GL-Series Integrally Geared Single Stage Turbo Blower Made In USA and more than 10 frame sizes to choose from. Well known for high efficiency and reliability, this technology has been a standard across many industries. • 50-13,000 hp, 2-35 PSI, 500-170,000 SCFM • Great flow range from 100% to 40% of design flow • Variable inlet and discharge guide vanes to adjust flow • Force Lubricated Tilt-Pad bearings for nearly unlimited life • API standards 617, 672 and 614