The choice of pump type

The choice of pump type

The type of pump should be reasonably selected according to the process parameters of the device, the physical and chemical properties of the conveying medium, the operating cycle and the structural characteristics of the pump.Therefore, in addition to the following circumstances, centrifugal pumps should be selected as far as possible.

(1) When there are metering requirements, choose metering pump.

(2) When the head requirements are very high, the flow is very small and there is no suitable small flow high head centrifugal pump available, the reciprocating pump can be selected;If the cavitation requirement is not high, the vortex pump can also be selected.

(3) When the head is very low and the flow is very large, axial flow pumps and mixed flow pumps can be selected.

(4) When the medium viscosity is large (greater than 650 ~ 1000mm2/s)

you can consider choosing a rotor pump or reciprocating pump;When the viscosity is special, the specially designed high-viscosity rotor pump and high-viscosity reciprocating pump can be selected.

(5) Gas content of medium >5% 

When the flow rate is small and the viscosity is less than 37.4mm2/s, the vortex pump can be used.If the flow rate is allowed to pulsate, a reciprocating pump can be used.

(6) For frequent start-up or inconvenient irrigation pumps, pumps with self-priming performance should be selected, such as self-priming centrifugal pumps, self-priming vortex pumps, positive displacement pumps, etc.