How to Tee Into a PVC Drain Pipe

Written by david alexander
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How to Tee Into a PVC Drain Pipe
Teeing into a PVC drain pipe is a simple job. (Drain image by Hedgehog from

Any new appliance, bathroom or kitchen fitting that produces waste water will need a waste pipe that carries the waste water to the drain. Your property will have an existing soil stack pipe that, if near enough, you can tee the waste pipe into. There are a number of different connectors available to use, but a strap-on boss connector is the easiest to fit. Teeing into a PVC drain pipe is an easy job that you can do yourself and save on expensive plumber bills.

Skill level:

Things you need

  • Marker pen
  • Drill
  • Hole cutter
  • Strap-on boss connector

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  1. 1

    Locate and mark the position on the drainpipe that you wish to tee into, taking into account other connected pipes and allowing a suitable fall for the waste pipe that you are connecting.

  2. 2

    Drill a hole in the drain pipe, using a hole cutter of the size required for the connector.

  3. 3

    Attach the boss to the drain pipe, following the manufacturer's instructions. Fix in place by fastening the strap behind the drain pipe. Leave any excess strap for now, in case the boss needs to be removed.

  4. 4

    Insert the supplied rubber connector into the boss.

  5. 5

    Push your new waste pipe into the boss connector and tighten the compression cap.

  6. 6

    Check connections are watertight and cut off any excess strap from the boss connector.

Tips and warnings

  • Ensure that while work is being carried out, other members of the household do not use any appliances or bathroom fittings that are above the part of the pipe that you are planning to cut into.

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