High pressure sealing means

Claim 1

In a valve including a first component defining a tubular passage for flow of pressurized fluid, and a second component secured assembled to said first component coaxially of said passage forming an elongated joint therebetween which connects with said passage, the improvement comprising sealing means to maintain said joint pressure tight and comprising: a. means defining L-shaped coplanar opposite annular channels located to each side of said joint and extending toward each other for providing a common base between the side walls thereof; b. a stiffly resilient annular metallic seal ring generally Vshaped in cross section with legs angularly diverging from an apex, said seal ring being arranged spanning said joint toward said base with its apex in general coalignment with said joint and its legs diverging toward the walls of said opposite channels and adapted to cross sectionally terminate therewithin; c. a follower ring generally coextensive with said seal ring and having an angular surface relatively more shallow than said ring in uniform engagement against the apex thereof; and d. advance means operably engaging said follower ring at a location removed from the seal ring engaging surface thereof to advance said follower ring axially against said seal ring spreading the legs of the latter uniformly along said base into sealing engagement with the side walls of said channels.