Doosan Portable Power’s new Evolution Series portable air compressors feature FlexAir technology, which allows operators to adjust air pressure over a wide psi range. Three of the Evolution series compressors – the XP185-VHP165WDO-T4F, the P185-HP150WDO-T4F, and the P250-MHP185WDO-T4F – feature FlexAir. The fourth model, the C185WDO-T4F, was designed as a low-cost model for the rental industry. “Previously, we used a pneumatic regulating system that mechanically determined the output,” Cody Blyth, air compressor manager, Doosan Portable Power, told Equipment World at World of Concrete this week. “With FlexAir, you can now go to the front of the device and use the control panel to adjust the pressure up and down.” It doesn’t matter whether the machine is running or not, Blythe adds. Cut the machine or open the doors. “This is compared to using a wrench to change the psi, which is a common feature on compressors.” It is also the only compressor under 400 cubic feet on the market that can operate 200 psi at 165 cubic feet per minute,” he says, adding that Doosan built it in part for contractors who blow on short-haul fiber-optic cables. In the sector they now have a 185 cubic feet per minute portable air compressor that they can use to power fiber optic blowers, which typically require 200 psi but less than 200 cubic feet per minute,” Blyth says. They can use a $30,000 machine , compared to $45,000 to $50,000 for larger units.Air compressor operators typically face the challenge of hose line pressure loss.When the hose connecting a pneumatic tool to an air compressor becomes longer, the air pressure at the tool drops.With FlexAir, the operator can Easily increase pressure to compensate for loss, says Doosan.Powered by Doosan’s D24 V2 engines (the C185 has a D18 V2), Evolution Series compressors feature a new and improved fuel system designed for reliable operation on dusty job sites. FlexAir on the XP185, which produces up to 185 cubic feet with pressures ranging from 100 to 200 psi and an optional 4 kW generator to charge portable power tool battery packs. The other two FlexAir models are the P185, which produces up to 185 cubic feet with pressures ranging from 100 to 150 psi, and the P250 which produces up to 250 cubic feet per minute with pressures ranging from 100 to 175 psi.