gas and producing ultra-fine, 30 micron bubbles. They provide an efficient air saturation system for waste activated sludge thickening and applications or systems requiring gas charging of liquids. System installations are designed for new and retrofitted dissolved air flotation applications. They can be integrated into many OEM DAF units, can achieve separation efficiencies greater than 95%, with enhanced float solids concentration at 3 to 8WT%. Additional benefits include; costs reductions up to 40% over previous DAF systems. Shanley Pump & Equipment, Arlington Heights, IL, 847-439-9200, www.shanleypump.com