Flame arrester (ARF)


Following EN 746-2 standard, it's necessary to install a flame arrester by line on the pipes in air / gas premix; as close as possible to burners.

The ARF we propose (PROTEGO-FA / CNT) are deflagration-proof type. They will be installed at a distance ≤ 50 times Ø of the mixing piping.


In the case where the implantation would require to exceed this distance by 50 times the Ø, it will be necessary to install an antidetonation ARF (more expensive and more pressure losses.


Choice between deflagration proof or detonation proof

Deflagration proof


  • Composed with fewer flame arresters
  • Cheaper
  • Less load losses
  • Slower fouling
  • Quick-access inspection door



  • Its implantation is limited to a maximum distance (50x the ØDN1)

Detonation proof


  • No imposed distance between its location and the injector ramp.


  • Device made up with more flame arresting discs
  • More expensive
  • More load losses
  • Faster fouling
  • Maintenance requires complete disassembly


Revision of flame arresters (old models)

Since 2014, we no longer manufacture this model and have replaced it with the one described above.

Of course, we ensure the maintenance and/or the repair of your old flame arresters



The revision includes:

  • Cleaning
  • Analysis
  • Revision (Replacement of internal stainless steel parts if necessary)
  • Calibration of the internal safety components.
  • Tests in the workshop
  • Maintenance report
  • The painting
  • A new 12 months warranty

User instructions