The 4400 low-speed mixer from Flygt – a Xylem Brand can gently mix large volumes. Engineered for efficient thrust and bulk flow, low energy consumption and positioning flexibility, the large-diameter unit provides mixing for activated sludge treatment, including aerobic, anoxic and anaerobic zones, and oxidation ditches. The low-speed, gear-driven combination provides efficient, clog-free continuous duty. It has an efficient hydraulically optimized propeller and an easy-access design and installation method for simple maintenance. 855/995-4261; www.flygtus.com.