Washerless valve structure particularly for faucets

Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve

Patent

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Details

1374545, 1374546, 251268, 251357, F16K 4300

Patent

active

043687547

ABSTRACT:
A washerless valve cartridge for a faucet has major components designed to be easily molded in plastics, these major components including a bonnet, a sleeve member and a plunger. The bonnet has a screw thread for retaining it on the open end of a housing having an axial inlet and a side outlet. The sleeve member is arranged to be non-rotatably secured within the housing by the bonnet, and is an integral molding of plastics material including an annular inner end portion forming a valve seat and a cylindrical portion extending from the valve seat and having longitudinal slots which allow liquid flow from the inlet to the outlet via the valve seat. A plunger also of plastic is slidable within the cylindrical portion and has projections which engage in the slots to prevent its rotation, the plunger carrying a steel ball valve member which is capable of seating on the valve seat. A valve stem is held for rotation without axial movement by the bonnet, and has a screw thread engaging an internal thread in the plunger for moving the plunger to open and close the valve. The slots in the sleeve perform the dual function of providing the sole means for liquid flow from the valve seat to the outlet as well as guiding the movement of the plunger.

REFERENCES:
patent: 2062422 (1936-12-01), Meese
patent: 2416085 (1947-02-01), Carpenter
patent: 2931618 (1960-04-01), Frauzreb
patent: 3006361 (1961-10-01), Reinemann
patent: 4027851 (1977-06-01), Schlotman
patent: 4109672 (1978-08-01), Szemeredi

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