| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a plug from being detached before a plug internal pressure is reduced to a prescribed value or less, by disabling detaching action from being performed, even when it is intended to be performed after ending valve closing action before sufficiently purging a pressure fluid in the plug. SOLUTION: In this pipe joint, when an outer side sleeve 1 is retracted, an inner side sleeve 9 is engaged with the outer side sleeve 1 through a locking ball 62, to be started to retract with the outer side sleeve 1, but till reducing an internal pressure to a prescribed value, by pressing a slide holder 8 to a rear side by a pressure, a locking ball 61 of a socket 4 is left as locked to a radiation side. Consequently, retraction of the inner side sleeve 9 is impeded by the locking ball 61, and retraction of the outer side sleeve 1 is also impeded. When retraction of the inner side sleeve 9 is impeded, moving in a radiation direction of a locking ball 63 is impeded by the inner side sleeve 9, so as to expose partly the locking ball 63 to inside the socket 4, to be engaged with a peripheral groove 200b provided in a peripheral surface of a plug 200, its detaching is impeded.</p> |
