| 摘要 |
<p>The invention concerns a device for connecting (B) a branch pipe (54) on a fluid-transporting piping system (C); said device (B) comprises: a support portion (12) on a wall of the piping system (C); a piece (28) for connecting the pipe (54); a perforating member (20) provided with a cutter (70) for perforating the wall (10) and a cylindrical portion (71) mounted atop the cutter whereof the outer face (60) is smooth; a shaft (16) cylindrical in shape along an axis (51) which receives the perforating member (20) and wherein the perforator can be displaced by screwing to pass from a position perforating the wall (10) to a retracted position inside the shaft (16); sealing means (E, 30) between the shaft (16) and the perforating member (20); the support portion (12), the connecting piece (28), the shaft (16) and the sealing means (E) are made integral by moulding or overmoulding, and the sealing means are supported on said outer face of the perforating member (20).</p> |
