Patent ID: 6520207
Filing Date: 2003-02-18
Classification: E21B,F16K,Y10T

Abstract:
A valve for controlling the flow of fluid through a component which includes a flow conduit extending therethrough, the valve comprising:a first closure member for controlling the flow of fluid through the conduit; a second closure member for controlling the flow of fluid through the conduit; and a valve stem which is connected to both the first and second closure members; wherein the stem is responsive to an external force to move the first and second closure members from a first position to a second position; and wherein one of the first and second positions corresponds to an open position of the valve, in which the fluid is permitted to flow through the conduit past both the first and second closure members, and the other position corresponds to a closed position of the valve, in which the fluid is blocked from flowing through the conduit by both the first and second closure members.