Partial Repairs


Partial Repair with Weco Rings

To repair a damaged, leaking socket of a pipe network we place internal WECO rings in the pipes. The WECO system means a special internal rubber cuff that is pressed against the inner wall of the host pipe by stainless steel rings. This technology provides a repair solution for large diameter gas, water, sewage and industrial pipe sockets up to a maximum diameter of 3m.


Partial Repair with Quick-Lock

For the repair of the sockets of smaller diameter pipes we offer the technology called QUICK-LOCK. The QUICK-LOCK profiles can be applied from 150 mm diameter to both pressure and gravity pipes.


Schwalm Robottechnology

The Schwalm robots have well proven their worth in performing the following tasks:

  • removal of protruding laterals
  • removal of roots
  • opening laterals after lining
  • rehabilitation of lateral connections with the so called 'hat' profile.
  • repair of sockets using resin impregnated liners


Shaft Renovation

Shafts installed with different purposes are important elements of gravity sewers. The tightness of these elements are of high importance. During the course of our renovation process we install a lining profile in the structure. These liners are either made of standard KGP PVC elements or custom made PE or GRP bases depending on the unique requirements.

The connection of the pipes entering and leaving these shafts is completely watertight. Connections are inside the pipes. This procedure is our own development and it is currently under patent procedure. The gap between the liner and the old pipe wall is either grouted or filled up.