Multistage pumps are defined as pumps in which the fluid flows through several impellers fitted in series. ... The balancing of axial thrust can be enhanced by arranging the stages back to back in pairs or groups (see Back-to-back impeller pump).
Vertical multistage pumps are great for areas that don't have much footprint to spare. Its ability to deliver high pressure output with a single pump body and motor combo is also a plus.
It is important to keep in mind, however, that this type of pump does not tolerate debris or significant solids, and is also vulnerable to deadhead conditions.
Multistage pumps provide many key benefits, from energy savings, to ability to operate in a wide range of flow/head scenarios. If you think it might be right for your application, be sure to discuss with a qualified engineer first. They'll make sure the right pump is selected specifically for your purpose.
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