Concentric Cascade Systems


  • The concentric cascade system is meant for the collective evacuation of exhaust gases and supply of combustion air of several boilers which are installed in cascade.
  • The pipes are made of PP.
  • The system has a H1 tightness class which enables operation with positive pressure. This reduces the required diameters compared to a negative pressure system.
  • The PP pipes can be easily cut to adjust the length.


  • Cascade installations can be, theoretically, combined with several flue systems. The chosen system picture is a typical application and is meant as example.

Features and benefits

  • Optimal flexibility combined with maximum robustness
  • Chimney calculations possible on request
  • Lightweight; easy to handle and easy to shorten
  • Plastic materials; less risk of injuries as result of sharp edges
  • Non-return valves available

Quick Facts