When choosing a suitable pump, it is necessary to consider parameters such as liquid viscosity, flow rate, head, and self-priming ability, stability, and corrosion resistance of the pump. At the same time, you can also consult professional pump manufacturers or engineers to select according to specific working conditions and needs.

The flow range of centrifugal pumps is usually large, and the flow adjustment methods are flexible and diverse, which is suitable for large flow and high head occasions; while the flow range of positive displacement pumps is relatively small, and the flow stability is better, which is suitable for small flow and occasions that require precise flow control.