| 摘要 |
<p>The fitting has a female unit (12) comprising an external tubular part (13). A coupling part (15) of a male unit is assembled at the interior of the part (13). Joints provided between the parts (13, 15) delimit annular chambers (27, 28). The chambers are placed in communication during a coupling phase, by a groove positioned in an external wall of the part (15), when the part (15) is in coupled or uncoupled position.</p> |
