Compressed Air Quality Matters
Compressed air is the second most widely used power source in industry, but untreated compressed air contains moisture, oil, particles, and microorganisms that can damage equipment, contaminate products, and compromise safety.
SIND provides complete air treatment solutions that meet ISO 8573-1 standards, ensuring clean, dry, reliable compressed air for your specific application.
ISO 8573-1 Air Purity Classes
International standard ISO 8573-1 defines three types of contaminants in compressed air:
Solid Particles
Dust, rust, pipe scale, and other airborne particles
Water
Moisture in vapor and liquid form
Oil
Oil vapor, aerosol, and liquid from lubricated compressors
Each contaminant has purity classes from 0 (strictest) to 6 (least strict). Your required class depends on your application.
Complete Air Treatment Flow
Aftercooler
Cools compressed air from 100°C+ to ambient +10°C, condensing 70% of moisture
Air/Water Separator
Removes condensed water before it enters the system
Receiver Tank
Stores air, dampens pressure pulses, allows additional cooling
Dryer
Refrigerated or desiccant dryer removes remaining moisture
Filters
Multi-stage filtration removes particles, oil, and odors
SIND Air Treatment Products
PureFlow SP Series
Air/Oil Separator
High-efficiency coalescing separator removes bulk liquid and large particles. First stage of treatment.
- Removal efficiency: 99.9%
- Pressure drop: < 0.1 bar
- Flow: 10-500 m³/min
AirGlide AC Series
Coalescing Filter
Multi-layer fiberglass media removes oil aerosols and fine particles to 0.01 micron.
- Residual oil: 0.01 mg/m³
- Filtration: 0.01 μm
- ISO 8573 Class 1 oil
ChillDry CD Series
Refrigerated Air Dryer
Cost-effective moisture removal for general industrial applications. Pressure dew point +3°C.
- Dew point: +3°C PDP
- Energy saving: Variable speed fan
- Refrigerant: R-410A (eco-friendly)
DryTech DT Series
Desiccant Air Dryer
Heat of compression or heated desiccant for critical applications requiring ultra-dry air.
- Dew point: -40°C to -70°C PDP
- Purge air: < 2% (HOC type)
- ISO 8573 Class 2 water
PurePart PF Series
Particulate Filter
Depth-type fibre media removes solid particles down to 1 micron for general protection.
- Removal: 1 μm particles
- Efficiency: 99.9% @ 1μm
- ISO 8573 Class 2 solids
VacPro VP Series
Activated Carbon Filter
Adsorbs oil vapor and odors for food, pharma, and electronics applications.
- Residual oil: 0.003 mg/m³
- ISO 8573 Class 1 oil vapor
- Food-grade approved
Application-Specific Solutions
| Industry | Typical ISO 8573 Class | Recommended Configuration |
|---|---|---|
| General Manufacturing | 3.4.3 | Aftercooler + Separator + ChillDry + PurePart |
| Pneumatic Tools | 4.4.3 | Aftercooler + Separator + ChillDry |
| Paint Spraying | 2.2.2 | Aftercooler + ChillDry + PurePart + AirGlide |
| Food & Beverage | 1.2.1 | Oil-free compressor + DryTech + AirGlide + VacPro |
| Pharmaceutical | 1.1.1 | Oil-free compressor + DryTech + AirGlide + VacPro |
| Electronics | 1.2.1 | Oil-free compressor + DryTech + AirGlide + VacPro |
| Textile | 2.3.2 | Aftercooler + ChillDry + PurePart + AirGlide |
| Cement / Building | 4.5.4 | Aftercooler + Separator + ChillDry |
Need Help Selecting the Right Air Treatment?
SIND engineers can analyse your application requirements and recommend the optimal air treatment configuration to meet your ISO 8573-1 purity class while minimising energy consumption and total cost of ownership.