Patent ID: 6382234
Filing Date: 2002-05-07
Classification: E21B,F16K,Y10T

Abstract:
A valve for sub-sea or wellbore use, said valve being a one shot normally closed valve configured to open one time upon activation and stay open, comprising:a body member having a bore therethrough and having at least one inlet port and at least one outlet port in the bore for communicating fluid pressure from the inlet port to the outlet port, the bore having the inlet port and the outlet port normally closed or sealed apart from each other by a movable plug member; at least one means for force biasing the movable plug member to an open position in which the inlet port and the outlet port are in fluid communication with each other, a first force biasing means being an effective annular piston area acting upon the moveable plug member; electrical release means for holding the plug immovable against the at least one force biasing means in the closed position and for releasing the movable plug to move in response to the at least one force biasing means to the open position upon electrical activation thereof.