Delfin CUBE 20 K4 PN Z22
Top-model ATEX deduster in the CUBE chassis for Zone 22 – 4 kW centrifugal fan, 3,500 m³/h, 36 mbar vacuum, 2 cartridge filters with pulse-jet cleaning, continuous operation without operator intervention
- Large central suction systems in ATEX Zone 22 with 4-6 collection points and continuous 24/7 operation
- Chemical and pharmaceutical industry with demanding powder handling in classified zones
- Food production with larger flour or spice dust under Zone 22 regime
- Powder coating halls with full zone classification and high dust volume
- Light-metal machining in aerospace or defense industry with ATEX Zone 22 classification
- ATEX Directive 2014/34/EU – II 1/3D Ex h IIIC T100°C (int) / T135°C (ext) Da/Dc
- EN 17348:2022 (harmonized March 2023)
- IEC 60335-2-69 (industrial vacuums)
Delfin CUBE 20 K4 PN Z22
The Delfin CUBE 20 K4 PN Z22 is the top model in Delfin's ATEX deduster range in the CUBE chassis – a stationary, certified industrial dust collector for ATEX Zone 22. With a 4 kW centrifugal fan, 3,500 m³/h airflow and 370 mmH²O (36 mbar) static vacuum it is the top model in the CUBE range. The combination of automatic pulse-jet cleaning on 2 large cartridge filters (200,000 cm² combined filter surface), Ex-certified motor and control box, and a 90 L detachable container with plastic liner makes it ideal for large central suction systems with 4-6 collection points in classified production areas. Note that the noise level here is 74 dB(A) (2 dB(A) higher than the K2 variant due to the stronger motor). ATEX-certified II 1/3D Ex h IIIC T100°C (int) / T135°C (ext) Da/Dc, category 1/3D (internal Zone 20, external Zone 22), compliant with EN 17348 according to the Delfin price list 2026. IP65 enclosure, stainless steel AISI 304 electrical panel, forklift lifting points in the chassis bottom.
Applications
- Large central suction systems in ATEX Zone 22 with 4-6 collection points and continuous 24/7 operation
- Chemical and pharmaceutical industry with demanding powder handling in classified zones
- Food production with larger flour or spice dust under Zone 22 regime
- Powder coating halls with full zone classification and high dust volume
- Light-metal machining in aerospace or defense industry with ATEX Zone 22 classification
Technical specifications
| ATEX marking | II 1/3D Ex h IIIC T100°C (int) / T135°C (ext) Da/Dc |
|---|---|
| Internal / external zone | 20 / 22 |
| Motor type | IE3 centrifugal fan (4 kW, three-phase 400 V), Ex h IIIC T135°C external / T100°C internal, Ex tb Dust Tight Certified |
| Duty cycle | Continuous |
| Airflow | 3500 m³/h |
| Vacuum | 36 mbar (370 mmH₂O) |
| Container | 90 L |
| Sound pressure | 74 dB(A) |
| Filter class | H class |
| Filter type | HEPA H14 (EN 1822-5), 99.995 % MPPS, final filter – included as standard |
| Primary filter | 2 polyester cartridge filters, class M antistatic (ANT M), 200,000 cm² total filter area |
| Cleaning system | Automatic pulse-jet cleaning (PN – pneumatic reverse flushing with compressed air during suction), alternating between cartridges |
| Collection system | Plastic bag |
| Material | Painted steel construction with stainless AISI 304 electrical panel and forklift lifting points in the base |
| IP class | IP65 |
| Power | 4.0 kW |
| Voltage | 400 V / 50 Hz / 3~ |
| Inlet | 1 x Ø 200 mm / 2 x Ø 150 mm |
| Dimensions (L × W × H) | 1350 x 890 x 2550 mm |
| Weight | 360 kg |
EXTRACTION ARM & SOURCE CAPTURE — CENTRAL DUST COLLECTION
Extraction arm for source capture on central dedusters
An articulated extraction arm is a free-standing, balanced arm that places the deduster's suction point directly at the particle source — welding, grinding, solder fume, bag emptying, mixing stations or quality-control booths. The difference from a fixed hose run is that the operator can adjust the arm's height, reach and angle during operation without tools and without stopping the suction. This delivers far more effective source capture than a general room-extraction system, because the contamination is collected before it reaches the operator's breathing zone.
