: Mainline: Inversion
Key Features
LMK's Performance Liner® Sectional process renews pipes from 6 to 42 inches in diameter in continuous lengths up to 50 feet. The liner can be inverted anywhere in the pipe with no trimming or cutting. The result is a structural, root proof, water-tight seal. Performance Liner® Sectional conforms 100% to ASTM F2599-09. Gasket Sealing Technology is used at the terminating points of the liner embedding hydrophilic O-rings between the liner and host pipe to ensure a water-tight seal. LMK bands are patented. Compressible material is incorporated at the upstream and downstream ends of the liner for a smooth tapered transition to the old host pipe. During the positioning process, there is no resin loss because the liner is fully contained in the launch hose so resin contacts the pipe only at the point of repair and migrates into fractures and open joints creating a mechanical lock. Unlike other less precise systems, air pressure is never dropped allowing jarred sections of pipe to collapse onto the liner and cause further damage and a potential dig. Other 2-step inversion systems also have an uneven resin distribution from the crown to the invert of the pipe. Performance Liner® Sectional Repairs are a one-step, long-term, true CIPP solution.
- Line through a cleanout upstream or downstream
- Inverted anywhere in the pipe
- ISGL™ Liner Zero Stretch
- Superknit negotiates multiple 90° bends
Compressible Material on Lateral Tubes
A strip of Compressible Material which compresses to nearly a zero thickness is used to form an engineered taper by which provides a smooth transition for maximum flow rate.
Hydrophilic O-Rings on Lateral Tube
A hydrophilic O-ring is incorporated at the upstream and downstream ends of the lateral liner tube. This swelling gasket is embedded between the liner and the 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 liner and is compatible with all types of piping. Compression gaskets have been used extensively in bell and spigot pipe joining applications for many years and are now available for cured-in-place lateral lining.
Continuous Lateral Tube
The Performanceliner® cured in-place lateral lining consists of a one- piece continuous lining. The liner is resin saturated all at the same time and cured all at the same time 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 Lateral Liner incorporates a structural full-circle tube having proper wall thickness for each pipe diameter.