Tiger-Vac ATEX-12A (2+2W) MR
Pneumatic venturi vacuum for Zone 1 + Zone 21 (II 2GD) -- dry recovery with Middle Ring and conductive poly-liner, 2+2 wheel cart, 38 L tank, HEPA H14, for CMR dust and safe disposal
- Asbestos abatement in refinery boundary zones and chemical industry (Zone 1 + Zone 21)
- Lead, silica and quartz dust where safe disposal is critical
- Pharma CMR substances in pilot production with combined-zone marking
- Lithium and battery electrode dust in cell production
- Fire- and explosion-hazardous fine dust where liquid is not part of the process
- 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 (2+2W) MR
The Tiger-Vac ATEX-12A (2+2W) MR (Middle Ring) is the dry-only variant of the 2+2W platform -- the same II 2GD certification, the same drive specs, the same cart, but optimised for safe disposal of combustible or CMR-classified dust. The unit is equipped with a Middle Ring that holds a conductive poly-liner (212100S-5, 40 L, 5-pack) in place inside the dust tank; when the liner is full the draw string is tied and the bag can be lifted out without releasing dust. The main filter is an SD* assembly with 4 laces for a white filter cage (219046A) plus a prefilter (215179) to protect the expensive HEPA H14 downstream. Used mainly for asbestos, lead, silica, lithium dust and pharma CMR substances where liquid is not part of the recovery.
Applications
- Asbestos abatement in refinery boundary zones and chemical industry (Zone 1 + Zone 21)
- Lead, silica and quartz dust where safe disposal is critical
- Pharma CMR substances in pilot production with combined-zone marking
- Lithium and battery electrode dust in cell production
- Fire- and explosion-hazardous fine dust where liquid is not part of the process
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 SD* m/4 laces til white filter cage (219046A) + prefilter 215179 |
| 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) | 550 x 600 x 1020 mm |
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.
What is a "Middle Ring" and why does it matter?
The Middle Ring is a mechanical retainer ring fitted vertically inside the dust tank that holds a conductive poly-liner (212100S-5) in place during the suction cycle. As the liner fills with dust the ring prevents the bag from twisting or collapsing under vacuum. At disposal the draw string at the top of the liner is tied and the whole bag is lifted out in one piece -- no dust is released into the surrounding environment. It is the preferred solution for asbestos, lead and pharma CMR where the user must not touch the collected material at disposal.
Why an additional prefilter (215179) on top of the main filter?
The 215179 prefilter is an SD* fibre element with an elastic band that fits around the main filter (219046A) as the first line of defence. It captures the largest particles and prevents them from puncturing the main filter or clogging the expensive HEPA H14 (212304B-HD) prematurely. The prefilter is easy to wash or replace and significantly extends the life of both the main filter and the HEPA. In practice: prefilter replaced monthly, main filter yearly, HEPA every two years under typical use.
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.
Why is the weight not listed?
Tiger-Vac's factsheet for the 2+2W variant does not state weight or dimensions in its specifications table. We have therefore set the dimensions to 550 x 600 x 1020 mm based on cart estimates and noted the weight as not specified. Contact us for up-to-date figures if you are planning transport or lifting.