Axial Flow Fan for Paint Spray Booth Ventilation
Vayuvents Pvt. Ltd. manufactures and supplies heavy-duty axial flow fans specifically configured for paint spray booth ventilation applications across automotive, auto component, furniture, metal fabrication, and general engineering industries in India and export markets.
Paint spray booths generate concentrated solvent vapours, paint mist, and overspray during finishing operations. Without adequate ventilation, these create serious fire, explosion, and health hazards for workers. A correctly sized and constructed axial flow fan is the most critical safety component of any spray booth system.
Vayuvents' paint booth axial fans are built with spark-resistant impellers, non-sparking casing construction, and flameproof or explosion-proof motor options — meeting IS 5572 hazardous area classification requirements for Zone 1 and Zone 2 environments where flammable solvent vapours are present.
Key requirement: Maintaining a minimum face velocity of 0.5 m/s (100 FPM) across the booth opening, as specified by Factory Inspector guidelines and OSHA/NFPA 33 equivalent Indian safety standards. Our fans are sized and tested to meet this requirement at your specific booth dimensions.
How an Axial Fan Works in a Paint Spray Booth
The axial fan creates a controlled, laminar airflow path through the booth that carries solvent fumes and overspray away from the operator and out through the exhaust system.
Fresh Air Supply
Filtered fresh air enters the booth through the supply plenum or air make-up unit at the front or ceiling of the booth, creating a positive pressure zone that pushes air towards the exhaust.
Laminar Airflow Across Work Surface
The axial fan creates uniform, laminar airflow at 0.5–1.0 m/s across the entire booth cross-section. This carries overspray and solvent vapours away from the operator's breathing zone in a controlled direction.
Fume & Overspray Capture
Overspray particles are captured by the exhaust filter bank (typically polyester fibre filters or water wash panels) before the airstream enters the fan. The fan handles only filtered air, protecting the impeller from paint build-up.
Safe Exhaust to Atmosphere
The axial fan draws filtered air through its impeller and discharges it to atmosphere through an exhaust duct and stack, maintaining the negative pressure inside the booth that prevents solvent vapours from escaping into the workshop.
Types of Axial Fans for Paint Spray Booths
The correct fan type depends on the booth design, solvent type, airflow requirement, and installation space. Vayuvents recommends and supplies the following variants for paint booth applications:
Belt Driven Axial Fan
Motor located outside the solvent airstream via belt-and-pulley arrangement. Safest option for high-solvent environments. Speed adjustable by pulley change.
Most RecommendedTube Axial Fan
Compact in-duct design ideal for cross-flow booth configurations. Suitable for waterborne paint systems where explosion risk is lower.
Flameproof Motor Axial Fan
Direct-drive axial fan with ATEX/flameproof motor certified for Zone 1 hazardous area. For applications where belt drive is not feasible due to space constraints.
Vane Axial Fan
Guide vanes improve static pressure recovery — used in longer exhaust duct runs where higher pressure is needed to overcome duct resistance.
Technical Specifications
Standard performance envelope for Vayuvents axial fans supplied for paint spray booth applications. All units are performance-tested before dispatch.
