Patent ID: 6732996
Filing Date: 2004-05-11
Classification: F16K

Abstract:
A gas cylinder valve with an outlet connection comprising:a valve body having a valve chamber, an inlet passage and an outlet passage, said inlet passage and said outlet passage communicating with said valve chamber, and said outlet passage extending through said outlet connection; a valve seat located between said valve chamber and said outlet passage in axial alignment with said outlet passage; an obturating body associated with and movable relative to said valve seat in axial alignment with said outlet passage; a valve stem connected to said obturating body for moving the latter between a closed position, wherein said obturating body sits on said valve seat so as to seal gas discharge through said valve seat, and an open position, wherein said obturating body is spaced from said valve seat so as to allow gas discharge from a gas cylinder through said valve seat, said valve chamber being under gas cylinder pressure when said obturating body sits on said valve seat; a first diaphragm member forming a flexible wall of said valve chamber, wherein said first diaphragm member is mechanically connected via said valve stem to said obturating body, so that gas pressure acting in said valve chamber onto said first diaphragm member when said valve is closed pulls said obturating body via said valve stem onto said valve seat by elastically deforming said first diaphragm member; a sealing cap to be put onto said outlet connection; and a locking device integrated in said sealing cap for pushing said obturating body firmly against its seat, when said sealing cap is put onto said outlet connection.