The ATEX pumps, according to the 2014/34/EU directive, can be installed in potentially explosive atmospheres. The 4” submersible multistage electric pumps for wells, characterized by a floating impeller system, allow the pumping of leachate and polluted liquids with small solids to be managed with ease. The impellers and diffusers are made of special technopolymer with ceramic inserts at the points subject to wear. The temperature of the pumped liquid: +40 °C maximum.