AIR/HYDRAULIC PIPE BENDER 1/2 -3" 16TON.WITH AIR HYDRAULIC OR MANUAL.16 TON JACK AIR PRESSURE 80 TO 120PSI.Air Hydraulic Pipe Bender, capable of bending pipes from 1/2 to 3 inches in diameter, with a maximum tonnage of 16 tons. The unit can be operated using air hydraulic or manual pressure, and features an adjustable air pressure range of 80-120 PSI.