The Atlas Copco booth featured many blower technologies but my visit focused on their ZS Series gear-box driven, rotary screw blowers designed for industrial and aeration blower applications. Flow ranges are from 160 to 5,300 cfm at pressures from 4.4 to 22 psig. Blower Business Line VP, Travis McGarrah, explained the gear-box drive is an important feature as it improves energy efficiency and eliminates maintenance. Another important feature is a pressurized oil circuit with a filter and oil cooler. He also pointed out a new OGP+ Series oxygen generator, which when combined with a blower, provides almost double the flow of oxygen compared to a traditional compressed air supply.