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If there is no junction available in the existing sewer for additional house connections, a branching is formed as below:

1. By using the drilling machine a hole is made in the main sewer
2. Insert the B-Ring into the drilled hole
3. Apply lubricant
4. The spigot of the branch piece is inserted into B-Ring by which we get a tight junction.

A - The branch piece should not project into the main sewer and must be adapted to the inner curvature of the main sewer.

B - Two types of drilling tools are available, one for 45° drilling and another for 90° both tools can be supplied with electric motor or compressed air drive.