Pressure relief device with one piece gasket
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United States of America Patent
Stats
-
Dec 24, 2002
Grant Date -
Jul 18, 2002
app pub date -
Jan 18, 2001
filing date -
Jan 18, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a pressure relief valve for attachment to a closed vessel having an opening to vent gas and liquids from the housing should the internal housing pressure rise to unacceptable levels. The pressure relief valve includes a single gasket that seals between a valve disk and a collar disposed about the opening. The gasket is fixed to the collar by a single retaining ring and effects seals with the disk valve in two planes, one seal is in a plane generally parallel to the plane of the opening and a second seal is in a plane generally normal to the plane of the opening. Moreover, the second seal remains in tact for a short time after the first seal is broken to permit the rapid separation of the disk valve from the gasket to vent gas and liquids from the housing.
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