Polypropylene fittings are much more expensive than the pipes themselves. Therefore, the ability to reuse them when reworking a pipeline provides significant savings. To do this, you need to make a special reamer to drill out the soldered pipe from the fitting. After this, it can be reused without reducing the quality of the connection in any way.
Materials:
- Annular cutter 19 mm or 24 mm;
- steel round timber 16-20 mm for turning.
The process of making a reamer and restoring a PP fitting
To make a device for removing a pipe with a diameter of 20 mm, you will need a 19 mm ring cutter, and for 25 mm pipes, respectively, 24 mm. It will allow you to drill a hole in the fitting to the original diameter, so that you can reuse it later.
To align the cutter when drilling, grind a guide on a lathe. It is installed in a cutter instead of a center drill. The guide must fit into the soldered pipe without a gap to prevent the reamer from dangling.For a fitting for a 20 mm pipe, the guide is made with a diameter of 16 mm, and for a 25 mm pipe - 20 mm.
The guide should be removable. There may be an influx of plastic in the depths of the fittings, so when it hits, 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 advisable that the device be equipped with a screw to connect the halves. Without it, the guide may fall out and fall into the depth of the fitting.
To use a 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 hole using a guide. Then we drill it to the depth required for soldering. If the guide gets stuck as you move, it should be removed.
As a result, the restored fitting can be reused.
High-quality and durable drills on AliExpress at a discount - http://alii.pub/5zwmxz
