FP/BFP Hazardous Area Immersion Heaters

The FP/BFP type Flameproof electric heaters comprise a large range of process immersion heaters, certified for use in a Zone 1 or Class I, Div 1 Hazardous Area, custom built to meet client specifications.


  • Up to 1000 kW (larger ratings achieved by a combination of enclosures)
  • ATEX approved Ex II 2 G/D
  • Certified Ex’d’, Zone 1, Gas Group II A, B, C
  • Certified Class l, Div 1, Gas Group A, B, C, D
  • Terminal box is certified weatherproof to IP66/67 or NEMA 7
  • Temperature classes T1-T6 (T450°C – T85°C)
  • Elements are specially sealed to prevent moisture ingress
  • Elements are individually replaceable on site without the need for special tools
  • Withdrawable type elements available to facilitate replacement without draining the vessel
  • Suitable and certified for use in high ambient temperatures e.g. Middle East
  • Anti-condensation heaters fitted if required
  • Elements are manufactured from 80/20 nickel chrome resistance wire with high purity compacted magnesium oxide powder sheathed within corrosion/erosion resistant tube, e.g.

    • Incoloy 800/825
    • Inconel 600/625
    • Titanium
    • Stainless steel 316/316L
    • Stainless steel 321
    • Monel