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Atlas Copco ZS4VSD+ Oil Free Screw Blower Low Pressure Class 0 Industrial Air Blower
| Place of Origin | China，jiangsu，wuxi |
| Brand Name | Atlas Copco |
| Certification | CE |
| Model Number | ZS 4 VSD+ |
Oil Free Screw Blower
,Class 0 Industrial Air Blower
,Low Pressure Screw Blower
The Atlas Copco ZS series of oil-free screw blowers delivers 100 to 3,264 l/s at working pressures from -0.65 to 1.5 bar. Positioned between lobe and turbo technology, the ZS4VSD+ is engineered for aeration basins, fermenters, and pneumatic conveying lines that depend on clean, low-pressure air.
Because the rotors in a ZS blower never make contact, the delivered air remains oil-free to ISO 8573-1 CLASS 0. The integrated variable speed drive (VSD) in the ZS 4 trims output to actual demand — every 1 bar held above demand otherwise wastes 7 percent of the energy consumed. IE4 and IE5 motors keep airflow stable under constant load while further reducing specific energy requirement, and refined acoustics with internal damping bring noise levels down to 75 dB.
- 100% oil-free, Class 0 certified air — non-contacting rotors eliminate oil carryover, meeting ISO 8573-1 CLASS 0 for sensitive processes.
- Variable speed drive (VSD) — matches blower output to real-time demand, avoiding the energy waste of blow-off valve regulation.
- IE4 / IE5 high-efficiency motors — maintain stable airflow under constant load with lower specific energy consumption.
- Low noise operation — refined acoustics and internal damping reduce sound levels to 75 dB.
- Proven screw element reliability — genuine Atlas Copco spare parts and certified service keep the screw element warranty valid for up to 5 years or 60,000 hours.
- Wide operating envelope — 100 to 3,264 l/s flow range at -0.65 to 1.5 bar working pressure.
| Technology | Oil-free screw blower (between lobe and turbo technology) |
|---|---|
| Flow Range | 100 – 3,264 l/s |
| Working Pressure | -0.65 to 1.5 bar |
| Air Quality | Oil-free to ISO 8573-1 CLASS 0 |
| Motor Efficiency | IE4 / IE5 |
| Speed Control | Variable Speed Drive (VSD) |
| Noise Level | 75 dB |
| Warranty | Up to 5 years or 60,000 hours (screw element, with genuine parts & certified service) |
As one of the most professional Atlas Copco suppliers in China, we have focused exclusively on 100% genuine Atlas Copco products for more than 19 years. Our team includes professional engineers providing 24-hour technical support and on-site service. We operate a warehouse of over 4,000 square meters with 80% of parts in stock for quick delivery. First-hand sourcing, competitive pricing, and a dedicated service team are what make us a trusted Atlas Copco supplier.
Internal screw compression reduces air volume progressively within rotor pockets, avoiding the turbulent thermodynamic shock and pressure pulsations of external Roots compression.
It matches blower speed directly to real-time process demand, eliminating the electrical energy wasted by venting surplus air through blow-off valves.
It prevents lubricating oil mist from agglomerating bulk powders, clogging pipeline bends, and contaminating sensitive raw material batches.
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