Process Heating Services Ltd.

For Industrial Electric Heaters

Atex Immersion Heaters

ATEX heaters
ATEX heaters

ATEX Standards

There are two (EU) standards for equipment that needs to be able to work in hazardous (potentially explosive) environments. Such equipment needs to be flame combustion and explosion-proof: an Equipment Directive and there’s a Use Directive.

Equipment Directive

This is labelled 94/9/EC and is concerned with manufacture and sale of such equipment.

Use Directive

This is labelled 1999/92/EC and is concerned with categorizing hazardous areas and with choosing, installing, maintaining, and inspecting the equipment.

ATEX-EX Flanged Heaters

If the fluids used in your process are non-corrosive to their construction materials [see our corrosion table], flanged heaters are perfect for installation in Areas with Explosion Hazard (Zone 1 and 2). We supply them with full ATEX-IECEx certification.

Typical applications include:

  1. fresh and sea water
  2. crude and synthetic oils
  3. air and process gases
  4. tank heating
  5. heating medium
  6. liquid-vapour separation
  7. glycol reboiling
  8. vapouriser for butane and propane
  10. regeneration of molecular filters

Technical features:

  • can be used to heat liquids and gases.
  • Carbon-steel or stainless steel certified electrical enclosure
  • flanges up to 48 inches to ANSI B 16.5 in various materials [see below]
  • connection housing protection levels: IP54, IP65, IP66, IP67
  • standard heating element diameters: 8.5, 12.5 and 16mm
  • carbon steel (Fe 35.2), stainless steel 304 (L), 316 (L) or 321, Incoloy 800 or 825, Inconel 600 or 625, Hastelloy, Monel, copper, etc.
  • can be immersed up to four meters
  • Power ratings up to 5000 kW

    • ATEX-EX Threaded Heaters

    Threaded immersion heaters for Explosion Hazardous Locations, Zone 1 and 2, groups IIA, IIB, and IIC, T1-T6 temperature classes. ATEX II 2G Ex d IIC T1-T6 certification, according to EN 60079-0 / 60079-1, and IECEx Ex d IIC T1-T6, according to IEC 60079-0 / 60079-1.

    Our threaded immersion heaters comprise tubular elements welded to a screw cap, which can be screwed to a threaded inlet placed in the tank wall.

    The electric heating elements are manufactured from selected Ni Cr 80/20 wire, placed in the center of a metal tube, with high-quality magnesium oxide (MgO) insulation compacted by drawing to cold. The sheath of the elements is generally made of one of the following materials: carbon steel, 304 (L), 316 (L) or 321 stainless steel, Incoloy 800 or 825, Inconel 600, 625, titanium, copper, Monel, or other materials available.

    The elements are bonded by welding or brazing to a threaded screw cap, available in a variety of materials for different element sheath types and applications. The screw cap can have BSP, NPT or ISO threads. Special threads and materials are available on request. The heaters can be equipped with a control thermostat and/or a manual reset safety thermostat.