Delfin ZFR EV AP 560 K4 Z22
Top model in the AP 560 chassis – 3,500 m³/h airflow, 4 kW centrifugal fan, 36 mbar vacuum, 100 L container, for large central suction systems in ATEX Zone 22
- Larger central suction systems in Zone 22 with 4-6 simultaneous collection points or long piping
- Multi-arm welding halls where several welding booths are served by the same deduster
- Heavy-duty source capture in CNC halls with greater dust potential (aluminium machining, MDF milling)
- Cyclone-based central suction installation where a primary separator pre-treats heavy particles
- Process plants with fixed suction circuits on larger mixers, granulators or extruders
- 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 ZFR EV AP 560 K4 Z22
The Delfin ZFR EV AP 560 K4 Z22 is the top model in the AP 560 chassis – a stationary ATEX deduster with a 4 kW centrifugal fan delivering 3,500 m³/h airflow at 370 mmH²O (36 mbar) static vacuum. It is intended for large central suction systems with 4-6 collection points, long piping runs or particularly demanding source-capture applications. With 370 mmH₂O against the K2 variant's 210 mmH₂O the K4 can draw through longer piping runs without losing suction-point vacuum, and the 40 % greater airflow enables simultaneous extraction arms at multiple workstations. Antistatic polyester ANT M primary filter, HEPA H14 final filter and 100-litre detachable container with plastic liner. ATEX II 1/3D Ex h IIIC (internal Zone 20, external Zone 22), compliant with EN 17348 according to the Delfin price list 2026. Weighs 130 kg against 100 kg for the K2 according to the Delfin price list 2026.
Applications
- Larger central suction systems in Zone 22 with 4-6 simultaneous collection points or long piping
- Multi-arm welding halls where several welding booths are served by the same deduster
- Heavy-duty source capture in CNC halls with greater dust potential (aluminium machining, MDF milling)
- Cyclone-based central suction installation where a primary separator pre-treats heavy particles
- Process plants with fixed suction circuits on larger mixers, granulators or extruders
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 | 100 L |
| Sound pressure | 74 dB(A) |
| Filter class | H class |
| Filter type | HEPA H14 (EN 1822-5), 99.995 % MPPS, 10 m² filter area – included as standard |
| Primary filter | Star/bag filter, polyester ANT M class, antistatic (IEC 60335-2-69), 50,000 cm², diameter 560 mm, manual cleaning |
| Cleaning system | Manual filter cleaning via external handle |
| Collection system | Plastic bag |
| Material | Painted steel construction (AISI 304 as option) |
| IP class | IP55 |
| Power | 4.0 kW |
| Voltage | 400 V / 50 Hz / 3~ |
| Inlet | Ø 200 mm |
| Dimensions (L × W × H) | 780 x 1320 x 2600 mm |
| Weight | 130 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
When does the K4 become necessary over the K2?
According to the Delfin price list 2026, the K4 delivers 3,500 m³/h and 370 mmH₂O against the K2's 2,500 m³/h and 210 mmH₂O. The K4 is therefore the natural choice for several simultaneous collection points or a long pipe run. Contact us and we will calculate your system.
How large is the motor on the K4?
The Delfin price list 2026 gives the motor power as 4 kW for the K4 and 2.2 kW for the K2, both 400 V three-phase. Contact us if you need current draw and inrush current for sizing the installation.
The noise level is rated at 74 dB(A) – what does this mean in practice?
According to the Delfin price list 2026, the noise level is 74 dB(A) measured to EN ISO 3744. For comparison, the K2 is 72 dB(A) and the ZFR EV 420 70 dB(A). The actual level at the workstation depends on the room and the placement.
Can the K4 be used as a 'master deduster' with multiple sub-suction circuits?
Yes, the K4 can supply a branched pipe system with several collection points. According to the Delfin price list 2026, flanged Y-branches are available, e.g. SL.2775.0200 (Ø200/150/150) and SL.3022.0200 (Ø200/100/100). Earth grounding must run through the entire system. Contact us for sizing and air balancing.
What is the difference between the K4 and a CUBE 20 K4 PN – they have the same motor power?
According to the Delfin price list 2026, both have a 4 kW fan delivering 3,500 m³/h and 370 mmH₂O. The ZFR EV AP 560 K4 has a star/pocket filter of 50,000 cm² with manual cleaning, a 100 L container, weighs 130 kg and measures 78 x 132 x 260 cm. The CUBE 20 K4 PN has 2 cartridge filters totalling 200,000 cm² with automatic compressed-air cleaning, a 90 L container, weighs 360 kg and measures 135 x 89 x 255 cm. Choose the CUBE if the filter should clean itself during operation.
What installation requirements does the K4 place on flooring and anchoring?
The Delfin price list 2026 gives the weight as 130 kg and the dimensions as 78 x 132 x 260 cm. The floor must be level and able to carry the machine. Contact us if you are in doubt about the placement.