The JAM 40 septic aerator is a proven aerator for aerobic septic systems. The JAM 40 is designed for aerobic septic systems from 400-500 gallons per day with 2 people . It uses a rare earth magnet to draw less electricity and produce less heat. The Jam 40 is top of its class pulling 0.60 amps to produce 40 L.P.M Liters Per Minute. Its built using high quality full copper coil windings unlike some other manufactures units. Over two years was spent studying EPDM for the diagrams so that they will last years under the designed operating pressure. Benefits of Ater pump is that new aerators come with a extra set of diaphragms so when the unit does go down you have the parts to fix it.