Ball valve sealing ring

摘要

A ball valve sealing ring is provided for sealing between a ball valve member a valve body. The sealing ring may comprise a ring body having a ball valve member-contacting surface and one or more valve body-contacting shoulders for contacting the valve seat. The sealing ring may comprise a resilient ring core for providing bending resistance. The resilient ring core may be at least partially conical and may have a curved cross-section with a convex side oriented towards the member-contacting surface. The cross section may be of a geometry corresponding to the outer contour of the ring body or shoulders and may have ends bent towards the member-contacting surface. The ring core may also have a plurality of apertures spaced about its circumference. The sealing ring may be elastically deflected upon contact with the valve member. Also provided is a ball valve seating arrangement comprising the aforementioned sealing ring.