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US 6,719,271 B2Granted
Combination face and plug seal
AssigneeControl Components, Inc.
InventorJamshid Faramarzi
Life of this patent
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AssigneeControl Components, Inc.
InventorJamshid Faramarzi
Estimating the term…
A combination face and plug seal for use in a balanced pressure valve having a valve housing and a valve plug movable within the valve housing between an open position and a closed position. The seal comprises a main body portion and an engagement portion integrally connected to the main body portion. The seal further comprises at least one primary spring which extends along and at least partially between the main body and engagement portions. Integrally connected to the main body portion is at least one seal leg portion, with at least one secondary spring extending along and at least partially between the main body and seal leg portions. The seal is adapted to be retained within the valve housing, with the engagement portion being forced into sealed engagement with the valve plug and the seal leg portion being forced into sealed engagement with the valve housing when the valve plug is closed or moved from the closed position toward the open position.
A combination face and plug seal for use in a balanced pressure valve having a valve housing and a valve plug moveable within the valve housing between an open position and a closed position, the seal comprising:
A balanced pressure valve, comprising:
Dependencies are inferred from the claim text.