Grundfos’ S-Line of energy-efficient wastewater pumps are designed to handle raw, unscreened sewage, effluent, large volumes of surface water and process water in municipal, utility and industrial applications. The solids-handling pump series is available with two types of impellers – SLV/SuperVortex impeller and the SL1/S Tube impeller. The motor ranges from 1.5 to 15 horsepower.