Abstract: Valve apparatus for controlling flow of fluid via one or the other of two inlets defined by said apparatus, and via one or the other of two outlets defined by said apparatus, includes: a body defining a cavity; and a rotor defining porting, and rotatable in the cavity between a first position in which porting in the rotor communicates between one of the inlets and one of the outlets, and a second position in which porting in the rotor communicates between the other of the inlets and the other of the outlets; and an annular collector extending about the rotor and having an annular plenum with a discharge opening, the plenum adjustably rotatable about the rotor to angularly orient the discharge opening; the body having a through passage remaining in communication with the annular plenum as the annular collector is adjustably rotated, the through passage selectively alignable with one of the outlets in the first position of the rotor, and selectively alignable with the other of the outlets in the second position