Technology Comparison
By ZIQI Engineering Team ? Pure Air Solutions
For industries like Pharmaceuticals, Food & Beverage, and Electronics, oil contamination is not an option. You need Class 0 oil-free air. But when choosing a compressor, you face two main technologies: Dry Oil-Free Screw (Traditional) and Water-Lubricated Screw (Modern).
The difference isn't just in the name—it's in the temperature, efficiency, and maintenance costs. Let's break it down.
Dry Screw = High Heat
Dry compressors use air gaps and chemical coatings (Teflon) to seal rotors. Without liquid cooling, compression temperatures can soar above 180°C. This heat stresses components and degrades efficiency over time.
Water-Lube = Cool Efficiency
ZIQI OFW compressors inject pure water into the chamber. Water absorbs heat instantly, keeping the temperature below 45°C (Isothermal Compression). This guarantees near-perfect efficiency and long life.
| Feature | Dry Oil-Free Screw | ZIQI Water-Lubricated (OFW) |
|---|---|---|
| Sealing Medium | None (Air Gap + Coating) | Pure Water Film |
| Operating Temp | High (160°C - 200°C) | Low (< 45°C) |
| Rotor Material | Coated Carbon Steel (Peeling Risk) | Stainless Steel + Polymer |
| Rotational Speed | Very High (10k-20k RPM) | Low (approx. 2960 RPM) |
| Maintenance | High (Expensive Airend Overhaul) | Low (Only Consumables) |
| Air Quality | Class 0 | Class 0 + Dust Washing |
Many people fear water in compressors, but in the ZIQI OFW series, water is your best friend. Here is the science behind it:
If you want a machine that runs cooler, lasts longer, and costs less to maintain, the ZIQI Water-Lubricated Screw Compressor is the superior choice over traditional dry types. It delivers the same Class 0 purity but with the reliability of stainless steel.
Contact us for a free consultation on ZIQI OFW Series.Get a Quote Now
