Primus Line - Flexible Multi-layer Pipe Liner

Bendability

The liner of Primus Line^® can pass several pipe bends up to 90 degrees during installation. Its abrasion-resistant outer layer made of polyethylene (PE) or thermoplastic polyurethane (TPU) protects it reliably from abrasion. Even under these demanding operating conditions, the liner can still withstand at least 50 per cent of its nominal operating pressure.

Thanks to its fabric made of aramid fibres between inner and outer layer, the liner by Primus Line is statically self-supporting and accommodates the entire internal operating pressure by itself. When used for pipe rehabilitation (Primus Line^® Rehab), this means that the liner works as a new pressure pipe in the existing pipe during operation. An annular space remains between liner and host pipe, time-consuming gluing is not necessary. At the same time, this feature is the prerequisite for using the technology above-ground in open terrain which makes it completely independet of existing pipework (Primus Line^® Overland Piping).

The liner`s inner layer made of polyethylene (PE) or thermoplastic polyurethane (TPU) has a low friction coefficient of k = 0.028 mm. This is why Primus Line^® pipes have optimal flow characteristics.

This opens up further fields of application for Primus Line^®:

• Increase in flow velocity
• Increase in volume flow

Long seamless liner lengths make Primus Line^® a highly economic and safe solution. Space-saving transport is possible on sea and airfreight-friendly transport reels. Large continuous installation lengths reduce the required number of excavation pits and/or connections and thus ensure low impact on the environment.

• Seamless production: up to 4,500 metres
• Installation length in one piece: up to 2,500 metres

The liner system has a minimum service life of 50 years. The required extrapolation factors have been determined in a series of long-term tests based on DIN 16887 and ISO 9080.

For a particularly durable product, Primus Line relies on a sophisticated, tried and tested design and selected raw materials. The modern production facilities unite the resistant materials polyethylene (PE), aramid fibres and thermoplastic polyurethane (TPU) to a robust liner. In combination with the connectors made of cast iron or carbon steel, a pull-proof and durable connection between the liner and the existing line network is established. The flange models of the connectors are given a high-quality powder coating, which offers additional protection against corrosion.

The material requirements for water, gas and oil pipelines are demanding. Primus Line® even fulfills the high standards for drinking water and gas and has the corresponding certifications. Depending on the medium transported, the inner liner layer consists of polyethylene (PE) or thermoplastic polyurethane (TPU).

Media suitable for Primus Line®