Alignment maintaining apparatus for trunnion mounted valves.

摘要

An apparatus for maintaining valve element/valve seat alignment in valve assemblies employing trunnion mounted valve elements, the apparatus including a shaft or trunnion (12) attached to the valve element and provieded with an axially extending bore (24) which receives an expandable plug (26), axially fixed relative to the shaft, there being means (34) provided to laterally expand the plug to effect frictional engagement between the plug and the bore of the shaft.