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Multistage Pumps

Multistage Pumps

Multistage Pumps

Multistage water pumps are exactly what it sounds like they are: pumps with multiple stages. But what does that mean? Is there a benefit? With a single-stage pump, there is one impeller. With multi-stage models, on the other hand, there are several impellers and multiple stages. With each stage, higher pressures are achieved while the flow rate remains constant for a given RPM. As a result, the more stages there are the higher the final discharge pressure.

Two of the main benefits of multistage water pumps are that they save energy and operate in a wide range of flow/head situations. Applications for multistage water pumps include boosting water supplies, dewatering, boiler feed, firefighting, high-pressure cleaning, reverse osmosis, sprinkler systems, irrigation and more.

Multistage units are available with either vertical or horizontal shafts. Vertical design multistage water pumps fit in tight spots better while horizontal designs handle higher flow rates. In addition to different designs, the specs on multistage water pumps vary greatly. Voltages range from 110 Volts to 460 Volts and wattage can be up to 13,500 Watts or more. Flow rates can range from 780 GPH to over 45,000 GPH. Port sizes for multistage water pumps range from 1in. to 4in. and max. head pressures span from 22 feet to over 840 feet. Multistage water pumps are ruggedly built with materials such as cast iron housings, stainless steel impellers and aluminum oxide/graphite mechanical seals. Northern Tool + Equipment carries the best multistage water pumps available, including Gol and SAER-USA.