Fluid handling – Systems – Multi-way valve unit
Patent
1981-11-02
1983-03-29
Schwadron, Martin P.
Fluid handling
Systems
Multi-way valve unit
13762517, 1376363, F16K 1102
Patent
active
043780296
DESCRIPTION:
BRIEF SUMMARY
In many single handle faucets the handle is in the form of either a knob or a lever-type handle. Both types of handle tilt upward in the same manner to initiate water flow, but a rotation to the right of a knob produces a clockwise rotation of the body of the handle, whereas a movement of a lever to the right produces a counter clockwise rotation of the body of the handle, and vice versa. Because of the need to follow the convention of having cold water flow from a movement of the control handle to the right and hot water flow with a movement of the handle to the left, the mixing valve housed within the body of the faucet has usually had to be designed to be used with only one of these two general types of handle.
Single control faucets are frequently used in multiple-dwelling structures, of which high-rise apartment blocks, hotels and the like are typical. It is the customary practice in multiple-dwelling buildings, office blocks, and the like to locate separate lavatory facilities in adjoining rooms. In this way it is possible to realize substantial construction cost savings by placing plumbing fixtures back-to-back on opposite sides of a common wall or partition. Frequently, in these circumstances, the fixtures are connected to common hot and cold water supply risers. The reverse orientation of the hot and cold water mixing valve inlets on the plumbing fixtures relative to the common conduits to which they must be connected in this back-to-back arrangement creates an obvious difficulty with respect to the need to follow the convention outlined above permitting cold water flow upon turning the control handle to the right and hot water flow upon turning the handle to the left for faucets on both sides of the partitions. Ordinarily, expensive and time consuming plumbing procedures have been required to connect the valves in a manner that will preserve this conventional arrangement.
Single handle mixing faucets sometimes incorporate a mixing valve which includes a hollow valve body in which are formed respective inlet openings for entry of hot and cold water from the water supply lines and outlet openings for discharge of the water into a spout and thence into a sink or lavatory in the desired quantity and at the desired temperature. A valve seat is provided within the valve body and includes ports that correspond to the water inlet openings in the valve body. A valve plate also is provided and arranged for slidable contact with the valve seat. The valve plate frequently has either recesses formed in its surface adjacent to the valve seat or ports that penetrate the valve plate. Through appropriate manipulation of the control handle, the recesses or ports in the valve plate are disposed to cooperate with the corresponding ports in the valve seat to mix hot and cold water to produce a desired mixture temperature and intensity.
DISCLOSURE OF THE INVENTION
Accordingly, it is an object of this invention to provide a mixing valve that satisfies all of the basic requirements for such a valve and one which is easily adaptable to a knob or lever-type control handle faucet and which is easily adaptable in the field to back-to-back plumbing installations.
Other objects of this invention are to provide a mixing valve which is smaller, less expensive to manufacture, and easier to operate than prior-art mixing valves.
Briefly, I have fulfilled the above-listed objects, and other objects of my invention, by providing a mixing valve incorporating a stationary valve seat, of ceramic or other material, having two ports that establish fluid passages for hot and cold water, respectively, from the supply lines. A movable valve plate, of ceramic or other material, having a peripheral aperture (or bight) and a generally central aperture, is positioned, through manipulation of the handle to which it is coupled, in sliding engagement with the upper, or downstream, surface of the stationary valve seat, the valve plate apertures having a major dimension and a minor dimension perpendicular thereto. The sliding motion of the movabl
REFERENCES:
patent: 3965936 (1976-06-01), Lyon
American Standard Inc.
Crooks Robert G.
Rivell John A.
Salerno, Jr. James J.
Schwadron Martin P.
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