Trenchless Technology

Primus Line

Primus Line is a trenchless technology designed by R├Ądlinger 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.

Benefits

  • Installation lengths up to 6,500 feet
  • Able to negotiate bends up to 30 degrees
  • Ultra-high strength liner design
  • No corrosion of Primus Line
  • Fast return-to-service
  • Increases flow capacity
  • Designed for transmission-pressure pipelines
  • Sustainability due to use of existing infrastructure
  • 50-year design life

Primus Line has short rehabilitation times and rapid recommissioning and, therefore, represents not only an inexpensive alternative to open rehabilitation, but also a high-quality method of the renewal of pressure pipelines.

Read more:

http://www.primusline.com/en/company/raedlinger-group/

Download Primus Line, PDF English

Technical specifications

Norminal Sizes 150-500 DN
Operating pressure max (water)
depends on diamater
55
76
bar
bar
Single-layer fabric
Double-layer fabric
Operating pressure max (gas)
depends on diamater
34
46
bar
bar
Single-layer fabric
Double-layer fabric
Burst pressure max
depends on diameter
137
190
bar
bar
Single-layer fabric
Double-layer fabric
Wall thickness 6,0
8,0
mm
mm
Single-layer fabric
Double-layer fabric
Weight (from / to)
depends on diameter
2,8 - 8,5
4,0 - 8,7
kg/m
kg/m
Single-layer fabric
Double-layer fabric
Abrasion resistance (DIN 53516) 10,5 mm3
Insertion length max 2.500 m
Hose length per drum max
depends on dimater
Up to 6.000 m
Bendability up to 45 degree
Bend radius 5 D
Continuous operation temperature up to 50 ° C