Delfin DM AIREX 1/2D-2/2G INERT 19V
Pneumatic ATEX combi vacuum with INERT neutralisation bath -- 19 venturi, 44 L tank in AISI 304, Zone 21 dust + Zone 1 gas IIB
- Central suction at larger refineries with significant reactive dust
- Chemical plants with high gas flow and simultaneous reactive powder
- Larger ammunition facilities with Zone 1 gas + Zone 21 dust
- Process plants with high liquid bath demand (large collection cycles)
- Pharmaceutical factories with larger volumes of reactive powders in gas zones
- ATEX Directive 2014/34/EU -- II 1/2D Ex h IIIC T85°C Da/Db -- II 2/2G Ex h IIB T6 Gb/Gb
- EN 17348:2022 (harmonized March 2023)
- IEC 60335-2-69 (industrial vacuums)
Delfin DM AIREX 1/2D-2/2G INERT 19V
The Delfin DM AIREX 1/2D-2/2G INERT 19V is the larger DM variant of the double-certified AIREX INERT family: 44-litre neutralisation tank (37 L liquid + 7 L material) in AISI 304, 19 venturi units delivering 465 m³/h airflow at 5000 mmH₂O vacuum, and HEPA H14 final filtration over 26,000 cm². Double ATEX-certified (II 1/2D for dust and II 2/2G IIB for gas) with performance test to EN 17348:2022. Air consumption is 1530 nl/min at 6 bar. Used where the large liquid capacity and higher airflow are required -- typically central suction at larger refineries and chemical plants with simultaneous gas and dust risk.
Applications
- Central suction at larger refineries with significant reactive dust
- Chemical plants with high gas flow and simultaneous reactive powder
- Larger ammunition facilities with Zone 1 gas + Zone 21 dust
- Process plants with high liquid bath demand (large collection cycles)
- Pharmaceutical factories with larger volumes of reactive powders in gas zones
Technical specifications
| ATEX marking | II 1/2D Ex h IIIC T85°C Da/Db -- II 2/2G Ex h IIB T6 Gb/Gb |
|---|---|
| Internal / external zone | 20 / 21 |
| Motor type | 19 venturi-enheder, pneumatisk drift (trykluft) |
| Duty cycle | Continuous |
| Airflow | 465 m³/h |
| Vacuum | 490 mbar (5000 mmH₂O) |
| Container | 44 L |
| Sound pressure | 74 dB(A) |
| Filter class | H class |
| Filter type | HEPA H14 (EN 1822-5), 99,995 % MPPS, 26.000 cm² filterflade |
| Primary filter | Stjerne/taske polyester ANT M PTFE antistatisk, 30.000 cm², diameter 500 mm |
| Cleaning system | Manuel filterrensning |
| Collection system | INERT neutralisation bath |
| Material | AISI 304 rustfrit staal (helkonstruktion, undtagen vognstel) |
| Air consumption | 1530 nl/min |
| Supply pressure | 6 bar |
| Air supply hose | Ø 12 mm |
| Venturi units | 19 pcs |
| Inlet | Ø 50 mm |
| Dimensions (L × W × H) | 620 x 620 x 1600 mm |
| Weight | 80 kg |
INERT TECHNOLOGY — EN 17348:2022
What is an INERT vacuum cleaner?
Delfin's INERT vacuum cleaners are built to collect reactive metallic dust — the kind of dust that can self-ignite or react violently with oxygen, heat or water. Instead of collecting dust dry in a bag or container, the vacuum channels it directly into a neutralising liquid bath (typically water with a passivating agent added), where the reactive metal particle is inactivated on the spot. That is the difference between a controlled process and a vacuum that can itself become the ignition source.
Tested to EN 17348:2022
The INERT range is certified and performance-tested to EN 17348:2022, the harmonized European standard for industrial vacuum cleaners in ATEX zones. The test confirms that the neutralisation system actually inactivates reactive dust under real operating conditions — not merely in a lab setup. Combined with HEPA H14 final filtration (99.995 % efficiency at MPPS per EN 1822-5), the exhaust is clean down to the finest health-hazardous particles.
Typical applications
INERT vacuums are used at shooting ranges (lead dust and primer residue from cartridges), in ammunition manufacturing, for 3D printing with metal powders (aluminium and titanium are highly reactive when finely divided), in light-metal machining in aerospace and defense, and at process plants where pyrophoric powders such as zirconium and magnesium are handled. Some models are ACD-certified (IEC 60335-2-69 Annex AA) for non-ATEX-classified areas, others are ATEX-certified for Zone 20, 21 or 22 — but they all share the same neutralising liquid bath and the same uncompromising filtration.
INERT versus conventional HEPA filtration
A conventional HEPA vacuum retains particles in a filter but leaves them dry and potentially reactive. With reactive metallic dust that is not enough — the particle may react with oxygen (exothermic oxidation) or moisture (hydrolysis of certain metal hydrides) and disrupt the collection process itself. INERT technology solves this by inactivating the particle at the moment of collection: dust is immersed in the liquid before it can react, and the HEPA H14 filter then captures any residual aerosol before exhaust.
Questions and answers
What does INERT mean in this context?
INERT denotes a vacuum cleaner with a neutralising liquid bath in the collection tank. Dust is channelled directly into the liquid and inactivated immediately, so it cannot react with oxygen, heat or sparks. The technology is developed for reactive metallic dust (aluminium, titanium, magnesium, zirconium, lead dust from shooting ranges), where conventional dry collection would itself be an ignition source.
Is the INERT system tested to EN 17348:2022?
Yes. The entire Delfin INERT range is performance-tested to EN 17348:2022 -- the harmonized European standard for industrial vacuum cleaners in ATEX zones. The test confirms that the neutralisation bath actually inactivates reactive dust under real operating conditions, not just in a lab setup. Documentation available on request.
What types of dust is INERT technology intended for?
Reactive metallic dust: aluminium and aluminium alloys, titanium, magnesium, zirconium, fine iron powder, lead dust and primer residue from shooting ranges, and pyrophoric powders from aerospace and defense. For non-reactive dust (organic process dust, plastics, etc.) the INERT technology adds no further safety -- a standard ATEX or ACD model without liquid bath is selected instead.
How does the HEPA H14 final filter work together with the liquid bath?
The neutralisation bath inactivates dust at the moment of collection, but there will always be a fine aerosol fraction that passes the liquid surface. The HEPA H14 filter captures 99.995 % of particles down to 0.3 micrometres per EN 1822-5 (MPPS method) before exhaust. The combination secures both safe collection (no reactive dry particle) and clean exhaust (no health-hazardous aerosol). The filter is Included/Incluso as standard on all INERT models.
How does the 19V compare to the 14V variant?
The 19V is the DM model (larger 44 L tank vs 15 L on the 452 variant), and it has higher airflow (465 vs 300 m³/h) and higher vacuum (5000 vs 3700 mmH₂O). This makes it better suited to central suction with multiple parallel hoses. The 452 AIREX 14V is cheaper, smaller and has lower air consumption (1458 vs 1530 nl/min), but less liquid capacity (10 L vs 37 L). Choose the 19V for larger plants and larger collection cycles.
Can the DM AIREX 19V INERT be used in hydrogen zones?
No. This model is certified to gas group IIB, which covers hydrocarbons and ethylene, but NOT hydrogen and acetylene (which require IIC). The non-INERT version DM AIREX 19V 1/2D-2/2G (without INERT bath) is certified to IIC and can be used in hydrogen zones, but lacks the neutralisation bath. If both hydrogen and reactive metallic dust are present simultaneously, it becomes a special case -- contact Particulair for assessment.