General Technical Approval of Deutsches Institut für Bautechnik  No. Z-42.3-375 Güteschutz Kanalbau e.V.

Gütezeichen Nr. S27.24 US. Patent Pending

The epros® DrainLCR-S system is used to repair and permanently seal main/lateral interfaces and connections up to 500 mm from the main line down into the lateral. The system can use either an LCR-S hat profile or an LCR-S liner. The main-to-lateral interface in the main pipe is sealed only by the rim of the LCR-S hat profile, while the LCR-S liner in the main pipe is designed as a short liner.

Benefits:

Reliable to install:
1. Inversion is not possible until positive engagement of the pathfinder.
2. The signal will not sound until complete inversion.

Technical advance:
Only the inversion process allows pipe bends and offset joints to be relined.

Meets practical needs:
Successful repairs are possible with little equipment needs only, even in the presence of groundwater.

Price advantage:
Low investment cost, because you need to buy just the packers actually required.

Practical:
The low-weight mobile unit with low space requirements can be placed even in a small car.

Flexible:
It is also possible to use air push rods or a carriage.

Accessibility:
The LCR packers can be folded as required inside the manhole.

User-friendly equipment:
The LCR packers can be converted to other sizes as required.

 

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 epros® 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 (eprosSteamGen 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

Benefits

Meets practical needs:
Successful repairs with little equipment needs only, even in the presence of bends.

Price advantage:
Low investment cost, because you need to buy just the packers actually required.

Practical:
The low-weight mobile unit with low space requirements can be placed even in a small car.

Flexibility:
The job can be done with air push rods; no carriage needed.

Accessibility:
The LCR-B packers can be folded as required.

No risk of fire:
The resin system used for the liner system is self-extinguishing.