Patent ID: 7322558

Claim:
A non-refillable valve for use with a pressure container, said valve comprising: a valve body having an inside surface defining a longitudinally extending chamber extending therethrough, said chamber having a lower portion communicating with the pressure container to allow filling and selective discharge of said container, said chamber including a valve seat positioned in said lower portion of said chamber, and a transverse opening formed in said valve body and communicating with said valve chamber; a valve stem disposed in said chamber and being movable in said chamber; a valve core communicating with said valve stem, said valve core comprising at least one frangible protrusion for maintaining an initial position of said valve core during initial filling of the container, said valve core further including a flange at a distal end of said valve core, said flange comprising a sealing member for forming a seal with said valve seat; a biasing member residing within a bore of said valve stem; and at least one O-ring abutting said inside surface of said valve body for sealing said valve stem with respect to said valve body; wherein when said valve core is in said initial position, a flow of fluid may pass through said opening and said chamber to fill the container, and wherein said valve core prevents refilling of the container after breaking said frangible protrusion.