The Hi-Vac Corp. Aquatech Jumbo Combo has a 5,250 cfm, 27-inch Hg blower and is suited for large-diameter pipe cleaning jobs. The water pump is available in large-capacity 120 to 150 gpm, and the unit also features boilerplate steel debris tanks, polygraphite water tanks and a horizontal transfer case drive. 800/752-2400; www.hi-vac.com.