New Method for the Lateral Connection Repair of Underground House Sewers and Downpipes in Buildings
Main Pipe DN 100 – DN 200
Lateral DN 50 – DN 200 (at 30° – 90°)
Trenchless repairs of lateral connections are rather tricky jobs to do. Many commonly available packer systems cannot cope with pipes having diameters of rarely more than DN 100 – and sometimes even additional pipe bends. Until the recent past, no repair system in the DN 100 to DN 150 range had been available for sealing junctions of down pipes, house sewers and lateral pipes, i.e. pipe sizes of DN 50 to DN 150.
With LCR-B (“B” stands for building), Trelleborg managed for the first time ever to scale down to lateral and house sewer sizes the LCR-S method (“S” stands for sewer) known from main line rehabilitation, in which a packer is used to invert a fibreglass “hat” profile into the main/lateral interface. As an alternative to the specifically developed hat profile, it is also possible to use a liner of the appropriate size.
The LCR-B hat profile in the main pipe seals the interface between the two pipe systems with its rim only, whereas the LCR-B liner is designed as a short liner in the down pipe or house sewer. The standard lateral repair length is 300 mm – the new LCR-B packer model allows a maximum repair length of 1300 mm.
The LCR-B liner and hat material is suitable for steam curing and has high mechanical properties and very good sealing capabilities. In order to reduce the curing time, Trelleborg Pipe Seals is offering a steam generator (SteamGen V3).
Behaviour in bends
Depending on the actual host pipe run or on wrinkles formed in the installed liner:
45° for DN 100 main line
90° for DN 125 or larger main line
Wall thickness of 2 to 3 mm
Please contact us for price & availability.