A dewatering pump is a centrifugal pump that is used wherever you need to remove water. You can use the pump at construction sites, in tunnels and mines and also in buildings where you need to remove unwanted water. The type of dewatering pump used depends on what media you are going to pump. If you need to remove water with abrasives, then you use a drainage pump with a strainer that prevents bigger stones to enter the pump. If you want to remove water with solids, then the dewatering sludge pump is the best choice.

Dewatering pumps installed as horizontal pumps in dry installation usually have no suction head. They are driven by electric motors suitable for operation in potentially explosive atmospheres. Vertical pumps in the form of submersible borehole pumps offer many benefits for automatically operated dewatering systems. The submersible motor is filled with water and positioned beneath the pumps, flooded and thus adequately cooled. Flameproofing is only required for the cable connections.

In open-cast mining, drainage well trenches equipped with submersible borehole pumps are arranged at the edge of the workings and also in the various levels in a staggered arrangement. The submersible borehole pumps can also be built for high voltages of 3 or 6 kV (in some cases up to 10 kV) as well as for low voltages.

For dewatering or reducing groundwater on large building sites, protection is provided by drainage well trenches equipped with submersible motor pumps in excavations such as for underground railways, bridges or in open-cast mining. Portable submersible motor pumps are often used for pumping out heavily contaminated seepage water in such cases. With the latter type of pump, the motor is arranged above the pump. Their impellers are specially designed to handle waste water (see Waste water pump). A mechanical sealing element protects the motor against the ingress of water. The motor cooling is adequately scaled to enable the pump set to also run when not submerged in water.