: Lateral: Lateral Lining: Brochure
Back to Key FeaturesPerformance Liner® Trenchless CIPP Lateral Solutions
LMK Technologies® has been awarded 3 US Patents (No. 7,343,937, No. 7,448,413, No. 7,588,055)
for CIPP Lateral Lining through a cleanout with no digging or cutting required. The lining is
typically positioned within a translucent bladder (or connected to a positioning hose) and vacuum
impregnated. Next, the liner/bladder assembly is inverted through the cleanout and directed upstream
or downstream by use of a guide shoe.
Only the bladder is located within the cleanout since the liner does not
begin to invert until it is positioned within the horizontal lateral pipe.
The process includes the use of a camera port which allows a lateral
push camera to be inserted inside the translucent bladder, providing
visual verification of the liner placement prior to curing.
The liner can be cured at ambient temperatures or accelerated with
steam. The liner can be installed where the inflation pressure is never
compromised; because the liner remains inflated from the time of
inversion throughout the curing process. This is an important feature
as the pressure used to invert the liner tube may move broken pieces
of pipe. If inflation pressure was removed the broken pieces of pipe could
fall on the deflated liner. Inflation, deflation and subsequent re-inflation
could result in a defective liner which would result in required excavation
to repair the defective liner. The LMK process eliminates concern.
When cured, the bladder is re-inverted and removed from the pipe.
There is no cutting required in the liner because the liner is started
below the test tee and past the side connections. Further, the liner is
open ended at the main location so there is no cutting at the upstream
end or the downstream end.
A similar application is presented from an outside cleanout. In this case
again the distance from the clean-out cap to a determined location is
measured using a push camera with markings. 
The liner and bladder are assembled, resin saturation is performed and the liner is inverted in-place. The
key is to begin the liner downstream or upstream of the cleanout vertical
riser so no cutting is necessary. Not only does cutting require time and
money, it is also very difficult to achieve a full circle, smooth surface cut,
especially from a 4-inch vertical pipe that dead heads into the lateral pipe.
Previously, lateral linings were inserted from an excavation near the property line or near the house foundation. Excavation pits are messy and represent higher cost, restoration costs, more risk and take more time to repair the defective lateral pipe. This method for lining through a cleanout with no cutting required eliminates the need for an excavation pit, reduces cost and additional laterals can be renewed in a day. The homeowner is positively happier because their yard is not torn apart and their sewer has been renewed in just a few hours.
The system allows for installation from one access point, typically from an outside cleanout or an inside cleanout that is normally located in the basement. The installer can determine the placement of the lining by where they position the liner within the bladder. Scenario (1) describes how the system could work from a basement and save a lot of extra time and money.
Example: Assume there is a 4-inch cast iron stack with a test tee clean-out.
The stack is 20 feet from the foundation and the pipe under the floor is in
good condition and contains several side connections. The pipe transitions to
6 inch clay 5 feet past the house foundation. The installer wants to start the
liner just past the side connections, yet needs the liner to start in the 4-inch
pipe and transition to the 6-inch pipe. The 6-inch line continues 60 feet to the
city main. The installer would simply measure from the test tee to the main pipe,
mark the camera cable and pull back to the location where the liner is to start in
the 4-inch pipe and a second mark is made on the camera cable.
The camera cable is laid on the ground, and the distance from camera head to the mark closest
to the camera head is the length of the liner. The distance from the camera head to the
second mark, furthest from the camera head is the length of the bladder. The liner is
measured, cut and inserted into the bladder. The liner is then temporarily connected
to the bladder. The liner is resin saturated inside of the translucent bladder which allows
for visual verification of the resin saturation process assisted by pulling a vacuum on the
assembly. Next, the liner/bladder assembly is loaded into a mobile launching vessel and the
guide shoe is inserted into the test tee positioned downstream.
The launching vessel is positioned with the opening of the test tee and inversion air is introduced causing the bladder to invert. The bladder first encounters the guide shoe and is directed towards the downstream. The bladder continues to invert until it reaches the location where the liner begins. The bladder which is temporarily attached to the liner pulls the liner over the bladder and now both the liner and the bladder are inverting. When the liner has fully been deployed, the bladder continues to invert a short distance so it extends beyond the liner.
The liner can virtually begin anywhere in a pipe and applications are not
limited to lateral pipes. Another application for this new technology
occurs when a mainline pipe has only one manhole access.
Typically CIPP Sectional liners require an upstream and downstream manhole for pulling
the liner into place. This new patented method for inverting a liner anywhere in a pipe allows a
bladder to be inverted into the pipe to a desired location. Then remotely causing the liner to start
inverting at this pre-determined location which is exactly where the liner is to be located.
Another aspect of this new technology includes the use of a camera port. The camera port is a pressurized port where a lateral push camera is inserted in the interior of the translucent bladder. The camera provides visual verification of the liner placement ensuring that the liner started in the proper location and that the liner is fully inverted, not protruding into the municipal main pipe.