... for water, oil 3. delivery within 7 working days RP9E type centrifugal pump can divide into single stage, single suction ... construction. Characteristics of Centrifugal PumpThe basic structure of the centrifugal pump has six parts, respectively: impeller, pump body, pump shaft, bearing, sealing ... On the other hand, a too small gap between impeller and pump shell causes friction. In order to increase ...