Delfin DM2 EL BL 1/2D
ATEX Zone 21 industrial vacuum cleaner with Longopac for dust-free discharge
The Delfin DM2 EL BL 1/2D is a powerful, single-phase industrial vacuum cleaner designed for the safe collection of combustible dust in Zone 21 areas. It is certified for Zone 20 internally and Zone 21 externally and equipped with a Longopac ESD endless bag system for continuous, dust-free disposal. This makes it ideal for production environments where filtration performance, safety, and clean waste handling are critical.
- ATEX marking: II 1/2D Ex h tb IIIC T80°C (Int) / T95°C (Ext) Da/Db
- Certified for Zone 20 inside and Zone 21 outside
- Motor: single-phase 230 V, 2.2 kW – low-noise operation (74 dB(A))
- Filter: antistatic polyester M-class, 30,000 cm² with manual cleaning
- HEPA H14 filter 26,000 cm² (99.995% efficiency, MPPS method)
- Longopac ESD endless bag – continuous, dust-free discharge
Technical construction
The vacuum is powered by two bypass motors (1.1 kW each), delivering a maximum airflow of 430 m³/h and a vacuum pressure of 2,250 mm H₂O. The large 30,000 cm² filter ensures stable suction and low resistance, while the H14 post-filter provides maximum air purity. The compact frame and Longopac system make the unit ideal for workplaces where frequent emptying would otherwise release dust or contamination.
Safety and certification
- Certified by a Notified Body for Zone 20 internal (Da) and Zone 21 external (Db)
- Compliant with EN 17348, EN IEC 62784:2018, and IEC 60335-2-69
- Vacuum head Ex tb Dust Tight IP64 – tested against dust ingress
- All non-metallic parts are ESD-safe and supplied with conductive ATEX accessories
Technical note
In Zone 21 installations, tightness and grounding are critical for explosion safety. The DM2 EL BL 1/2D is certified for Zone 20 inside and Zone 21 outside, enabling safe collection of combustible dust directly within the filter and Longopac system. When properly grounded, the system maintains resistance below 10⁶ Ω. Use only conductive hoses and accessories in environments where dust from flour, sugar, metal, or pharmaceutical powders can present an ignition risk.
Need advice on Zone 21 vacuum systems?
We can help you select certified ATEX equipment, Longopac solutions, and documentation for combustible dust applications.
FAQ
What does II 1/2D (Da/Db) mean?
It indicates very high internal protection (Zone 20) and enhanced external protection (Zone 21).
How does the Longopac system work?
Collected dust is continuously sealed in an ESD-safe endless bag and cut off without operator contact, ensuring clean and safe emptying.
What is the filter class?
HEPA H14 with 99.995% efficiency according to EN 1822-5.
Which industries use the DM2 EL BL 1/2D?
Typically food, chemical, metalworking, and pharmaceutical production where ATEX compliance and dust-free handling are required.
Related links
Technical specifications
| Parameter | Value |
|---|---|
| ATEX marking (Int/Ext) | II 1/2D Ex h tb IIIC T80°C (Int) / T95°C (Ext) Da/Db |
| Zone classification | 20 (internal) / 21 (external) |
| Voltage / Frequency | 115 / 230 V – 50/60 Hz (1~) |
| Power / Current | 2.2 kW / 16 A |
| Airflow | 430 m³/h |
| Vacuum | 2,250 mm H₂O |
| Noise level | 74 dB(A) |
| Inlet / Hose diameter | Ø80 mm |
| Collection system | 20 m Longopac ESD endless bag |
| Primary filter | Antistatic polyester M – 30,000 cm² / Ø500 mm |
| Filter cleaning | Manual / Dustop system |
| HEPA final filter | H14 – 26,000 cm² – 99.995% (MPPS) |
| Material | Lacquered steel with ESD components |
| Dimensions (L×W×H) | 80 × 66 × 168 cm |
| Weight | 72 kg |
| Accessories | ATEX kit TA.1305.0000 (Ø50 mm antistatic dry kit) |
