Tiger-Vac ATEX-12A (4W)
Pneumatic venturi vacuum for Zone 1 + Zone 21 (II 2GD) -- 4-wheel dolly, 38 L dust tank, 47.3 L liquid capacity, HEPA H14, for combustible dust and general housekeeping in combined gas/dust zones
- Pneumatic operation where electric ATEX vacuums are unsuitable (refineries, gas plants, chemical industry)
- Wet and dry recovery in Zone 1/21 -- the same unit handles liquids, slurries and combustible dust
- Asbestos and lead housekeeping per OSHA and EN 1822 H14 (HEPA is aerosol leak-tested)
- General housekeeping in process production where a 4-wheel dolly enables fast manoeuvring
- Sites without electrical supply where a 15 HP minimum compressor is available
- ATEX Directive 2014/34/EU -- II 2GD Ex h IIC T6 Gb Ex h IIIC T85 C Db -4 C <= Ta <= +37 C EN 17348 DT
- EN 17348:2022 (harmonized March 2023)
- IEC 60335-2-69 (industrial vacuums)
Tiger-Vac ATEX-12A (4W)
The Tiger-Vac ATEX-12A (4W) is a pneumatic single-venturi industrial vacuum certified II 2GD per EN 17348 DT -- approved for combined gas Zone 1 plus dust Zone 21 areas where electric power is not an option. The entire suction is driven by compressed air through a venturi nozzle, so there is no electrical ignition source in the suction circuit -- only the external compressor, which remains in a safe area. With a 38 L dust tank, 47.3 L liquid capacity, AISI 430 stainless construction and a 4-wheel dolly, the unit handles general housekeeping and the recovery of combustible or hazardous dusts (asbestos, lead, silica, mould) in refineries, chemical plants and battery manufacturing. HEPA H14 (212304B-HD) is aerosol leak-tested, OSHA compliant and included as standard.
Applications
- Pneumatic operation where electric ATEX vacuums are unsuitable (refineries, gas plants, chemical industry)
- Wet and dry recovery in Zone 1/21 -- the same unit handles liquids, slurries and combustible dust
- Asbestos and lead housekeeping per OSHA and EN 1822 H14 (HEPA is aerosol leak-tested)
- General housekeeping in process production where a 4-wheel dolly enables fast manoeuvring
- Sites without electrical supply where a 15 HP minimum compressor is available
Technical specifications
| ATEX marking | II 2GD Ex h IIC T6 Gb Ex h IIIC T85 C Db -4 C <= Ta <= +37 C EN 17348 DT |
|---|---|
| Internal / external zone | -- / 21 |
| Motor type | Single venturi, pneumatisk drift -- ingen elektriske dele i sugekredsen |
| Duty cycle | Continuous |
| Airflow | 187 m³/h |
| Vacuum | 274 mbar (2790 mmH₂O) |
| Container | 38 L |
| Sound pressure | 68 dB(A) |
| Filter class | H class |
| Filter type | HEPA H14 (EN 1822, 99,995 % MPPS) aerosol leak-testet, OSHA-compliant -- Tiger-Vac 212304B-HD |
| Primary filter | Main filter assembly PTFE-lamineret med ring 214279 til poly tanks (211430T) |
| Cleaning system | Ingen aktivt filterrens-system -- HEPA og hovedfilter skiftes ved fuld mætning |
| Collection system | Detachable container |
| Material | AISI 430 rustfri stål, krop og opsamlingstank |
| Supply pressure | 5,5 bar |
| Air supply hose | Ø 12.7 mm |
| Venturi units | 1 pcs |
| Inlet | Ø 50 mm |
| Dimensions (L × W × H) | 520 x 480 x 810 mm |
| Weight | 11.3 kg |
Questions and answers
Why pneumatic and not electric?
In combined zones with both gas Zone 1 and dust Zone 21 electric drive is generally not allowed -- even ATEX-certified electric motors have hot surfaces and contact elements that can act as ignition sources under fault conditions. Pneumatic venturi drive has no moving electrical parts: the compressed air alone creates the vacuum through the venturi nozzle. That is the safest construction for Category 2 areas.
Which compressor do I need?
A minimum of 15 HP (about 11 kW) installed compressor capacity is recommended. The compressed-air supply must be 5.5 bar with a flow of 16.5–21.2 L/s (approximately 990–1272 Nl/min), fed through a 1/2" (12.7 mm) air hose. Refrigerant-dried air (PDP +3 °C or better) is recommended to avoid condensation in the venturi nozzles, and a separate pressure regulator (219841) ensures stable operation.
Can it pick up liquids?
Yes. The ATEX-12A (4W) is certified for wet and dry recovery -- 47.3 L liquid capacity with a dedicated liquid filter (211394) that engages automatically when liquid is detected. The unit also handles combustible liquids because venturi drive is spark-free. For dry-only recovery with automatic poly-liner emptying, see the 2+2W MR variant.
What is the difference between 4W, 2+2W and 2+2W MR?
Drive and filter specs are identical (187 m³/h, 38 L tank, 68 dB(A), HEPA H14). The difference is in cart configuration and recovery type: the 4W has a 4-wheel dolly and the largest liquid capacity (47.3 L). The 2+2W has 2 fixed plus 2 swivel wheels for better manoeuvrability but only 28.5 L liquid capacity. The 2+2W MR is dry recovery only and is supplied with a poly-liner system (212100S-5 + 213780 retainer plate) for safe disposal of the recovered material.
Why AISI 430 stainless steel rather than 304?
AISI 430 is ferritic stainless steel and is the alloy Tiger-Vac chose for the ATEX-12A series for its high magnetic reluctance and lower risk of electrochemical pitting in mild acid environments. AISI 430 has slightly lower corrosion resistance in chloride-rich environments than AISI 304 but is fully suitable for the typical industrial applications the ATEX-12A is designed for (housekeeping, asbestos, lead, silica, general combustible dust). For continuous chloride exposure, an AISI 304-based model is recommended instead.
Is the HEPA filter aerosol leak-tested?
Yes. Every ATEX-12A is supplied with HEPA filter 212304B-HD (99.99 % MPPS at 0.3 micron) and each machine is individually aerosol leak-tested at Tiger-Vac's factory before shipping. The filter is OSHA compliant and meets EN 1822 H14 class, which is required for asbestos, lead and other CMR substances. A test certificate accompanies the delivery on request.