Abstract: The invention relates to a device for connecting a heating apparatus to the feed and return sections of a heating system of a building, wherein there is a water inlet channel with an inlet and an outlet connection, wherein the feed section of the heating system can be attached on the inlet connection, and the inlet of the heating apparatus can be attached on the outlet connection, there is a water outlet channel with an inlet and an outlet connection, wherein the outlet of the heating apparatus can be attached on the inlet connection, and the return section of the heating system can be attached on the outlet connection, and there is at least one connection, in particular a side connection, to the water inlet channel and/or to the water outlet channel between the inlet and outlet connections for a measuring device, pump, and/or a connecting hose.

Abstract: The invention relates to an apparatus for distributing and controlling a heat carrier which originates from a heat and/or cold source, in particular hot and/or cold water, which is supplied to heating and/or cooling bodies and/or surfaces in rooms of a building, wherein the feed of the heat and/or cold source issues into a feed chamber from which the feeds of the heating and/or cooling bodies and/or surfaces branch off, wherein the returns of the heating and/or cooling bodies and/or surfaces issue into a return chamber of the apparatus, from which return chamber the return of the heat and/or cold source emanates, and wherein in particular a controlled decentralized pump is in each case arranged in the feeds and/or returns of the heating and/or cooling bodies and/or surfaces.

Abstract: The invention relates to a motor centrifugal pump having a plastic-injection-moulded stator core of the electric motor, wherein cooling channels are arranged in the plastic, through which channels the conveying medium flows.

Abstract: A centrifugal or rotary double pump has a singular circular casing surmounting two motors driving individual rotors within the casing. Above a flat side of the casing is attachable to the device serviced by the double pump and receives an insert defining the inlet and outlet apertures and within the housing, defining two pump units each in conjunction with the respective rotor.

Abstract: The invention relates to a double centrifugal pump having two electrically connected electric motors which project from the pump casing and are disposed parallel with one another in separate motor casings, there being diposed on each of the two electric motor casings an electric connection place to which a single plug can be attached which makes contact with the electric contacts of the two motor connection places.