Valve seal for fire safe or high temperature valves

Details Valve seal for fire safe or high temperature valves Valve seal for fire safe or high temperature valves

1982-08-09

1984-12-11

Schwadron, Martin P.

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

251173, 251306, F16K 1228

Patent

active

044872160

ABSTRACT:
Disclosed is a flexible sealing ring for a valve having a generally S-shaped cross-section and an extension from one end of that S-shape. The extension is mounted on the valve body and serves as a cantilever means for the sealing ring which is thus sealingly engagable with the peripheral sealing surface of a movable valve member pivotally positioned within the valve passageway. The sealing ring is formed from materials capable of withstanding high temperatures (1000.degree. F.) for sustained periods without impairment of its' sealing capacity. The sealing ring may be used in cooperative combination with other sealing rings, including heat destructible materials such as "Teflon", to form valve seal means effective over a range of temperatures and pressures, including firesafe valve seal means.

REFERENCES:
patent: 2942840 (1960-06-01), Clade
patent: 3077902 (1963-02-01), Vickery
patent: 3394915 (1968-07-01), Gachot
patent: 3734457 (1973-05-01), Roos
patent: 4113268 (1978-09-01), Simmons et al.
patent: 4194749 (1980-03-01), Bonafous
patent: 4201239 (1980-05-01), Kawamura
patent: 4202365 (1980-05-01), Aoki et al.
patent: 4220172 (1980-09-01), Stager
patent: 4231546 (1980-11-01), Eggleston et al.
patent: 4241895 (1980-11-01), Sternenberg et al.
patent: 4271858 (1981-06-01), Snape
patent: 4272054 (1981-06-01), Zinnai
patent: 4293116 (1981-10-01), Hinrichs
patent: 4410163 (1983-10-01), Scobie et al.

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