A valve arrangement including a valve housing (10) which includes an inlet port (11) and two outlet ports (12, 13) for fluid flowing through the housing. A valve element (15) is accommodated in a first valve space in the valve housing and movable between two end positions. The valve element includes two surfaces (16), each of which is adapted for co-action with a respective outlet port such as to close an associated outlet port in one and the other of the end positions of the valve element (15). A device (20 or 21 and 26, 47) for resetting the valve element between the positions. The valve element (15) is mounted on one end of a pivotal arm (18) and has the form of a valve plate or disc which includes valve-element surfaces (16) for alternate co-action with a respective outlet port (12, 13). The arm (18) carrying the valve element (15) is connected mechanically to and adapted to drive a further valve element (42), which is accommodated in a separate, second valve space, between two positions in which the further valve element connects one or the other of two fluid inlet ports (43) to a fluid outlet port (45) which is common to the fluid inlet ports.