Valves and valve actuation – Rotary valves – Butterfly
Patent
1996-07-19
1997-11-11
Fox, John
Valves and valve actuation
Rotary valves
Butterfly
251305, F16K 122
Patent
active
056855206
ABSTRACT:
A valve including an annular groove in the valve body at the periphery of the valve disc. A fire-safe seal provides a fluid seal between the valve disc and the valve passageway. A seal is disposed in the annular groove having an axial projection for retaining the seal and a sealing surface projecting radially inwardly in the passageway and being engageable by the peripheral edge of the valve disc. This sealing surface has an inverted resilient J-shaped portion. The seal also has a circumferential slot for receiving a metal ring to provide circumferential stability. A retaining ring having a blocking groove extends axially and inwardly thereof for receiving the distal end of the resilient J-shaped portion.
REFERENCES:
patent: 3734457 (1973-05-01), Roos
patent: 4114856 (1978-09-01), MacGfee et al.
patent: 4195815 (1980-04-01), Stager
patent: 4202365 (1980-05-01), Aoki et al.
patent: 4220172 (1980-09-01), Stager
patent: 4266752 (1981-05-01), Johnson
patent: 4272054 (1981-06-01), Zinnai
patent: 4331319 (1982-05-01), Summers et al.
patent: 4398695 (1983-08-01), Torche
patent: 4487216 (1984-12-01), Barker et al.
patent: 4491298 (1985-01-01), Beauchamp et al.
patent: 4505290 (1985-03-01), Scobie
patent: 4513946 (1985-04-01), Priese
Evaluation of High Performance Butterfly Valves with Resilent Seats --Design Parameters (not published).
Fox John
Velan Inc.
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