Patent ID: 6601604
Filing Date: 2003-08-05
Classification: A62C,F16K,Y10T

Abstract:
A multi-function unitary valve system for use in a fluid system containing a fluid and having pressure testing, pressure relief, and drain/test free fluid flow capability, comprising, in combination:a) a valve body having an inlet portion an outlet portion, and a valve seat; b) a valve riser affixed to said valve body and having an exterior surface and an internal bore; c) a valve stem concentrically disposed within said valve riser and having an upper portion and a lower portion; d) a first sealer, to assist sealing at said valve seat, affixed to said lower portion of said valve stem and structured and arranged for engagement with said valve seat when said valve stem is lowered; e) a controller, adjustably attached to said exterior surface of said valve riser, structured and arranged to implement raising and lowering of said valve stem; f) an engaging element, structured and arranged to attach to said valve stem adjacent said upper portion of said valve stem and to engage said controller; and g) an urger structured and arranged to urge said first sealer towards said valve seat.