Compact multi-service ball valve

Abstract

A ball valve having a two component body with a bonnet section formed integrally with one of the body components. A first body member defines a first flow passage and a first end of a valve chamber. The second body member forms a second flow passage and a second end of the valve chamber. Formed about the first flow passage is a first sleeve member which extends axially into the valve chamber. A cylindrical stem receiving chamber is also formed in the first body member and extends radially outwardly from the valve chamber to open to the exterior of the first body member through an inwardly facing shoulder. Inner and outer radially spaced sleeves are formed integrally with the second body member and extend into the valve chamber circumferentially about the second flow passage. The inner sleeve is aligned with the first sleeve member formed about the first flow passage on the first body member. A valve ball is mounted in the chamber in axial alignment with the first and second flow passages. Seat rings are positioned about the first and second sleeve members and biased into engagement with the valve ball. An operating stem is provided for rotating the ball. The operating stem is positioned axially of the stem receiving chamber and has a pair of spaced, outwardly extending integral flanges located axially inwardly of the shoulder. Stem seal means are located between the pair of flanges and a resilient bearing ring is located between said shoulder and the outermost flange of said pair of flanges.