| Parameter | Specification |
|---|---|
| Airflow Capacity | 5,000 m³/hr – 2,00,000 m³/hr |
| Face Velocity | 0.5 m/s – 1.5 m/s (100–300 FPM) |
| Static Pressure | Up to 80 mmWG (exhaust duct resistance) |
| Motor Power | 0.75 kW – 55 kW |
| Fan Diameter | 400 mm – 2,000 mm |
| Impeller Material | Spark-resistant Aluminium / GI / SS304 |
| Casing Material | MS (painted) / GI / SS304 |
| Motor Enclosure | IP55 standard / Flameproof (Ex-d) on request |
| Drive Type | Belt driven (standard) / Direct drive (waterborne) |
| Hazardous Area | Zone 1 / Zone 2 as per IS 5572 on request |
| Standards | IS 4894, IS 6966, IS 5572 (hazardous area) |
Features of Our Paint Booth Axial Fans
- Spark-resistant aluminium or GI impeller construction prevents ignition of solvent vapours
- Belt-drive motor placement outside the airstream eliminates motor from hazardous zone
- Flameproof (Ex-d) and explosion-proof motor options for Zone 1 and Zone 2 classification
- Dynamically balanced impeller for vibration-free operation and long bearing life
- Anti-corrosion paint finish on MS components resistant to solvent and paint contact
- Access door provision for impeller and filter inspection without duct disassembly
- Variable speed control via VFD for airflow adjustment between spray and cure cycles
- Thermal overload and current protection in motor starter for safe unattended operation
- Works performance test certificate with measured airflow (m³/hr) and static pressure data
⚠ Safety-Critical Requirements for Paint Booth Fans
- Fan impeller must be spark-resistant — aluminium, GI, or non-ferrous material
- Motor must be located outside the solvent airstream (belt drive) or flameproof rated (direct drive)
- Minimum face velocity of 0.5 m/s must be maintained at all times during spraying
- Fan must maintain negative pressure inside the booth to prevent vapour escape
- Exhaust filters must be installed upstream of fan to prevent paint build-up on impeller
- All wiring and electrical components inside the booth must be rated for hazardous areas
Industries That Use Axial Fans for Paint Spray Booths
Automotive OEMs
Body shop, chassis coating, and underbody painting lines
Auto Components
Brake parts, engine components, brackets — powder and liquid coating
Furniture & Wood
Lacquer, varnish, and nitrocellulose coating on wood furniture
Metal Fabrication
Structural steel, gates, equipment — epoxy and enamel painting
Aerospace
Aircraft component painting and MRO facilities
Two-Wheelers
Frame, tank, and body panel painting in two-wheeler plants
General Engineering
Machine tools, industrial equipment, and heavy machinery painting
Marine & Shipbuilding
Marine-grade anti-corrosion paint application on ship components
Pump & Valve
Industrial pump and valve body painting in pump manufacturing plants
White Goods
Appliance body painting — refrigerators, washing machines, AC units
✓ Supply & Support: Vayuvents manufactures all paint booth axial fans at our Vasai, Mumbai works. We can visit the site for booth measurement, fan sizing, and duct layout design. Installation supervision and commissioning are available across India. Export supply to UAE, Saudi Arabia, Qatar, and Oman with full commercial documentation.
FAQs — Axial Flow Fan for Paint Spray Booth
Axial flow fans are preferred in paint spray booths because they deliver large volumes of airflow at low pressure — exactly what is needed to exhaust solvent fumes and overspray from the booth interior while maintaining the correct air velocity across the work surface. They are compact, easy to mount in walls or ducts, and available in spark-resistant and explosion-proof configurations required in paint environments.
The required airflow depends on the booth size and coating type. As a general guideline, a face velocity of 0.5 m/s (100 FPM) across the booth opening is the minimum for solvent-based paints. For a standard 3m x 3m x 6m paint booth, airflow of approximately 16,000 to 20,000 m³/hr is typically required. Vayuvents engineers size the correct fan based on your specific booth dimensions and paint process.
Yes. Paint spray booths contain flammable solvent vapours which create an explosive atmosphere. Vayuvents supplies axial flow fans with spark-resistant aluminium or GI impellers, non-sparking casing construction, and motors with flameproof or explosion-proof enclosures suitable for Zone 1 and Zone 2 hazardous areas as classified under IS 5572.
Belt-driven axial fans are generally preferred for solvent-based paint spray booths because the motor is located outside the airstream, away from flammable vapours. This keeps the motor from the hazardous zone and allows easy speed adjustment by changing pulleys. Direct-drive configurations with flameproof motors are used where space constraints prevent belt drive installation.
Axial flow fans for paint spray booths are widely used across automotive OEMs and auto component manufacturers, two-wheeler plants, commercial vehicle manufacturers, furniture and wood coating plants, metal fabrication and sheet metal shops, plastic moulding facilities, aerospace component painting, pump and valve manufacturers, and general engineering workshops across India and in export markets including Saudi Arabia and UAE.
For solvent-based paint booths, spark-resistant aluminium impellers with MS or GI casing are recommended. For waterborne paint booths, standard MS or GI construction is acceptable. For acid-catalysed or two-component coating systems, SS304 impellers are preferred. Vayuvents recommends the appropriate material combination based on the specific solvents and coating materials in your process.
Contact Vayuvents Pvt. Ltd. at enquiry@vayuvents.com or call +91 90961 88703. Share your booth dimensions (L x W x H), type of paint or coating being sprayed, required face velocity, and whether the booth is wet-filter, dry-filter, or water-wash type. We will size the correct fan and provide a detailed technical and commercial proposal within 24 hours.
