Patent ID: 6095493
Filing Date: 2000-08-01
Classification: F16K

Abstract:
A high pressure valve comprising a one piece valve body, defining a fluid passage extending along a flow axis, a closure member mounted within said valve body and having a bore extending therethrough, a stem engaged with said closure member and extending outwardly of a stem passage defined in said valve body for rotating said closure member, about a pivot axis transverse to said flow axis, between an open position wherein said bore is coaxially aligned with said fluid passage of said valve body and a closed position wherein said bore extends transversally to said fluid passage, a sealing system for preventing leakage from said valve body along said stem passage, and a stem blowout protection system including a platform spaced from said valve body and defining an opening aligned with said stem passage for receiving said stem therethrough, said platform and said valve body being of unitary construction, and bearing means provided on said stem between said platform and said valve body outwardly of said sealing system for cooperating with said platform to prevent said stem from being blown out from said valve body due to fluid pressure within said valve body, said bearing means including a split bushing mounted on said stem against a peripheral shoulder thereof, thereby allowing said stem to be installed within said valve body and removed therefrom through said opening of said platform and said stem passage.