Oil Free Air Compressors: Best Choice for Pure Air
Oil Free Rotary Screw Compressor
CompAir DH - 100% air purity that meets stringent quality standards
These oil-free air compressor models contain absolutely no oil anywhere in the compressor and have been certified ISO 8573-1 Class Zero (2010) and silicone free.
Water injected, silicone free and oilfree air
Industries such as Electronics, Chemical, Pharmaceutical, Food and Beverage depend upon pure oil-free compressed air as a safe, clean energysource to drive production lines. Sometimes the air comes intodirect contact with the product being created, so it is criticalthat the purity of this air is maintained at all times. You cansee how this is achieved by the DH series in this video - click the design tab, to watch this. The DH Series comprises of the following features:
Single-stage, direct-driven compression element maximises efficiency and minimises maintenance
High quality water injection lubricates, cools and seals the compression process, maximising efficiency
No gearbox means no need for associated oil lubrication
Low bearing loads and low speeds mean sealed-for-life bearings can be used, requiring no oil lubrication
Regulated speed technology available to reduce energy costs
Comprehensive control ensures safe and reliable operation and includes remote communication capability
Fully packaged and silenced enclosure reduces noise and simplifies installation
Oil-Free Air Compressors: Best Choice for Pure Air
Oil-free air compressors are specifically engineered for applications where air purity is critical. In industries like pharmaceuticals, food processing, and electronics, compressed air often comes into direct contact with products—so even tiny oil traces can cause contamination or product loss.
Zero oil contamination risk
Certified ISO 8573-1 Class 0 air quality (highest purity level)
Essential for:
Food & beverage
Pharmaceutical manufacturing
Electronics & cleanrooms
👉 Simply put: No oil = no risk.
Oil-Free Rotary Screw Compressors
A rotary screw compressor uses intermeshing rotors to compress air continuously. In oil-free versions:
No oil is used inside the compression chamber
Advanced engineering ensures sealing and cooling without lubrication
Delivers continuous, stable airflow for industrial operations
These compressors are ideal for 24/7 operations where reliability and consistent pressure are required.
CompAir DH – 100% Air Purity
The CompAir DH series is a leading example of oil-free rotary screw technology designed for absolute air purity.
🔧 Key Features of CompAir DH
100% oil-free design (no oil anywhere in the system)
Certified ISO 8573-1 Class 0 (2010) air quality
Water-injected technology for:
Cooling
Sealing
Lubrication (without oil)
Single-stage, direct-driven system:
Higher efficiency
Lower maintenance
Silicone-free air output (critical for sensitive industries)
⚙️ Performance Highlights
Low operating temperatures (~near-isothermal compression)
Fewer moving parts → improved reliability
Reduced noise due to enclosed design
🏭 Applications of CompAir DH
Used in industries where air purity directly affects product quality:
Pharmaceuticals
Food & beverage production
Chemical processing
Electronics manufacturing
🔄 Two-Stage vs DH Series (Quick Insight)
DH Series → Single-stage, water-injected, compact & efficient
Two-stage oil-free compressors (D/DS/DX series) →
Higher capacity
Better efficiency for large-scale operations
Up to 25.9 m³/min capacity in some models
✅ Conclusion
Oil-free rotary screw compressors are the best choice for pure, contamination-free air, and the CompAir DH series stands out with:
✔ 100% oil-free, Class 0 certified air
✔ Innovative water-injected technology
✔ High efficiency with low maintenance
✔ Reliable performance for critical industries
