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PolyFold® Installation
 1. Excavations are required for installation and to remove any existing fittings.
2. The PE pipe selected for the project is welded into lengths suitable for installation; this can be the entire length, or shorter segments to accommodate available work space. If shorter segments are used, they will be fused together prior to entering the PolyFold® machine.
3. The welded pipe is pushed through the PolyFold® machine (see picture on left), which alters the shape of the pipe, resulting in a diameter reduction of up to 40% of the cross-sectional area. The shape is maintained by banding the folded pipe. (View Video)
4. The liner is inserted into the host pipe.
5. Once the liner is in place, it is cut to length, end fittings are attached and liner is pressurized to snap the bands.
6. Intermediate fittings are installed, and the completed line is pressure tested, disinfected and returned to service. Access points are backfilled and reinstated.
Click here to view a video of Step 3 - the folding process.
PolyFold® Installation, Click to view video.
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