CIPP Materials and Installation
Delivering Sanitary and Storm Sewer 'Pipe-Within-a-Pipe' Seamlessly
SAK Construction utilizes the highest-quality manufactured polyester felt tubes and CIPP resins available in the industry to produce cured-in-place pipe for sanitary sewers and storm sewers. Among our primary suppliers is Applied Felts, which has produced CIPP tube that has been used by more than 300 contractors operating in over 30 countries for more than two decades. SAK Construction is certified by Applied Felts and installs cured-in-place pipe in accordance with ASTM F1216 for inversion and curing.
During the wet-out process, the felt tube, coated on the outside with a continuous impermeable layer of polyurethane, is resin-impregnated, fully saturating the felt so that no voids or pockets of air remain in the tube. The wet-out liner is inverted into the existing pipe using a hydrostatic head or pressurized air. As a result, the resin-saturated side of the liner interfaces with the wall of the existing pipe. The reverse side of the liner—which is coated with polyurethane—thus becomes a smooth interior surface to effectively carry the rehabilitated pipeline’s flow.
Once the liner is in place throughout the entire length of the pipeline that is being repaired, we inject hot water or steam to cure the liner resin. When properly cured, this provides a continuous, jointless “pipe-within-a-pipe” and restores structural integrity to the damaged pipe. The final stage is to reinstate service or lateral connections to the newly repaired pipe. This is accomplished internally using a sophisticated robotic camera and cutter system. After the connections are reopened, live flow can be returned to the sewer line.
Aqua-Pipe® Renews Water Mains Trenchlessly
Aqua-Pipe is a stand-alone structural liner, designed and manufactured to be cured inside 6-inch to 16-inch water mains, eliminating the need to use the more costly and disruptive "dig-and-replace" method of pipeline rehabilitation. Aqua-Pipe differs from liners used in alternative types of cured-in-place pipe (CIPP) technology in that it was developed specifically for use in drinking water distribution systems, rather than in sewer and sanitary pipes. As a proven water-main rehabilitation trenchless technology, Aqua-Pipe is in great demand nationwide.
Aqua-Pipe is a composite of a woven textile jacked with epoxy and an inside polymeric membrane for water tightness. This trenchless technology produces low emissions of carbon dioxide when compared to traditional construction methods.
A Class IV (AWWA M28 Manual) structural liner, Aqua-Pipe was first developed by Sanexen a decade ago and has been successfully installed in more than 1.2 million feet of water mains in North America. Aqua-Pipe meets all drinking water requirements and is certified by the National Sanitation Foundation to NSF/ANSI 61.