As a high lift centrifugal pump with multiple impeller structures, the pressure of multistage pump when delivering water can be adjusted to a large extent. In terms of working principle, it also relies on the rotating impeller to obtain the centrifugal pump to move the liquid. However, because there are two or more impellers inside, the centrifugal force is stronger and higher lift can be achieved. At present, the lift of multistage pump is more than 125 meters.

As for the characteristics of multistage pump, it is actually a centrifugal pump with higher lift parameters from the application occasions. There is no difference in other aspects. For example, the same special transportation of liquid without particles can also handle liquids with a certain degree of acid corrosion. Like most centrifugal pumps, it is mainly composed of four parts: stator, rotor, bearing and shaft seal. In order to help you have a basic understanding of this type of pump, The following is a brief introduction of two common types of multi-stage pumps for reference.

Type D horizontal multistage centrifugal pump: a new energy-saving pump with single suction multistage and segmented structure, which has the advantages of high efficiency and low noise, excellent cavitation resistance and long service life. It is usually used to transport clean water, and also widely used for other liquids with physical and chemical properties similar to water. Flow range: 19-1700m3/h, lift range: 3-840m, power range: 2.2-1120kw, rated speed: 1450r/min or 2900r/min, optional caliber φ 50- φ 300, working pressure ≤ 6.0Mpa.

GDL type vertical multi-stage pipeline centrifugal pump: a multi-stage pump with pipeline structure, the outlet is located at the same horizontal line, and the composition structures are shaft, impeller, impeller retainer sleeve, shaft sleeve, etc. At present, the pump is mainly used for circulation and pressurization of cold and hot clean water in high-pressure operation system, parallel water supply of multiple pumps in high-rise buildings, fire protection, boiler water supply and cooling water system, and transportation of various flushing fluids. In terms of performance parameters, the upper limit of flow is 160m3/h; The upper limit of lift is 200m; The rated speed is 2900r/min, and the optional caliber range is φ 25- φ 150。

The above contents briefly introduce the characteristics of multistage pump. It can be seen that the pump is mainly suitable for occasions with higher standards for head. Considering that the multistage pump is higher than ordinary centrifugal pump in terms of pump manufacturing process and cost, it is recommended that users select the corresponding pump type according to the actual working conditions.

MST as a senior multi-stage pump manufacturer, has rich experience. Our pumps have been sold to 22 countries and regions in the world. If you have any problems in the selection process, you can contact MST staff in advance to select an international pump more suitable for you.