Pumps for biogas plants, condensate pumping, hydrocarbon pumping, ATEX submersible electric pumps for emptying tanks on board ships and draining bilge liquids, bilge pumps for oily waters, pumps for pumping samples and polluted surface waters, electric well and drainage pumps for areas classified both ATEX and non-ATEX, ideal for leachate recovery from wells, ATEX and non-ATEX electric pumps used in production well connection systems for collecting water.