The Grundfos Unilift range of stainless steel submersible pumps are suitable for sump applications as well as drainage and grey water. Pumps are fitted with a semi-open stainless steel impeller capable of passing particles to 12mm in size. The combination of shaft and oil filled lip seal with seal faces of silicon carbide result in an extremely long operating life and make these pumps suitable for use by contractors and hire companies as well as the home owner. The vertical discharge port is 40mm female BSP and we strongly recommend installing 40mm ID pipe. The pipe moving the water along the ground should always be 50mm ID. A high flow fully automatic single phase submersible built to handle hard work. Click here for the pdf spec sheet. The pump comes complete with 10m of electrical cable and a standard 3-pin plug plus an automatic level switch.