Automatic Air Pump AP4+

In 1986, QED's AutoPump® originated the automatic air-powered pump concept, leading the industry ever since. AutoPumps were designed specifically to handle difficult conditions reliably and safely, including hydrocarbon (LNAPL and dissolved phase) remediation, solvent (dissolved phase and DNAPL) cleanup, suspended solids, silts, corrosives and high viscosities, along with high temperatures and frequent starts and stops. Air-powered AutoPumps, proven worldwide at thousands of remediation sites, are the No. 1 choice of professionals based on reliability, durability, performance range and technical support.
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Product Description
Product Description
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Designed for wells as small as 2 inches, AutoPumps are air-powered positive displacement pumps activated by an internal float in response to the natural well recharge. Low-maintenance AutoPump® AP4 4.0 & AP4.5 Ultra offers extended uptime for severe landfill and remediation applications.

Key Specifications
  • Proprietary non-stick finishes on float and discharge tube to reduce solids buildup
  • 100% air-powered operation
  • Corrosion-resistant 316-grade stainless steel metallic parts
  • Reliable air control mechanism
  • Temperature ratings up to 250 °F, making it ideal for high temperature applications.
  • ATEX Certified
  • Functions under positive or negative (vacuum) pressure environments.
  • Does not require clean dry air to function properly and pumps particles up to 1/8 inch in diameter.
  • The AP4+ air valves can pass 90 weight oil without fouling.
  • Able to pump products with a specific gravity as low as .72
  • Viscous pumps able to pump liquids up to 7,000 cSt
  • 5 Year Warranty
  • Increase landfill gas extraction rates.
  • Reduced risk of liquid leakage through liners and side slope failures.
  • Lower rates of odors and non-methane organic compounds.
  • Field tests have shown that the AutoPump® AP4 & AP4.5 Ultra will last up to 10 times longer between service events. Tested in the most severe applications.
  • Cleans in up to 50% less time than control group, determined by field tests.
  • Simple disassembly with no fasteners and no cotter pins.
  • AutoPumps require no surface timer-based controllers, bubblers or sensors in the well to operate.
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Automatic Air Pump AP4+ Applications

Oil Refineries and Petrochemical


DOD / DOE Sites

Industrial Sites

Remediation Sites

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