Non-refillable valve

Non-refillable valve for a pressure container, comprising:

• (a) a housing, having a central passageway which has a lower portion that is narrower than the middle portion of said central passageway and which has an upper portion that is narrower than middle portion of said central passageway, and having a side port which communicates with the lower region of said middle portion of said central passageway, the lower end of said housing being adapted to sealingly engage said pressure container in a manner which provides communication between said pressure container and said lower portion of said central passageway;
• (b) an outlet nozzle, having a bore lengthwise therethrough, said outlet nozzle being positioned on the side of said housing and being in communication with said middle portion of said central passageway via said side port in said housing;
• (c) valve stem means positioned in said upper portion of said central passageway in a rotatable manner which advances the valve stem means back and/or forth in said central passageway, there being a central bore in the internal end of said valve stem means, said internal end extending into said middle portion of said central passageway, and said central bore not extending through the top of the valve stem;
• (d) a resilient valve sealing member which has a body portion, an upper flange that extends upwardly and outwardly from said body, and a vertical post positioned in the middle of the top surface of the upper flange, said vertical post slidingly and rotatably engaging said central bore in the bottom of said valve stem means;
• and
• (e) a washer-shaped member having a central hole being located between said vertical post of said valve sealing member and the bottom surface of said valve stem means, said vertical post being located in a slidable manner in said central hole,
• said flange portion of said sealing member being compressingly positioned in said upper portion of said central passageway, when said valve is inactive or being filled, said valve sealing member being pushed into said middle portion by means of said valve stem means when said valve is placed in the active position, said valve sealing member being seated against the interface between said middle and lower portions of said central passageway when said valve is closed and said sealing member being positioned in said middle chamber above the seating interface when the valve is used for discharge of said container, and said sealing member sealingly engaging said seating interface when refill of container with pressurized fluid is attempted.