The project begins with mapping the internal plumbing system and camera inspection of drain and sewer lines. A plan is implemented to minimize disruption and afford the most efficient timeline for work completion. The piping system is inspected for integrity and spot repairs are made to excessively worn joints and fittings. Temporary bypass water piping may be installed. Depending on the lining method to be used, pipes may be drained and/or air-dried. After testing for leaks, the pipes are prepared for cleaning.

 

 

The next step involves removing roots and calcite in order to return the pipe to its original functioning diameter. Removal methods may include jetting the lines or the use of pneumatic tools such as a scorpion cutter. Cast pipe may require additional preparation if there is significant corrosion or missing sections of pipe.

 

 

Nu Flow’s patented trenchless lining system involves double-entry access to pull an epoxy-saturated felt liner with an internal bladder inside host pipe. The bladder is inflated for curing in place and is later removed, leaving in its place a smooth, jointless new pipe inside the host pipe. This lining method provides the ability to line multiple 45° and 90° angles, as well as the option of lining specific sections of pipe without lining the entire length.

 

 

The liner is trimmed, and re-fitted to connect the lined service to the system. A final leak test and camera inspection confirm structural integrity. Water quality, volume, and flow tests confirm system functionality.