Encapsulation collars (shaped DUOFIT)

Multi range encapsulation collars to repair items having a bigger outside diameter than the under pressure pipeline.

  • Body and compression followers: carbon steel
  • Anti-corrosion coating: RILSAN NYLON 11©
  • Bolts, nuts, washers: steel with anti-corrosion coating (alternatively: stainless steel A2/A4)
  • Sealing gaskets EPDM or NBR


  • Smaller excavations
  • No supply interruption
  • No mains emptying
  • No pipe cutting
  • Economy low costs for installations
  • Definitive repair
  • Wide range
  • Suitable for pipes of any material
  • Choice of body length
  • Resistant to corrosion
  • Ovality and angular deflection compensation
  • Definitive repair
  • Tailor  made solutions available
  • Elbow shapes available

Asbestos concrete
Ductile and cast iron