Hydraulic submersible pumps from Griffin Pump & Equipment are available in axial flow and trash-handling models. They range from 4 to 24 inches and are designed to handle water volumes up to 20,000 gpm and heads up to 140 feet. The impellers can handle solids up to 3 inches. They fit in standard manholes for sewer bypass and for moving liquids with heavy trash and solids content, such as sludge, trash, raw sewage, clear liquid and industrial effluent. 866/770-8100; www.griffinpump.com.