Primus Line

Primus Line is a trenchless technology designed by Rädlinger for the rehabilitation of medium and high-pressure pipelines for media including water, gas and oil. The technology is based on a semi-structural, flexible, ultra-high strength hose consisting of three layers:

• Inner layer: media specific; based on polyethylene (PE) or thermoplastic polyurethane (TPU)
• Middle layer: Seamless, woven Kevlar fabric (single or double layer design)
• Outer layer: protective, abrasion-resistant PE sheath to protect inner layers of the liner

Primus Line is produced in diameters from 6 inch to 20 inch. The installation process begins with shutdown, cleaning and CCTV inspection of the host pipe. Once the pipeline is properly prepared, the liner is folded and inserted into the host pipe. After connection fittings are attached at each end, the liner is then reverted using compressed air. The liner is reconnected to the existing pipeline utilizing specialty flanged or welded fitting. This liner can withstand pressures ranging from 145 psi up to 900 psi.