Abstract: A liquid or fluid-flow control valve of four-part construction is shown having a longitudinally extending, open-end housing within which a plug-like stationary seating part is centrally positioned to direct fluid flow between end and side-positioned inlet and outlet portions of the housing and as controlled by a rotatable stem part having a sleeve portion that is positioned concentrically about the seating part. The stem part projects through one end of the housing and has a side port that is moved into and out of alignment with a side port in the seating part. The seating part is provided with an obliquely-positioned ringlike sealing gasket, and the stem and the seating parts are removably mounted within the housing part by an end-positioned cooperating bonnet part.

Abstract: A faucet for somewhat universal usage is provided with a self-contained, replaceable cartridge unit which has a pair of pin-like valve elements and a hollow cylindrical operating cam for effecting individual and dual control of the opening and closing of a flow through a pair of inlet-seating passages, such as for cold and hot water. The cam is provided with an operating stem and knob for turning it to control the amount of flow from either of a pair of inlets and for moving it longitudinally or axially to further control flow into a mixing chamber and out through a side outlet in the cartridge. The cam may be operated selectively to provide a full or proportionate flow of either hot or cold water or of both of them. The operation of the valve elements is positively guided throughout as controlled by the operating stem and the cam and without the need for spring means or the like.