Abstract: An improved control valve (20) for selectively connecting one or more inlet ports with one or more outlet ports to establish fluid communication there between is provided. This control valve (20) includes a housing (26) having a wall which defines at least one inlet port and at least one outlet port. A moveable rotor (25) is positioned within a chamber (30) defined within the housing (26). This rotor (25) includes at least one groove (33) having a configuration such that fluid communication can be established between a selected inlet port and a selected outlet port upon movement of the rotor groove (33) into alignment with the ports between which fluid communication is desired. Means are provided for driving or moving the rotor to the desired positions for establishing fluid communication between selected ports.