ATEX, derived from ‘ATmosphere EXplosible’ was extended from electrical equipment to cover mechanical equipment such as fans and came into force under Directive 94/9/EC on 01 July 2003.

The “zones” (according to RL 1999/92/EG) represent work areas in which an explosive atmosphere can occur. Depending on the frequency and the duration of the explosive atmosphere, ATEX defines different zones and corresponding categories:

  • Continuously or for longer periods of time. Zone 0 (=G) und 20 (=D) Equipment category 1
  • Occur occasionally. Zone 1 (=G) und 21 (=D) Equipment category (1 or) 2
  • Normally not likely to occur, or only for short periods of time. Zone 2 (=G) und 22 (=D) Equipment category (1, 2 or) 3
  • Only equipment, components and protective devices may be placed on the market which conform to the provisions of ATEX directive 94/9/EG.

We offer from the market leader, IVACO Srl’s range

Side channel blowers and exhausters, BIOGAS ATEX II 2G Eexd IIB T3

Vertical layout, all components in die-cast aluminium, with liquid gasket and double seal ring, a lantern for direct coupling and tap for condensate. Atex certified flexible coupling. Anti-sparkling guard. Asynchronous electric motor ATEX CE CAT II 2G Eexd IIB T4 IP55 cl. “F” with PTC. Base plate in carbon steel.


Side channel blowers and exhausters ATEX II 2GD for industrial gas

Gas-tight construction, horizontal or vertical layout, Atex certified flexible coupling, anti-sparkling guard, twin bearings, Viton seal ring. Asynchronous electric motor ATEX CE CAT II 2G Eexd IIB T4 IP55 cl. ”F” with PTC.


Side channel blowers and exhausters  Monoblock type ATEX II 3GD – zone 21 and 22.

All components in die-cast aluminium, monoblock construction, horizontal or vertical layout. Electric motor ATEX CE II 3GD Ex nA T4.

IVACO Srl has designed and subjected all ATEX products to a rigorous ignition hazard assessment to determine correct design features (including a selection of compatible materials) and in conjunction with an authoritative standard.

All air blowers are subjected to a running test and some our fans are given an extended test run under closed damper conditions to verify & record maximum surface temperatures.

The actual features on our vacuum pumps and air blowers (eg. gas tight etc) will vary according to Zone, gas/dust type, ignition temperature and whether the zone is inside and/or out, open inlet or fully ducted. IVACO Srl has a range of ATEX fan grades to cover all eventualities which will be carefully selected by our experienced technical sales team. Please contact us to discuss this if you are unsure and we will guide you through your requirements. We will supply an ATEX questionnaire to assist you with this. Please note however that the d.etermination of the actual zone has to be specified by the customer as this must be based on a site hazard assessment