초록 ▼

A fluid valve capable of operation in high pressure, bidirectional flowpaths includes a chamber having a circular port in which an axially and radially movable seat ring is engaged by an eccentrically movable valve plug having a spherically convex sealing surface. The plug is mounted to a valve shaf

A fluid valve capable of operation in high pressure, bidirectional flowpaths includes a chamber having a circular port in which an axially and radially movable seat ring is engaged by an eccentrically movable valve plug having a spherically convex sealing surface. The plug is mounted to a valve shaft supported in the body for rotation about an axis transverse to, but offset from, the centerline of the port. The seat ring, body and a retainer ring include among them a pair of annular channels for retaining a pair of seals adapted for improving their sealing action with pressure.

대표청구항 ▼

A fluid valve comprising: a body including a valve chamber defining a flowpath; a valve shaft extending into said body; a valve plug, having a spherically convex sealing surface, rotatably mounted in said body for limited eccentric movement about an axis in response to the movement of said valve sha

A fluid valve comprising: a body including a valve chamber defining a flowpath; a valve shaft extending into said body; a valve plug, having a spherically convex sealing surface, rotatably mounted in said body for limited eccentric movement about an axis in response to the movement of said valve shaft; an annular seat ring adapted for sealing engagement with the sealing surface of said valve plug to block said flowpath; means mounting said seat ring in said body for limited movement of the center of said annular seat ring axially to and transversely of said valve plug such that said valve plug tends to center said seat ring during closure of said valve; and sealing means sealing the periphery of said seat ring and said body against fluid leakage.