Ambient air, the source of compressed air, inherently contains contaminants such as moisture, microscopic particles, and trace oils. The compression process amplifies these impurities, concentrating them within the reduced air volume. For instance, compressing seven cubic meters of ambient air into one cubic meter results in a sevenfold increase in contaminants like humidity, fine particulates, and oil residues. In applications where air quality is critical, such as providing breathing air, these elevated contaminant levels pose significant health risks. Therefore, treating compressed air to remove harmful impurities is essential to ensure it is clean and dry when delivered through masks or hoods.

Pneumatech's BA breathing air purifiers are engineered to meet and surpass stringent international standards, including EN12021 and the European Pharmacopeia. These purifiers ensure compliance with strict air quality specifications, providing certified breathing air even in environments with polluted intake air.

Our breathing air systems feature a specialized seven-stage filtration process designed to deliver unparalleled compressed air purity:​

1. Water separator: Removes liquid water.​
2. Fine filter: Eliminates oil and water aerosols.​
3. Super fine filter: Further reduces oil and water aerosols.​
4. Adsorption dryer: Targets water vapor and carbon dioxide.​
5. Activated carbon filter: Removes gaseous impurities.​
6. Catalyst: Oxidizes carbon monoxide to carbon dioxide.​
7. Bacteria filter: Captures bacteria and fine dust particles.​

A vital part of any breathing air purifier system is the adsorption dryer — a unit that uses desiccant materials to draw moisture from compressed air. These dryers typically operate in twin tower configurations, where one tower handles the drying while the other regenerates the saturated desiccant. This continuous cycle ensures a steady flow of dry, purified air — essential in breathing air applications where consistency and safety are non-negotiable.
 

Pneumatech’s breathing air purifiers incorporate high-efficiency adsorption dryers that are engineered for reliable, round-the-clock performance. Carefully selected desiccants remove water vapour with precision, while the compact design and low noise levels allow flexible installation, even in environments sensitive to sound. Fast-switching valves further enhance the system’s efficiency by minimising pressure drop and improving purge air expansion during regeneration — which helps reduce purge air consumption without compromising performance.