Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
137430, 137437, 138 37, 251127, F16K 3134, F16K 3300
A ballcock is constructed with upper and lower housing members which are joined by a bayonet-type fitting. The juncture of the upper and lower members defines a valve chamber which sits atop the orifice of a vertical inflow tube carrying water from below the lower housing member. A valve in the valve chamber controls the flow of water out of the orifice. The valve includes separate, spaced upper and lower resilient valving members that provide a pressure chamber. Pressure in the chamber is controlled by a spherical-head metering pin passing through apertures in the upper and lower members. A slip-on silencer telescopes over the orifice and defines, with the exterior of the inflow tube, a quieting passage. The quieting passage has an annular intake at the top and terminates below in a pair of downward directed nozzles. The spherical-head metering pin makes a ball-and-socket connection with a lever. The lever is resiliently connected to the upper housing member and operated by a metal rod connected to a float.
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patent: 4466741 (1984-08-01), Kojima
Shames Sidney J.
Walton George L.
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