Grundfos Unilift KP 250 M 1 Sump Pump


Grundfos UNILIFT KP are stainless-steel submersible pumps designed for pumping non-aggressive water and grey wastewater such as drainage and domestic effluents with particles up to 10 mm. The pump can be used as a portable unit or stationary installation inside and outside buildings.

Suitable for

  • Water treatment - Commercial buildings
  • Domestic wastewater
  • Industrial wastewater

            Unilift KP 250 M 1
            Submersible drainage pump

            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 is supplied with a 5 m mains 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.


            Liquid temperature range:    0 .. 50 °C
            Density:    998.2 kg/m³

            Maximum particle size:    10 mm

            Pump housing:    Stainless steel
                 DIN W.-Nr. 1.4301
                 AISI 304