Why a deduster + extraction arm work so well together
The deduster is a centrifugal-fan based particle collector built for high airflow at low static vacuum — exactly the characteristic an extraction arm needs. The arm's flexible run has low pressure drop per metre, and the wide trumpet-shaped hood at the end loses a small additional amount of vacuum. A centrifugal fan (1,000-3,500 m³/h) supplies the required volume, whereas a side-channel blower (typically 200-400 m³/h at high vacuum) would concentrate the suction on far too small a capture area.
Available dimensions and accessories
Three standard arm configurations are available as accessories, all 3000 mm reach and with earth grounding (MT) included for ESD control: TA.0177.0000 (Ø150 arm to Ø150 filter chamber inlet), TA.1256.0000 (Ø150 arm to Ø200 filter chamber inlet — reducing from the deduster's larger inlet to a smaller arm) and TA.0511.0000 (Ø200 arm to Ø200 filter chamber inlet — maximum airflow). Tubo-flex reductions (SL.2632.0200, SL.6882.0200, SL.3775.0200, SL.6883.0200) allow connection of other hose dimensions, and Y-branches (SL.2775.0200, SL.2692.0200, SL.3022.0200) enable two extraction arms on the same deduster.
Typical industrial scenarios
Arm-equipped dedusters are used for welding fume extraction (MAG, MIG, TIG, arc welding), grinding dust from metal and polymer processing, solder fume and brazing vapours in electronics manufacturing, bag emptying and powder handling in food, pharmaceutical and chemical production, and quality-control booths where particles must be captured but not dispersed. On the ATEX Zone 22 models the arm installation requires ESD earthing throughout the system, and the MT function delivers exactly that. On ACD models (non-ATEX areas with combustible dust) earthing is likewise recommended, because static build-up on the inner wall of the arm can generate ignition sources even without ATEX classification.
Questions and answers
Why 74 dB(A) on the K4 Z22 versus 72 dB(A) on the K4 ACD – same motor?
According to the Delfin price list 2026, the noise level is 72 dB(A) on the ACD version and 74 dB(A) on the 1/3D version. The price list does not explain the difference.
Can the CUBE 20 K4 PN Z22 handle Zone 21 if I upgrade the installation?
No. It is category 1/3D: internal Zone 20 and external Zone 22. For external Zone 21 a category 1/2D model must be used. The category follows the machine's construction and certification, not the installation.
What does the Z22 version require extra in the installation versus the ACD version?
The installation must match your zone classification and explosion protection document. According to the Delfin price list 2026, earth grounding (MT) is included. Contact Particulair if you would like the installation reviewed.
How fast is delivery time for the CUBE 20 K4 PN Z22 in Scandinavia?
Delivery time depends on the configuration and Delfin's current production. Write to sales@particulair.com for a current delivery time.
What documentation is required upon delivery – what should I retain?
The machine is supplied with Delfin's CE declaration of conformity, a nameplate with the ATEX marking II 1/3D Ex h IIIC T100°C (int) / T135°C (ext) Da/Dc and instructions for use. Keep them with the rest of the installation's ATEX documentation. Contact Particulair if you need further documentation.
What is the difference between the Z22 and ACD versions?
The ACD version is for non-classified areas with combustible dust and is marked II 1/-D. The 1/3D version is used in external Zone 22 and has internal Zone 20. According to the Delfin price list 2026, the 1/3D version has a stainless steel electrical panel. Choose based on your zone classification, and contact us if in doubt.