Specialist dual-contained pipework

Guardian is a unique dual-contained system that incorporates a patented Centra-Lok™ system, which provides a solid fixed fitting, offering a true point of difference from other dual-contained systems on the market.​

​Manufactured in PVC-U material, Guardian is ideal for water and waste treatment applications as it allows the safe transportation of different fluids and some chemical concentrates without fear of corrosion and environmental pollution.





System overview

  • Patented Centra-Lok™ system to hold fitting in place
  • Solvent-weld jointing for both inner and outer pipe
  • Extremely easy to install
  • Visual or automated leak detection system available

Guardian range

Suitable for a wide variety of applications including waste water treatment, chemical processing and industrial processes, Guardian is a complete system of pipes, fittings and valves providing a full dual-contained pipework solution.

  • Sizes ½#2" up to 8#12"
  • 15 bar pressure rating (Class E)
  • Suitable for temperatures +5 to +60ºC


Guardian range

Valves and accessories


Industrial processes range guide
9.4 MB, PDF get_app
Guardian specification guide
2.1 MB, PDF get_app
Specification guides
Chemical processing
980.1 KB, PDF get_app
Application schematics
Waste & water treatment
1.4 MB, PDF get_app
Application schematics
Factory services
1.4 MB, PDF get_app
Application schematics
Food and beverage process
859.6 KB, PDF get_app
Application schematics
Power generation
1.3 MB, PDF get_app
Application schematics




Get in touch with an expert

Tim Sandberg
Product Manager