Quick coupling pipe fitting with safety valve and pressure...

F - Mech Eng,Light,Heat,Weapons – 16 – L

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Details

F16L 37/34 (2006.01)

Patent

CA 2269875

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 (61, 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 feed (65) and a pressure relieve chamber (48) and provided with an opening pin (45) positioned as to be exerted to an opening position of said pressure relieve valve (46) just before the opening movement of the safety valve (73).

Raccord composé d'un élément femelle (1) et d'un élément mâle (2) pouvant être accouplés l'un à l'autre. Ces éléments (1, 2) se composent de parties fixes (4, 9; 32) et de parties coulissant axialement (10, 15; 37) qui assurent la fermeture d'un passage (61, 36, 65) pour le fluide lorsqu'elles ne sont par sollicitées et, sont déplacés par contact avec les parties correspondantes de l'autre élément, jusqu'à une assurant l'ouverture du passage (61, 36, 65) lorsque les deux éléments (1,2) sont accouplés. L'élément mâle (2) comporte une soupape de sécurité (73) qui permet d'intercepter dans une large mesure l'alimentation en fluide (65) à la fin de la manoeuvre d'accouplement des deux éléments de raccord (1, 2). L'élément mâle (2) comporte en outre une soupape de surpression (46) interposée entre l'alimentation en fluide (65) et une chambre de surpression (48) et équipée d'une tige d'ouverture (45) disposée de manière à pouvoir être sollicitée pour entraîner l'ouverture de la soupape de surpression (46) juste avant le mouvement d'ouverture de la soupape de sécurité (73).

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