| 摘要 |
A valve body (12) of each of low and high-pressure couplers (1,2) is urged in a close direction in to a supply side (A) of a partition (11). A stem (13) that penetrates through an opening portion and projects into the receive side (B) is connected to the valve body (12). A cylinder portion (18) is formed on the receive side (B) of the partition (11). A locking mechanism (22) is provided in a vicinity of an end portion of the cylinder portion. A movable sleeve (23) having an annular projecting portion (26) is provided on an inside of the cylinder portion. The movable sleeve (23) is urged to a lock releasing position where a lock of the locking mechanism (22) is released. Each of low and high-pressure plugs (3,4) has an annular projecting surface (34) that can engage with the annular projecting portion (26), a flange (33) that engages with an end portion of the cylinder portion (18), and an engaging portion (32) that can engage with the locking mechanism (22). A distance (a1) from the locking mechanisms (22) to an end portion of the stem (13) in the high-pressure coupler is larger than a distance (a2) in the same position of the low-pressure coupler.
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