Single lever mixing valve

Details Single lever mixing valve Single lever mixing valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/117

F16K 11/14 (2006.01) F16K 11/02 (2006.01) F16K 31/524 (2006.01)

Patent

CA 1243252

ABSTRACT OF THE DISCLOSURE Disclosed is a proportioning valve which is of simple design compared to prior art arrangements and is easily con- structed. The valve comprises lower and upper body members, the lower body member having a chamber region closed off by a flexible diaphragm of elastomeric material or, in an alternative arrange- ment, two diaphragms. The bottom of the chamber region has first and second inlets and the wall of the chamber has at least one outlet. Two cam followers are secured above the diaphragm, for axial movement only, in alignment with the inlets and they co- operate with a face cam which is movable both axially and rota- tionally. Rotation of the face cam results in one cam follower moving up, while the other moves down, thus resulting in movement of one portion of the diaphragm towards its associated inlet while the other moves away from its associated inlet, thereby con- trolling the relative rates of flow of liquid into the chamber region from the inlets. Axial movement of the face cam causes both cam followers to move upwardly or downwardly by the same amount, thus similarly moving the associated portions of the diaphragm and controlling the total rate of flow of liquid into the chamber region. A handle with a second cam is provided whereby rotation of the handle rotates the face cam while pivoting of the handle results in axial movement of the face cam.

471637

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