Atlas Copco GA90 Oil Injected Screw Air Compressor The Atlas Copco GA90 is a 90 kW oil injected rotary screw air compressor engineered for continuous duty industrial compressed air supply. Positioned in the upper mid-range of the GA series, this compressor is extensively utilized in manufacturing, automotive, metalworking, and process industries where consistent high-volume compressed air is essential for production operations across extended shifts. Advanced Compression