Spring and seat assembly for ball valves

Details Spring and seat assembly for ball valves Spring and seat assembly for ball valves

F - Mech Eng,Light,Heat,Weapons

16

K

251/47

F16K 5/20 (2006.01) F16K 5/06 (2006.01)

Patent

CA 1319139

ABSTRACT A spring for a top entry ball valve includes a generally "u" shaped spring body with an open end. The ball valve includes a valve body with inlet and outlet flow passages communicating with a valve chamber. A ball element is mounted in the valve chamber for rotation between open and closed positions relative to the flow passages. A seal element is mounted adjacent each flow passage with a sealing face in opposed sealing relation to the ball element. A moveable seat assembly is located between the seal element and the valve body for maintaining the seal element in sealing relation to the ball element. The spring is located between the moveable seat assembly and the valve body and is adapted to urge the moveable seat assembly and the seal element toward the ball element.

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