MB bi-lobe aeration blowers for MBBR, sludge and equalization tanks from Eurus Blower are rated to 15 psig and flows to 3,950 cfm. They have integral-shaft ductile iron impellers, dual-splash lubrication, oversized roller bearings, piston ring air seals, viton lip seals, and low vibration and noise. Packages have integrated intake filter/silencers with washable filter media, heavy-duty base/integrated discharge silencers, vibration dampers, OSHA guard and a V-belt drive with automatic belt tensioner. Options include motors, check valves, safety valves, flexible connectors and sound enclosures. 630/221-8282; www.eurusblower.com.