It is a one-speed circulation pump that can be used in both open and closed systems. The pump is of the wet-rotor type, l.e. pump and motor form an integral unit without a shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid. The pumps are designed for circulation of liquids in heating and air-conditioning systems. Examples of typical applications are: One- and two-pipe heating systems /Boiler shunt pumps /Pumps for heating surfaces /Calorifiers/ Underfloor heating systems /Solar heating systems /Heat pump systems /Geothermal heating systems / Heat recovery systems /Two-pipe air-conditioning systems /Pumps for refrigeration units.