| 摘要 |
<p>The fitting comprises a female element (1) and a male element (2) couplable to each other. Said elements (1, 2) are composed of fixed parts (4, 9; 32) and axially sliding parts (10, 15; 37) that, when at rest, arrange themselves in a closing position of a passage opening (61, 36, 65) for fluid and in occurrence of the coupling between the two elements (1, 2) are displaced by their engagement with corresponding parts of the other element to an opening position of said passage opening (6 1, 36, 65). The male element (2) includes a safety valve (73) to intercept a fluid feed (65) substantially at the end of the coupling manoeuvre of the two fitting elements (1, 2). The male element (2) includes also a pressure relieve valve (46) interposed between said fluid fe ed (65) and a pressure relieve chamber (48) and provided with an opening pin (45) positioned as to be exerted to an opening position of sa id pressure relieve valve (46) just before the opening movement of the safety valve (73).</p> |
