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Jun 7, 2022
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Restoration of PP fittings with homemade reamer

Polypropylene fittings are much more expensive than the pipes themselves. Therefore, the ability to reuse them when reworking the pipeline provides significant savings. To do this, you need to make a special reamer in order to drill a soldered pipe from the fitting. After that, it can be reused without reducing the quality of the connection.

Restoration of PP fittings with homemade reamer

Materials:

  • Annular cutter 19 mm or 24 mm;
  • steel round timber 16-20 mm for turning.

The process of manufacturing a reamer and restoring a PP fitting

For the manufacture of a device for removing a pipe with a diameter of 20 mm, an annular cutter of 19 mm is required, and for pipes of 25 mm, respectively, 24 mm. It will allow you to drill a hole in the fitting to its original diameter, in order to reapply it later.

Restoration of PP fittings with homemade reamer

To align the cutter when drilling, grind a guide on a lathe. It is installed in the cutter instead of the center drill. The guide should enter the soldered pipe without a gap so as not to allow the reamer to hang out. For a fitting for a 20 mm pipe, the guide is made with a diameter of 16 mm, and for the 25th – 20 mm.

Restoration of PP fittings with homemade reamer

The guide should be removable. There may be an influx of plastic in the depth of the fittings, so when it rests, the reamer will not be able to go further. By removing the guide, you can evenly drill an already started hole without it. It is desirable that the device be equipped with a screw for connecting the halves. Without it, the guide may fall out and fall into the depth of the fitting.

Restoration of PP fittings with homemade reamer

To use the reamer, you will need to cut the pipe flush with the fitting. After that, the tool, clamped in a drill or screwdriver, is inserted into the guide into the hole. Then we drill it to the desired depth for soldering. If the guide rests as it advances, it should be removed.

Restoration of PP fittings with homemade reamer

As a result, the restored fitting can be reused.

Restoration of PP fittings with homemade reamer

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