Flint & Walling ES05S Shallow Well Jet Pump, 1/2 HPCast iron, dual voltage. Includes s. w. Ejector, 20 40 square D pressure switch. Copper windings & double ball bearings. 1 2 HP Shallow well jet pump Cast iron, dual voltage Includes s. w. Ejector, 20 40 square D pressure switch Copper windings & double ball bearings 0' @ 40 PSI = 678 GPH, 5' @ 40 PSI = 570 GPH, 15' @ 40 PSI = 468 GPH, 25' @ 40 PSI = 312 GPH. WARNING: Cancer and Reproductive Harm www. P65Warnings. ca. gov For a list of chemicals,