Clean air is a number you'll be audited on. We design to the number.
Automotive
High-throughput lines generate fume, oil mist and paint VOCs in parallel — and EV assembly adds thermal-runaway risk. Source capture has to scale to line speed without becoming a bottleneck.
| Contaminants | Welding fume (Mn, Cr(VI), Ni) · oil mist & coolant aerosol · paint solvent VOC |
| Generated at | Body-in-white welding, CNC machining, grinding, e-coat & paint, EV battery assembly |
| Audited against | Factories Act OELs · CPCB · BIS welding-fume guidance · ISO 16890 |
| Cost of failure | Chronic-exposure liability (manganism), oil-mist slip/fire hazard, paint-VOC violations, line stoppage |
NAF approach: source-capture weld extraction + oil-mist coalescers + VOC handling, scalable to line throughput.
Engineering & Fabrication
Foundry and grinding dust carry crystalline silica. Silicosis is irreversible – and it sits on the plant’s account.
General and heavy engineering shops run welding, thermal cutting, grinding, casting and machining in one hall, with demand that swings by the hour. Add crystalline silica from casting and shot-blast, and combustible dust from aluminium or magnesium grinding, and a single fixed system won’t cover it.
| Contaminants | Welding & thermal-cutting fume (Mn, Cr(VI)) · crystalline silica (foundry, shot-blast) · combustible metal dust (Al/Mg) · oil mist |
| Generated at | Welding, plasma/laser & oxy-fuel cutting, grinding & fettling, casting, shot blasting, machining |
| Audited against | Factories Act OELs · crystalline-silica OEL · CPCB · PESO (combustible metal dust) · ISO 16890 |
| Cost of failure | Silicosis liability, metal-dust explosion, fume-exposure claims, filter failure under fluctuating load |
NAF approach: process-matched source capture across mixed operations, with silica-rated filtration and spark/explosion protection; modular so it scales with a job shop’s swinging load.
Aviation & Aerospace
CFRP machining dust shorts electronics and fails FOD control near assembly; surface-treatment lines add chromate fumes. Traceable filter classes matter as much as raw capture here.
| Contaminants | CFRP/GFRP composite dust (conductive, respirable) · chromate & passivation fumes · bonding VOCs |
| Generated at | Composite trimming & drilling, surface treatment, paint & bonding, additive manufacturing |
| Audited against | AS9100 · FOD-control programs · ISO 16890 · OEL for hexavalent chromium |
| Cost of failure | FOD-driven rework/scrap, electrical shorting from conductive dust, audit non-conformance, Cr(VI) exposure |
NAF approach: spark-safe, antistatic extraction with HEPA final stage and documented, traceable filter classes.
Food & Beverage
Most F&B buyers underrate dust-explosion risk until an audit or an incident forces it. Add hygiene and allergen carryover, and you need extraction that’s washdown-grade and explosion-protected at once.
| Contaminants | Combustible dust (sugar, flour, starch, milk powder, spice) · grease aerosol · allergen particulate |
| Generated at | Milling, sifting, mixing, pneumatic conveying, bagging, spray drying |
| Audited against | FSSAI hygiene · PESO (explosive atmosphere) · NBC fire provisions · hygienic/washdown design |
| Cost of failure | Dust explosion, line shutdown, allergen cross-contact recall, FSSAI non-compliance |
NAF approach: ATEX-rated, washdown-grade extraction with explosion isolation and venting; AFS-engineered filter media.
Pharma & Chemical
An OEB-4 compound drifting into the corridor is a recall – not a housekeeping problem.
Potent APIs, sensitisers and solvent vapours have to be contained at the point of generation, with no cross-contamination between product changeovers. Revised Schedule M raises the bar on exactly this. Generic dust collection doesn’t pass.
| Contaminants | Potent API dust (OEB 3–5) · solvent vapours · sensitising excipients |
| Generated at | Dispensing, granulation, tablet coating, sampling booths, drum filling |
| Audited against | CDSCO · Revised Schedule M (GMP) · ISO 14644 cleanroom class · EN 1822 H14 |
| Cost of failure | Batch rejection, cross-contamination recall, GMP observations, OEL-exceedance liability |
NAF approach: containment booths + HEPA H14 with bag-in/bag-out safe-change filtration, engineered to documented capture efficiency.
We earn the order by understanding your line - before we quote a system.
Plant & media analysis
We characterise the contaminant, the source points and the standard you're held to — on site, not from a form.
German-engineered design
Systems designed with ULMATEC GmbH and AFS, matched to your capture range and filter class — not a stocked SKU.
Compliance evidence
Capture efficiency, filter classes and explosion-protection measures documented for your auditors.
Lifecycle &
service
Filter replacement, performance checks and spares so the system keeps meeting the number it was designed to.
Get a dust extractor configured for your process
Tell us your dust type, process, and air volume requirement. Our team will configure the right NAF Dust Extractor filter, fan, discharge, controls, module by module, and give you clear pricing with a complete specification and compliance documentation.
Or call us directly: +91 63745 22593