A single - stage pump is a pump with only one impeller, with a maximum lift of only 125 meters.

Multi-stage pump refers to two or more than two of the pump impeller, the maximum can lift more than 125 meters; in multistage pump single stage pump head must be equipped with two step motor case can be increased by the number of impeller with four motor, which can improve the pump life and reduce machine noise, but multi single-stage pump pump maintenance is relatively difficult to point.

In the actual needs of the pump head is less than 125 meters, the area under the pumping station, pump (pump prices generally higher than the single-stage pump high price), and other factors to consider in the selection of single stage or multi-stage pump pump.

With the progress of technology, the pump of the single stage impeller can improve the pump's lift by raising the speed of the pump. It can replace the multistage pump, but it is only a little more expensive.

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