wide application in the water distribution and wastewater collection and treatment fields. Modifications presented in this section include:

• Submersible pumps

• Recessed impeller or vortex pumps

• Turbine pumps

Figure 10.14 Submersible pump.
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