| 摘要 |
PROBLEM TO BE SOLVED: To secure smooth action of a reset mechanism in a gas plug for resetting an overflow protective valve by interlock with valve opening action in which a direct operated valve moves toward the upstream side in a valve hole formed part. SOLUTION: A pressurized chamber 65 is set in a specified range from an end part on the opposite side of a plug 13 in a cylinder, an end part on the opposite side to the plug 13 in the pressurized chamber 65 is closed by a responsive body 16 operated by pressure when a direct operated valve 21 advances into the pressurized chamber 65, and an overflow protective valve 51 is reset by the responsive body 16 operated. A leak passage to let gas in the pressurized chamber to gradually leak out of the pressurized chamber 65 is formed.
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