Conventional submersible pumps use the liquid to lubricate and cool the bearings and sealing. If the liquid is corrosive, gaseous and containing solids, there is often a problem with the pumps. Bungartz supplies submersible pumps, which are constructed able to run dry and self-venting. They are suitable for solids and difficult media. The pumps are available in magnetic coupled design and up to a dive depth of 6 m.