| 摘要 |
<p>A pipe fitting with automatic release and immediate water seal closing in response to a strong axial traction is described. The fitting is formed of two fitting parts (1, 2, 2') passed through by respective axial ducts (10, 26, 26') for a flow of fluid and provided with means (3) for the rigid coupling of said parts (1, 2, 2') that are formed in such a way so as to allow the automatic separation of the same parts in case of an axial traction above a predetermined limit. At least a first one (1) of said parts (1, 2, 2') of the fitting comprises means for the interception of the flow of fluid that is automatically activated up to a water seal closing position by the separation movement of said parts of the fitting, and it comprises a ball segment valve (23) that responds to that separation movement with a combined motion of rotation around an axis perpendicular to the longitudinal axis of the respective fluid duct and of sliding along said longitudinal axis until it reaches a forced rest and water seal position against a seal packing (25).</p> |
