Mixing valve.

摘要

A single lever mixing valve (10) adapted for proportioning hot and cold water and for controlling the volume of flow. A valve body (22) has fluid passages (27, 28) which terminate in two spaced apart inlet ports (39, 40) and an outlet port (56) to a valve seat (46). A generally spherical closure member (50) is universally movable within the valve body so as to normally cover and seal the inlet ports in a closed position. Two recesses (66, 68) in the surface of the closure member are spaced apart by a divider portion (70) and extend circumferentially relative to the inlet ports. Due to this configuration, the closure member can be moved to open mixing positions in which each recess completes a fluid passage between one of the inlet ports and the outlet port. The divider portion can be positioned to partially or fully close one inlet port while the other inlet port remains open.