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CLEAN ENVIRONMENT ENGINEERS, INC. SOS AUTO PUMP FUNCTION: ' This system removes water from wells at up to 10 gallons (37.5 liters) per minute. It can be used without a control box to maintain continuous pumping from a well and it will maintain a predetermined level in the well without external sensors. The Auto Pump ' can be used as either a Top-Loading Pump to take in floating oil and water or as a Bottom-Loading Pump to take in and remove only water. Tqe pump senses when it is full and when it is empty. It regulates the pressurized air to itself, to push the fluid out, by ' admitting pressurized air or to fill itself again by exhausting the pressurized air. The Auto Pump will match the fluid influx into the well up to its maximum flow rate. It can ' turn "on and off" millions of times without damage to itself. Thus, it is very useful in low flow rate situations where the fluid in the wells is removed quickly and the pump must then lie dormant until the water level again rises. The pump can pass silt and sand up tto 0.125" (3.2 mm) diameter. ' METHOD OF OPERATION: Fluid enters the cylindrical pump body through a check valve. After the fluid rises to within about 6" (15 cm) from the top of the pump, a pneumatic valve is shifted to allow pressurized air to enter. The fluid in the pump is thus pushed out of the pump through another check valve. As the fluid is pushed out of the pump by the air pressure and the ' level nears the bottom of the cylindrical chamber, the pneumatic valve is shifted back and the pressurized air is exhausted from the pump. The pump then fills again and the cycle repeats as long as fluid is present. ' The pump can be steam cleaned without damage. ' FLOW RATE: AP-4: 0-7 gallons per minute (26.5 liters per minute) AP-6 0-10 gallons per minute (37.5 liters per minute) SIZE: ' AP-4: 3.5" (8.9 cm) diameter, 50" (152 cm) in length AP-6 5.5" (14 cm) diameter, 66" (168 cm) in length ' WEIGHT: AP-4: 28 pounds (12.7 kg) AP-6: 90 pounds (40.9 kg) 1 MATERIALS OF CONSTRUCTION: Stainless Steel, Brass, Delrin, Polypropylene, Urethane, Viton and FRP