ATEXAir

Pollutants & hazards

What we capture, and what we keep from exploding.

Every filter family in our catalogue is selected against the specific dust, fume or vapour your process generates. These are the hazard classes we most commonly handle.

Find your pollutant

5 results

Wood & cellulose dustSt1 – St2 · combustible

Wood & cellulose dust

Sawing, sanding, MDF and panel processing, high-volume, ignition-prone in trunk lines and silos.

WoodCelluloseSawdustMDFSanding
Kst
100 – 180 bar·m/s
Typical zone
Zone 20 / 21
Food powders (sugar, flour, milk)St1 – St2 · hygienic

Food powders (sugar, flour, milk)

Explosive when airborne, sugar and flour reach Kst up to 200 bar·m/s. Hygienic finishes and full purge cycles required.

SugarFlourMilk powderStarchHygienic
Kst
up to 200 bar·m/s
Typical zone
Zone 20 / 21
Aluminium & magnesium dustSt3 · high severity

Aluminium & magnesium dust

High-severity dust with very low minimum ignition energy, spark detection upstream of the filter is mandatory.

AluminiumMagnesiumSt3Spark detectionWet collection
Kst
≥ 300 bar·m/s
Typical zone
Zone 20, Cat. 1/3GD
Hybrid mixtures (pharma, coatings)Hybrid · powder + vapour

Hybrid mixtures (pharma, coatings)

Powder plus flammable solvent vapour, the most severe ATEX scenario. Internal Zone 20 with Zone 1 considerations.

APIsSolvent vapourPharmaCoatingsZone 1
Class
Cat. 1/3GD
Typical zone
Zone 20 / Zone 0
Welding & laser fumePM2.5 · sub-micron

Welding & laser fume

Sub-micron particulate with hot sparks, pleated cartridge media at high efficiency, with spark arrestors upstream.

WeldingLaser cuttingPM2.5Sub-micronCartridge
Particle
< 1 µm
Media
Pleated PTFE / nano

ATEX 2014/34/EU

ATEX zone classification, at a glance

Equipment selection follows zone, Zone 20 / 21 internally inside the collector and hopper, Zone 22 around the housing. We size category 1D, 2D and 3D equipment to your dossier.

  • Zone 20, explosive atmosphere present continuously or for long periods
  • Zone 21, likely to occur in normal operation occasionally
  • Zone 22, unlikely in normal operation, only for short periods
ATEX zone classification diagram for a dust collection system

Outcomes

What proper extraction prevents

ATEX-certified dust extraction is not paperwork, it is the engineering control that keeps a primary ignition from becoming a plant-wide event.

  • Primary dust explosions inside collectors and ducts
  • Secondary explosions from accumulated dust on beams & cable trays
  • Ignition propagation through trunk lines (back-flash)
  • Operator exposure to fine particulate (PM10 / PM2.5)
  • Non-compliance with ATEX 153 (workplace) and ATEX 114 (equipment)

Send us your Kst, Pmax and zoning, we'll respond with a sized system in 48 hours.

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