LMK T-Liner - Gasket-Sealing
From Lateral Pipe Repair
LMK’s T-Liner is a one-piece homogenous main and lateral CIPP connection liner. T-Liner has a uniform wall thickness and incorporates compressible material at the upstream and downstream ends creating a smooth tapered transition to the host pipe. Both the mainline and lateral sections are formed as a structural cylinder that renews 18-inches and 360-degrees of the mainline and extends up the lateral pipe as one continuous lining. The T-Liner incorporates gasket-sealing technology that surrounds the main liner and the upper end of the lateral liner. These hydrophilic compression O-rings are embedded between the host pipe and the T-Liner providing a verifiable non-leaking connection (VNLC) with all pipe types including polyethylene. A permanent Lateral Identification Indicia is placed on the mainline lining which includes the building address and other pertinent information relating to raw materials used to form this one-piece structural T-Liner.
The end result is a one-piece, structural, new con...
The end result is a one-piece, structural, new continuous Main/Lateral CIPP that eliminates root intrusion and infiltration, and is engineered to resist compressive hoop stress. Every T-Liner is permanently marked with a 'Lateral Identification' as described in the ASTM F2561- 06 Standard Practice for Rehabilitation of a Sewer Service Lateral and its Connection to the Main Using a One-Piece Main and Lateral Cured in-Place Pipe.
Features:
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 by 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 T-Liner consists of a one- piece continuous lining from the mainline tube to the 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. When a short connection liner is installed and later an overlapping lateral lining is installed, a cold joint is produced. Those two linings are not resin saturated at the same time, they are not cured at the same time and therefore they do not provide a homogeneous lining. The average length of a T-Liner is 45-feet with many successful installations that exceed 100 linear feet. However, the longest T-Liner installed to date is 200-feet with no digging whatsoever.
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 T-Liner incorporates a structural full-circle main liner tube having proper wall thickness for each pipe diameter.
Lateral Indicia
The mainline portion of a T-Liner 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.
Hydrophylic O-Rings on Mainline Tube
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 technology is 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 by which provides a smooth transition for maximum flow rate.
The most precise long-term engineered cipp solutio...
The most precise long-term engineered cipp solution for defective laterals and the main/lateral connection.
T-Liner by LMK Technologies is the trenchless cured in-place pipe system being utilized in collection systems throughout the world for renewing the entire lateral and the main to lateral connection without the need of conventional excavation. With its Compression Gasket Sealing Technology and more than 50,000 successful installations, LMK’s technology has been proven time and time again to be the most effective, most non-disruptive, long lasting lateral renewal system.
Strategic Solutions
LMK’S T-LINER is engineered and constructed as a one-piece homogeneous main and lateral lining. The T-liner incorporates compressible material that forms a smooth engineered taper at all transition ends. Every T-Liner passes a stringent 27 point quality assurance program.
LMK’S T-LINER conforms to ASTM F2561-06 and is constructed in a cylindrical design making it a true Structural, Stand Alone “Main and Lateral” CIPP Lining. Since both the main and lateral are tubular, everyday engineering design calculations are applicable using flexural modulus, flexural strength, liner thickness, soil modulus, depth and other commonly used design factors. The T-Liner provides a VNLC (verifiable non-leaking connection) by use of expanding O-rings embedded between the host pipe and the liner. This compression gasket seal is the same type of seal used for direct burry pipe and is compatible to seal with all types of piping including polyethylene and olefin based coatings that are common on CIPP linings from manhole to manhole. Other less precise lateral connection systems try to convince you their liner will bond to the pipe for 50 years, and will withstand hydrostatic pressures.
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