Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1975-05-02
1977-08-16
Schwadron, Martin P.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
251 615, F16K 4300
Patent
active
040419738
ABSTRACT:
Disclosed herein is a valve trim assembly wherein a valve cage member and a valve plug are provided which cannot be independently rotated. A valve stem is affixed to the plug and extends out of the cage. The cage and the stem are threaded for attachment to a valve bonnet and an actuator, respectively, and by rotation of the cage, the cage is attached to the bonnet and the stem is attached to the actuator simultaneously. The stem is prevented from unscrewing from the actuator while the valve is in use, by means of the anti-rotation feature. The trim assembly can thus be installed in, or removed from, a valve quickly and with a minimum number of tools.
REFERENCES:
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patent: 1183790 (1916-05-01), Allen
patent: 2230434 (1941-02-01), Porter
patent: 2643849 (1953-06-01), Davis
patent: 2692750 (1954-10-01), Davis, Jr. et al.
patent: 2883145 (1959-04-01), Sage
patent: 3331583 (1967-07-01), Baker
patent: 3389717 (1968-06-01), Povalski
patent: 3489166 (1970-01-01), Williams
Rice Donald D.
Walton Herbert H.
Bolding James C.
Fisher Controls Company
Limpus Lawrence L.
Schwadron Martin P.
Walton G. L.
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