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Piping Systems & Welding

Closure Coupling

For Duo-Pro® Double Wall Environment Piping Systems

Alternative method of installing Duo-Pro® double contained piping systems. The coupling slips over the outside diameter of the pipe, allowing the carrier to be welded and pressure tested before sealing the containment.

Ideal Applications Include:

For use with Duo-Pro® double containment piping systems.

Supply Range

Size Range:

3" (90mm) - 8" (200mm)


Pro150, Pro45


Polypropylene Electrofusion

  • Ideal for DuoPro staggered welding
  • Dis-similar material U
  • Independent carrier pressure test
  • Conforms to ASME B31.3
  • Slips over SDR pipe
  • Use existing welding equipment


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