A manifold has a frame and a plurality of valves supported by the frame, each valve having a cross gear. The manifold also has a screw drive and a splined rotatable shaft parallel to the screw drive. The manifold further includes a slider driven by the screw drive over the splined rotatable shaft. The slider includes an actuator that protrudes from the slider to engage one of the cross gears to actuate a respective one of the plurality of valves.

The invention relates to a radiator (1, 11) with a heating water duct system, within which heating water is able to be transported from a heating water intake (3, 15) to a heating water outlet (4, 16),

wherein the heating water duct system comprises: heating segments (5,6,12,13,14) with respectively an internal cavity for receiving heating water, which in a ready-to-operate state of the radiator (1, 11) are arranged over one another in gravitation direction, and which respectively have an inlet opening for the supply of heating water and an outlet opening for the removal of heating water; a connecting pipe (7, 17), which connects the outlet opening of a first heating segment (5, 12) with the inlet opening of a second heating segment (6, 13);

wherein the heating water inlet (3, 15) is connected to the inlet opening of the first heating segment (5, 12), and wherein the second heating segment (6, 13) in the ready-to-operate state of the radiator (1, 11), viewed in gravitation direction, is arranged above the first heating segment (5, 12).