| 摘要 |
<p>The invention relates to a method and means for connecting a branch conduit to an existing conduit (9) through a valve (1, 2), the valve being connected to the conduit in such a way that its flow channel (8) being directed tangentially towards the conduit (9). By means of a tool (12, 16, 20) fixed to the outlet of the valve it is possible to cut an opening in the conduit (9) through the open valve (1, 2). The tool is designed in such a way that the cut-out portion (14) of the conduit will be caught by and retained within the same. After the closing of the valve the tool is being dismounted, the cut-out portion of the conduit being removed together with the tool and the branch conduit could be connected instead of the tool.</p> |
