Breathing Air Filter Sets
Coalescing filters, activated carbon filters and 3 stage breathing air sets for air filtration; water; oil and odour removal for the most demanding and sterile air applications.
3 stage breathing air filter systems
Port sizes: 1/4, 3/8, 1/2, 3/4 and 1 inch BSP thread, option NPT thread.
Pressure: 0.5 to 10 Bar (regulator is lockable), tested 15 Bar
Bowls: Polycarbonate fast mount safety twist lock with bowl guard, option Acid Alkali resistant or Aluminium bowls.
Drain: semi-automatic standard, option manual drain.
Ambient temperature: 0 to +60°C.
Comprises a 5 micron pre-filter to remove particles larger than 0.01mm and 90% of any water, and a 0.5 to 10 Bar pressure regulator.
Then 0.01 micron Red coalescing filter that traps remaining oil, water and particles larger than 0.00001mm
Finally, a Green Activated charcoal filter that traps any biological particles and any remaining oil vapour and odours giving technically absolutely clean air to give filtration down to 0.003ppm for the highest demanding air applications and provides safe, breathable air for the spray booth.
Supplied boxed with 2x mounting brackets and screws, pressure gauge, blanking plug and full instructions.
Every unit is factory assembled, flow, function, leak and 15 Bar pressure tested and silicone free so is ideally suited for spray booth air.
Spares from stock: (see related products below)
Filter elements: full set or individually (NUN0010036) 5 micron PE, (ZH04H) Red 0.01 coalescing + (ZH04HCA) Green activated charcoal.
Filter bowls: (ZGUF02B) Polycarbonate, ZGUF02BA acid/alkali resistant or (ZGUF02BAL) Aluminium.
High quality and performance is a result of more than 50 years manufacturing experience and dedication to total reliability.
This unit has passed EN12021 Air Quality Test for Breathing Air (see Breathing Air Test Report) 3.6 Bar compressed air supplied by HYUNDAI HY70100P Compressor.
3 Stage Breathing Air Sets
Why you need to use a 3 stage filter regulator set with coalescing and carbon filters.
A 3-stage filter regulator set with coalescing and carbon filters is essential for breathing air and paint spraying to ensure clean, dry, and oil-free air. Here’s why each stage is necessary:
1. First Stage – Particulate Filter (Water Separator)
Purpose: Removes large particles, dust, dirt, and bulk water.
Why it's needed: Compressed air contains moisture and solid contaminants that can clog tools, damage spray finishes, and be hazardous to breathe.
2. Second Stage – Coalescing Filter
Purpose: Removes fine oil aerosols, sub-micron particles, and additional moisture.
Why it's needed:
Even after the first filter, tiny oil and water mist particles remain in the air. These must be removed to prevent paint contamination and ensure safe breathing air. Paint spraying requires ultra-clean, oil-free air to prevent defects like fisheyes or poor adhesion.
3. Third Stage – Activated Carbon Filter
Purpose: Adsorbs oil vapours, odours, and traces of hydrocarbons.
Why it's needed:
Paint spraying requires air free from oil vapours to ensure a flawless finish. When used for breathing air, this filter removes harmful volatile organic compounds (VOCs) and other toxic gases, ensuring air is safe for human inhalation.
Additional Benefit – Regulator
Controls air pressure to ensure optimal operation of spray guns and breathing equipment.
Conclusion
A 3-stage filter system ensures that compressed air is clean, dry, and oil-free, which is critical for high-quality paint finishes and safe breathing air in industrial applications.