Valve seat

Details Valve seat Valve seat

1992-07-13

1993-11-23

Rosenthal, Arnold

Valves and valve actuation

Rotary valves

Seat or interface seal

251315R, 251333, 251163, F16K 506, F16K 520

Patent

active

052636852

ABSTRACT:
A valve seat arrangement sealing against a valve core in a valve, particularly for a ball valve, having an inner ring with a first deflectable sealing lip and an outer ring with a second deflectable sealing lip. The first deflectable lip is arranged to protrude forwardly to make initial contact with a closing valve core and once deflected, the second lip is arranged to land against said closing valve core forming a secondary seal. The first sealing lip and the second sealing lip are fashioned having selectively angled beveled surfaces facing the core. The invention provides an effective sealing arrangement for high temperature service.

REFERENCES:
patent: 2076840 (1937-04-01), Heggem
patent: 2076841 (1937-04-01), Heggem
patent: 2516947 (1950-08-01), Blevans
patent: 2719022 (1955-09-01), Blevans
patent: 3515371 (1970-06-01), King et al.
patent: 4280522 (1981-07-01), Pechnyo et al.
patent: 4601308 (1986-07-01), Stone et al.
Xomox Corp. Impact Valve News, Jun./Jul., 1990 issue, p. 2.
Jamesbury Bulletin 244 entitled: "Metal Seated Wafer-Sphere Butterfly Valves".
Jamesbury brochure entitled: "Series 8500 14"-36" Wafer-Sphere Valves".
Fisher Controls brochure entitled: "150 lb. Vee-Ball Construction Features".
Fisher Controls brochure entitled: "Control Valves Eccentric-Disc Valve Body Assemblies".

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