LMK T-Liner Shorty - System for Main/Lateral CIPP Connection Liner
LMK’s T-Liner Shorty system is a one-piece, structural, stand-alone homogenous Main/Lateral CIPP connection liner that extends 3 feet up into the lateral pipe. Shorty was designed for municipalities that want the connection sealed and the most value without the cost or legal issues associated with installing a cleanout. Shorty is the trenchless, one-piece, Main/Lateral CIPP Solution that utilizes Gasket Sealing Technology and all of the other unique features as found in a standard T-Liner including vacuum impregnation, inversion installation, full-circle main liner construction, tapered ends for a smooth transition, lateral identification, and a long-term sealed impervious coating, all without the need for an outside cleanout.
Compressible Material on Mainline and Lateral Tubes
A strip of material which compresses to a standard specified thickness is used to form an engineered taper which provides a smooth transition for maximum flow rate.
Hydrophilic O-Rings on Lateral Tubes
A hydrophilic O-ring is incorporated at the upper most end of the lateral liner tube. This swelling gasket is embedded between the lateral liner tube and the lateral host pipe. This hydrophilic O-ring expands 3 to 5 times its original size in the presence of water. The full-circle compression gasket provides for a verifiable non-leaking connection and is compatible with all types of pipe and pipe lining materials. Compression gaskets have been used extensively in bell and spigot pipe joining applications for many years.
Continuous Lateral Tube
The lateral portion of a Shorty consists of a one-piece continuous lining that extends up the lateral pipe for 3-feet. The robotic positioning and installation is performed without the need for a cleanout. The entire Main & Lateral lining is resin saturated and cured all at the same time thus producing a one-piece homogenous cured in-place pipe.
Full Circle Design
Just like direct bury pipes, CIPP linings are designed from calculations based on physical properties of the CIPP, the depth of pipe being renewed, pipe diameter and soil/hydrostatic loading. The key element in the design calculation is the CIPP being formed as a “tube or cylinder.” LMK’s Shorty incorporates a structural full-circle main liner tube having proper wall thickness for each pipe diameter.
Lateral Indicia
The mainline portion of a Shorty is permanently marked with a Lateral Identification that includes the physical liner address. Other valuable information such as date of manufacture, the installation contractor and the manufacturing code which details pertinent control information about the materials, resin and catalyst used to build this cured in-place pipe. Through video inspection, owners may track valuable information from the indicia as needed such as which building is feeding a specific connection as well as quality control of the installed liner.
Hydrophilic O-Rings on Mainline Tubes
Bonding a CIPP connection liner is problematic and scientifically unsubstantiated due to Fats, Oils and Grease (F.O.G.) which are present in a sewer system; and olefin based coatings (PE or PP), materials well known to resist bonding or properties for adhesion. The solution is two hydrophilic O-rings positioned on each side of the lateral connection. These swelling gaskets are embedded between the mainline tube and the main host pipe; and expand 3 to 5 times their original size in the presence of water. The full-circle compression gaskets provide for a verifiable non-leaking connection and are compatible with all types of pipe and pipe lining materials. This is technology tried and true as compression gasket sealing has been used extensively in bell and spigot pipe joining applications for many years.
Compressible Material on Mainline and Lateral Tubes
A strip of material which compresses to a standard specified thickness is used to form an engineered taper which provides a smooth transition for maximum flow rate.