| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas connection device which makes a gas less likely to be released to the atmosphere even if a seal member for sealing an area between a nozzle and a receptacle 30 deteriorates.SOLUTION: A gas connection device includes: a nozzle 10; a receptacle 30 which has an insertion space 30S, to which the nozzle 10 is inserted, and a gas passage 30P connected with a gas passage 10P; and a first seal member 41 and a second seal member 42. The first seal member 41 is disposed at the upstream side in a direction that a gas flows in the gas passage 10P, and the second seal member 42 is disposed at the downstream side in the direction that the gas flows in the gas passage 10P. The gas connection device includes a gas recovery passage 34B which leads the gas leaking from the gas passage 30P through a gap and the second seal member 42 while separating the gas from the atmosphere. An introduction port 14a of the gas recovery passage 34B is disposed between the first seal member 41 and the second seal member 42. |
