Description
ELGi OF Series Oil-Free Screw Air Compressors
100% Oil-Free (Class 0) • Designed for Sensitive Industries • Reliable Performance with Low Operating Cost
ELGi OF series oil-free screw air compressors are built for sensitive industrial processes where compressed air quality is critical and oil carryover is not acceptable.
Key Features
- Designed for industries where oil vapor contamination is not acceptable in the manufacturing process.
- Oil-free compressed air range positioned for reliable performance at low operational cost.
- η‑V rotor design intended to reduce pressure losses and improve stage efficiency for a more efficient compressed air system.
- Rotor and housing coatings designed to resist corrosion and withstand high temperatures for long-term performance.
- Cupronickel coolers with a water-in-tube system designed for heat transfer and thermal efficiency (model dependent).
Specifications
| MPN | OF Series |
|---|---|
| Series | ELGi OF Series |
| Compressor Type | Oil-Free Rotary Screw |
| Power Range | 60–600 HP (per brochure) |
| Air Quality | Class 0 (per brochure) |
Benefits
- Helps protect product quality in food & beverage, pharmaceutical, textile, electronics, and other sensitive applications.
- Supports environmental and quality initiatives by reducing contamination risk while maintaining performance.
- Designed with uptime-focused component selection for rugged operation across wider ambient conditions.
Installation & Application Notes
- Oil-free compression does not eliminate the need for moisture control—select dryers/filters based on point-of-use dew point and particulate requirements.
- Confirm site cooling water availability and quality if selecting a water-cooled configuration.
- Validate airflow demand (CFM) at required pressure and plan receiver capacity accordingly.
Frequently Asked Questions
ELGi OF Series Oil-Free Screw Air Compressors
▶️ Question: What is “Class 0” compressed air and when is it needed?
Answer: Class 0 represents the highest oil purity expectation under ISO 8573-1 for oil content. It’s commonly specified when oil contamination can affect product quality, compliance, or process reliability.
▶️ Question: Do I need filtration and drying with an oil-free screw compressor?
Answer: Often, yes. Most systems still need particulate filtration and moisture control to protect equipment and meet dew point requirements at the point of use.
▶️ Question: Which industries typically use oil-free compressed air?
Answer: Oil-free air is common in food & beverage, pharmaceutical, textile, electronics, and other manufacturing where air quality is used directly in the process.
▶️ Question: What should I consider for cooling and installation?
Answer: Confirm ventilation and service access. If you select a water-cooled package, verify cooling water supply, temperature, and water quality requirements.
▶️ Question: How do I size an oil-free compressor system?
Answer: Size based on peak airflow demand at required pressure, then confirm receiver capacity and downstream treatment so the system supports your process under real operating conditions.
