Shut-off valve with a seal formed from an elastic strip

Details Shut-off valve with a seal formed from an elastic strip Shut-off valve with a seal formed from an elastic strip

1983-02-23

1985-07-09

Schwadron, Martin P.

Valves and valve actuation

Rotary valves

Butterfly

251327, 251328, 251362, 251365, F16K 1226

Patent

active

045277737

ABSTRACT:
A shut-off valve, particularly for use in a pipeline for conveying gases, includes a valve casing, a valve member mounted for movement between a valve open position and a valve closed position, and a casing seal mounted on at least one of the valve casing and the valve member for forming a seal with a sealing surface at least when the valve member is in the valve closed position. The casing seal includes a frame member having two legs extending in a direction toward the position of the sealing surface when the seal is formed. The two legs are spaced and define therebetween an open channel. The casing seal further includes a seal member formed from a substantially flat elastic strip which is deformed to include two leg portions which are positioned between and freely and elastically urged toward respective inner surfaces of the legs of the frame member and a bent portion which connects the two leg portions and which projects outwardly of the channel for sealing contact with the sealing surface.

REFERENCES:
patent: 2606046 (1952-08-01), Bonner et al.
patent: 2996063 (1961-08-01), Lowe
patent: 3069179 (1962-12-01), Johnson
patent: 3504883 (1970-04-01), Beck
patent: 4037819 (1977-07-01), Kindersley
patent: 4058290 (1977-11-01), Nelimarkka
patent: 4162782 (1979-07-01), Wilkins
patent: 4256143 (1981-03-01), Magill et al.
patent: 4334550 (1982-06-01), Connor et al.

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