The Grundfos Unilift AP12.40.06.3 3x400V 10m is a stainless steel waste water pump, max flow rate 5.5l/sec and max head 13m, 1 1/2" threaded connections and 12mm solids handling. The Grundfos Unilift AP range are high quality domestic or light commercial drainage pumps. They can be used for a variety of drainage applications including sumps, washing machines, tank drainage and anything involving slightly dirty water. They can also be used while partially or fully submerged.