Non-self-priming, single-stage, centrifugal pump designed for handling wastewater, process water and unscreened raw sewage. The pump is designed for intermittent and continous operation. The cooling jacket ensures that the pump can operate submerged or dry installed without motor cooling. The revolutionary S-tube® impeller provides free spherical passage of solids up to 110 mm and suitable for wastewater with a dry matter content of up to 3 %. For installation on auto coupling, the Grundfos SmartSeal gasket system provides a leak-proof connection. The pump comes with a high efficient Grundfos blueflux® motor made with IE3 components.