What is a multistage pump?
A pump that contains different stages within the piping system where force is applied to the water. Each stage consists of one impeller as well as its accompanying diffusion components. The term “multistage” is usually used in reference to centrifugal pumps.
In many cases, these pumps are referred to in terms of how many stages they contain. For example, a pump with four stages might be referred to as a four-stage pump, or one with 10 stages would be referred to as a ten-stage pump.
How do multi-stage pumps work?
The idea behind multistage pumps is fairly simple. In many industrial and fluid treatment facilities, it’s necessary for fluids to be moved large distances with higher pressure. In many of these situations, the only way to achieve this higher pressure is with more than one impeller. The multiple impellers are mounted on the same shaft, and the flow progresses from one stage to another, building pressure as it goes.
Price® Pump Company offers a line of multi-stage centrifugal pumps that are manufactured with pressed stainless steel. The company’s MSW product is available in both horizontal and vertical configurations and is ideal for a range of applications, including cooling systems, industrial circulation, irrigation, chemical spray, and chemical transfer. Price’s horizontal MSWH multi-stage pump is closed coupled and can operate with max flow to 375 gpm and head to 260 ft. The company’s vertically configured multi-stage pump is model MSWV. The pump can accommodate flows to 70 gpm, system head to 300 ft, and temperatures to 140 degrees F.
Ruhrpumpen manufactures a vast range of pumps that utilize multi-stage technology, including: the LVZ floating dock pump, JTN horizontal process pump, SM and SMI axial flow split case pump, HSM horizontal split case pump and more.
The company’s LVZ multi-stage pump is used on floating docks for fire protection applications. The pump is considered a radially split centrifugal pump with flow ranges from 800 to 1,320 gpm and total head from 82 to 525 ft.
Another example of Ruhrpumpen’s multi-stage product line includes its JTN heavy duty horizontal pump. The pump is axialy split, and complies with the API 610 standards required in oil fields, refineries, and petrochemical plants. The JTN allows for flow capacity to 2,100 gpm and head to 3,900 ft.
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