| 摘要 |
Valve for use with liquid pressure gas cylinders comprising a valve body having a shank threaded into the cylinder, and having a central bore leading to a valve seat, and a manually actuated valve movable into sealing engagement with the seat, a safety valve located on the inner end of the shank and connecting with the bore, the safety valve being adapted to seal the bore against outflow of gas at an abnormal rate, and means responsive to final closing movement of the valve member for opening the safety valve seal.
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