The Grundfos KP submersible drainage pump is a vertical single-stage stainless steel submersible pump with vertical discharge port and integrated submersible 1-phase canned motor in insulation class F with thermal overload protection. The pump is fitted with a suction strainer, a carrying handle and KP 150/250's are supplied with a 5 m mains cable, and the KP{35 with a 10 metre cable. The impeller is a semi-open impeller for 10 mm free passage suitable for pumping groundwater, surface water, rain water and similar liquids. The pump has a double shaft seal consisting of two lip seals with grease in-between. The pump has an outer casing ensuring continuous cooling of the motor by the pumped liquid. The rotor shaft operates in two maintenance-free carbon bearings cooled by the pumped liquid. The motor is filled with a non-toxic motor liquid, but should not be used in fish ponds.