Delfin MTL 20.18 3D

ATEX Zone 22 H-Class industrial vacuum for spot extraction and clinical environments

The Delfin MTL 20.18 3D is a compact, stationary H-Class industrial vacuum cleaner designed for the safe collection of hazardous and combustible dust in areas classified as Zone 22 (category 3D). It is intended for spot extraction and general cleaning in clinical and hygienic environments where high filtration efficiency and low noise levels are essential. The unit features a side channel blower, an antistatic M-Class primary filter, and a HEPA H14 final filter, making it suitable for continuous operation and maximum health protection.

• Zone classification: II 3D Ex h tc IIIC T80 °C Dc
• Motor: three-phase 400 V – 2.2 kW – 4.6 A
• Airflow: 270 m³/h | Vacuum: 3,000 mm H₂O
• Primary filter: antistatic polyester (M-Class) – 12,000 cm²
• Final filter: HEPA H14 – 11,000 cm² – 99.995 %
• Container: 22 L – steel antistatic construction – Ø 50 mm inlet
• Noise level: 70 dB(A)

Technical design

The MTL 20.18 3D is built as an H-Class vacuum cleaner in compliance with IEC 60335-2-69 Annex AA and provides consistent suction performance in continuous operation. The side-channel blower is dust-tight (Ex dust-tight) and requires minimal maintenance. The filtration system includes a M-Class primary filter (12,000 cm²) and a HEPA H14 final filter (11,000 cm²) ensuring maximum particle retention. All components are antistatic and fully grounded according to EN 17348.

Options and system integration

The MTL 20.18 3D can be supplied with several factory options depending on application and environment. All components are antistatic and designed according to EN 17348:

• H – HEPA H14 absolute filter (included as standard)
• X – AISI 304 stainless steel container (for hygienic environments)
• XX – AISI 304 stainless steel tank and filter chamber
• XXX – Complete AISI 304 stainless steel chamber and frame
• MT – Grounding system (included as standard)
• SB – Safe Bag system for safe dust disposal (optional)
• FI.0469.0000 – Replacement bags for Safe Bag system

Safety and certification

• ATEX Category 3D – self-declared in accordance with Directive 2014/34/EU
• Complies with EN 17348 and EN IEC 62784:2018 for Zone 22 applications
• H-Class according to IEC 60335-2-69 Annex AA for toxic dust
• Not ATEX-certified by a Notified Body and not approved for Zone 20 internal use
• All parts are antistatic and grounded to prevent ESD accumulation

Technical note

This vacuum cleaner is self-declared for use in Zone 22 (category 3D) and follows EN 17348 for the safe collection of non-conductive and low-risk combustible dust in areas where an explosive atmosphere may occur only occasionally. It is not ATEX-certified by a Notified Body and must not be used for dust requiring Zone 20 certification internally. As an H-Class model, it is tested according to IEC 60335-2-69 Annex AA and provides maximum protection against hazardous dust. Always use antistatic hoses and grounded accessories to maintain a resistance below 10⁶ Ω.

FAQ

Is the Delfin MTL 20.18 3D ATEX-certified by a third party?
No – it is a self-declared 3D model following EN 17348, not tested by a Notified Body.
What dust class does it belong to?
It is H-Class according to IEC 60335-2-69 Annex AA, suitable for hazardous and fine dust such as heavy metals, pharmaceutical powders and fine process dust.
Can it collect combustible dust?
Yes, for dry non-conductive combustible dust in Zone 22 and non-classified areas, but not for dust requiring Zone 20 certification inside the vacuum.
What options are available?
AISI 304 stainless steel versions, Safe Bag system and grounding kit can be selected on request.

Related links

• ATEX ABC
• EN 17348
• Know your Ohm – know your ATEX risk