Patent ID: 7578314
Filing Date: 2009-08-25
Classification: F16K,Y10T

Abstract:
1. A fluid pressure control device comprising: a body defining an inlet, an outlet, and a fluid flow path extending from the inlet to the outlet; a guide element coupled to the body and comprising a metal cage having an interior surface defining a sealing surface and a first guide surface; a plug assembly comprising a metal plug positionable within the flow path and coupled to a stem, the plug assembly defining a mating surface and a second guide surface, the plug assembly moveable between a closed position wherein the mating surface engages and seals with the sealing surface of the guide element, and an open position wherein the mating surface is displaced away from the sealing surface of the guide element, the second guide surface of the plug assembly carried by a metal guide ring in metal-to-metal sliding engagement with the first guide surface of the metal cage;