Heyco Conduit, Tubing & Fittings Flexicon Technical Specifications

Performance of Corrugated Nylon Conduit System and Low Fire Hazard (LFH)

Low Fire Hazard (LFH) conduit systems are becoming an increasing part of the specifications in many applications.

Low Fire Hazard systems are required to protect personnel and property in the event of a fire and may be demanded by specifiers, occupiers, fire services or even insurers. Flexicon nylon conduit systems define a Low Fire Hazard product as having all of the following properties:

Test Used

Flexicon PA6 Conduit (Standard Weight – FPAS)
  • Self Extinguishing
  • Flame Retardant – UL 94V-2
  • Low smoke to BS6853 – Maximum opacity Ao = 0.02
  • Low toxicity – toxicity index to NES713 = 10
Flexicon PA12 Conduit (Standard Weight – FPI)
  • Self Extinguishing
  • Flame Retardant – LOl = 22%
  • Low smoke to BS6853 – Maximum opacity A0 = 0.05
  • Low toxicity – toxicity index to BS6853, Annex B = 1.32
  • Ignition and Fume Rating to – NFF16-10/2 = I4F1
  • Halogen, Sulphur, and Phosphorus Free
Flexicon PA6/6 Fittings
(NPT, PG, or Metric threads–IP 66)
  • Self Extinguishing
  • Flame Retardant – UL 94V-2
  • Low smoke to BS6853 – Maximum opacity Ao = 0.03
  • Low toxicity – toxicity index to NES713 = 10