There are many kinds of dredgers, but the most important one is the dredge pump, which is the key equipment of the dredger and is often called the "heart" of the dredger.

A good mud pump needs to deal with mud with high impurity content, so suction and wide flow plate are very important for them.

The pump body adopts a round valve with special structure, which is opened when the outlet pressure is higher than the working pressure. Then, some medium will return to the inlet of the pump or storage tank through this annular valve. At the same time, the pump can be started under full pressure, thus greatly reducing torque.