Non-refillable valve

Details Non-refillable valve Non-refillable valve

1993-08-03

1994-03-22

Chambers, A. Michael

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

13753321, 251356, 222147, B65D 4702

Patent

active

052955028

ABSTRACT:
A non-refillable valve for a pressure container which includes a housing with a central passageway, which has a lower portion that is narrower than its middle portion which in turn is narrower than its upper portion. A side port is present in the lower region of the middle portion and an outlet nozzle is attached to the side port. The lower end of the housing is adapted to sealingly engage the pressure to provide communication therebetween. The valve stem is rotatably positioned in the upper portion of the central passageway. The internal end of the valve stem extends into the middle portion of the central passageway and has a longitudinal central bore present part way through the body portion. A resilient valve sealing member has a body portion and an upper flange that extends upwardly and outwardly from the body. A vertical post is positioned in the middle of the top surface of the upper flange and slidingly and rotatably engages the central bore on the bottom of the valve stem. A washer-shaped member fits over the vertical post in a slidable and rotatable manner. The washer-shaped member can be free floating on the valve sealing member or can be adhered to the bottom of the valve stem or the top of the valve sealing member. The flange portion of the sealing member is compressingly positioned in the upper portion of the central bore when the valve is inactive or being filled. The valve sealing member is pushed into the middle portion by means of the valve stem when the valve is placed in the active position. The sealing member engages the seating interface when any refill of the container with pressurized fluid is attempted.

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