A high-quality coated felt liner reinforced with glass fiber is impregnated with epoxy rein and then introduced into the existing pipe via existing shafts or smaller construction pits using using a water tower or reversion drum with air pressure or the pulling method.
The liner is kept under pressure and is cured using appropriate methods (heating the water or introducing steam). After curing the system provides a structural liner which is comparable to a new pipe.
Due to its design, the pipe liner provides statically self-supporting properties and resists high interior pressures and the general external load. As a result it is strutual supporting even without the old pipe ("stand-alone pipe").
Fields of application:
- Pressure pipes
- Drinking water, sewerage and industry applications
- Dimensions between 150 mm and 1,200 mm
- Circular profiles
- Suitable for all pipe materials
- Operational pressure PN 10 and PN 16
- Bends and curved section rehabilitation possible (fold occurrence, in particular in the event of position deviation, nominal dimensions tolerances, bending and deflection)
- Installation lengths: up to 250m pipe length (depending on nominal dimensions and system)
Advantages:
- Short construction time
- No pipe connections
- Very flexible in application
- Adhesion with the inner pipe wall possible but not required
- Insignificant cross-section reduction (twice the wall thickness of the liner pipe)
- Installation via existing shafts or small trenches is possible
- Connection opening and integration is possible from within and in accordance with customer needs
- The liner is resistant to internal pressure and is structural self-supporting
- The liner is hydraulically very smooth and resistant against aggressive waste water and mechanic
- exposure;
- Drinking water approval
Disadvantages:
- High-pressure cleaning is essential preparation work when adhesion is required
- Wastes, in particular substrate material and residual resin, must be disposed of correctly
- Pipe manufactured on site – compliance with high quality standards required
