LFS Junction Liner

By: Liquiforce  09-12-2011

The junction between the mainline and lateral pipes has been identified as the weakest point in the sewer system. These junctions are often found to be structurally unsound. Our system will allow for any combination of mainlines from 8-24 inches and lateral lines from 4-8 inches. The lateral portion of the liner is inverted up the lateral from the mainline sewer to lengths in excess of 100 feet.

The LFS Junction Liner employs many quality control features, such as ASTM F1216 design, vacuum impregnation, inversion installation, and protective carrying devices. These features ensure product uniformity, strength, durability and affordability for the end user. There is no joining of two separate liners required. The LFS junction Liner is inserted through the mainline pipe and once positioned, the liner is then inverted up the existing lateral. The end result is a one-piece, structurally sound repair of the connection and lateral.

Both the mainline and lateral portions of the liner are installed simultaneously as a one piece LFS Junction Liner, resulting in a smooth interface of the lateral/main connection. The new liner ensures high quality and durability that is impervious to infiltration and root intrusion.

Other products and services from Liquiforce


LFS Lateral Liner

With the use of our unique launching process we are able to invert a liner up the service lateral from within the mainline sewer. This cost saving process eliminates the need for open cut replacement of laterals, road, curbs, gutters and sidewalks. The initial video inspection can be performed from the mainline sewer if a clean out is not present. Our lateral liners range in diameter from 4 inches to 8 inches in excess of 100 feet.


LFS Liner

Final inspection is performed to document the proper opening of the service laterals and the integrity of the new seamless LFS liner. Our process involves the installation of a resin impregnated flexible tube that takes the shape of the original conduit. Utilizing time proven design principals, we are able to provide full, trenchless, structural rehabilitation systems.


Prep From The Main

Liqui-Force has designed new systems that allow all of the lateral cleaning and installation to take place from access at the manhole, with no need for a cleanout or hole in the lawns of homes or businesses. These two operations will provide a service quality rating and allow for correct sizing of the liners as well as provide for the changes of size made through transitions.