Patent ID: 6176263
Filing Date: 2001-01-23
Classification: F16L,Y10T

Abstract:
A circuit breaker for handling fluid under pressure, the circuit breaker including a connector having a fluid passageway therethrough which is closable by a valve movable along an axis of displacement with respect to a valve seat, a first annular seal seated within a first annular housing formed in a portion of said valve for normally sealing an interface between said valve and said valve seat when said valve is seated against said valve seat to close fluid flow through said passageway, at least one first fluid circulating channel for introducing fluid under pressure into a first counter-pressure zone downstream of said first annular seal toward said interface and encircling said first annular seal whereby upon initial opening of said valve fluid under pressure enters said first counter-pressure zone and urges said first annular seal within said first annular housing.