QED Environmental Systems is the leading manufacturer of innovative environmental products.
For over 30 years their expertise has included Pumping Systems, Landfill Products, and Air Strippers.

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High-Clearance AutoPump® AP4.5 Ultra



Low-maintenance, high-performance pump runs for months in wells where traditional pumps fail in days


The new AutoPump® AP4.5 Ultra (Patent Pending) delivers superior performance, running many times longer between service events. A pump installed for field testing needed just 30 minutes to clean after 220,000 minutes (348,965 cycles!) of uninterrupted run time – in a well that had been out of compliance for the previous 3 years, requiring pump cleaning every 3 to 5 days.

With a larger diameter and three times the clearance between the float, casing and discharge tube, the AP4.5 Ultra achieves the same flow rate as the standard AP4 with fewer cycles. This results in less wear per  allon pumped, extending equipment life cycle. Greater clearance also enables the pump to deal with high viscosities, solids content and precipitates in the pumped fluid.

Proprietary non-stick finishes combine with the higher-clearance design to reduce solids buildup, increasing the interval between required service events even further. Pump cleaning is much faster and easier,  ften needing only a water spray and a light wipe. Metallic parts are all 316 grade Stainless Steel, resisting corrosion by the harshest leachates and highest temperatures.

AutoPump AP4 5 Ultra img 3


AutoPump® AP4.5 Ultra

  Standard 4.5" Pump High Pressure 4.5" Pump
 Model  Short AP4.5 Ultra  Short AP4.5 Ultra
 Fluid Inlet  Bottom  Bottom
 Diameter  4.562 in. (115.88 mm) OD  4.562 in. (115.88 mm) OD
 Weight  17.8 lbs. (8.074 kg)  17.8 lbs. (8.074 kg)
 Length  39.3 in. (101.1 cm)  39.3 in. (101.1 cm)
 Pump Volume Cycle 0.45 - 0.55 gal (1.70 - 2.08 L)  0.45 - 0.55 gal (1.70 - 2.08 L)
 Actuation Level 26.7 in. (68 cm)  26.7 in. (68 cm)
 Maximum Flow  13 gpm (49 Lpm)  13 gpm (49 Lpm)
 Maximum Depth 250 ft. (76 m)  380 ft. (116 m)
 Air Pressure 5 - 120 psi (0.4 - 8.4 kg/cm2)  5 - 180 psi (0.4 - 12.655 kg/cm2)
 Air Usage  0.4 - 1.1 scf / gal.
(3.0 - 8.5 liter of air /fluid liter)
 0.4 - 1.1 scf / gal.
(3.0 - 8.5 liter of air /fluid liter)
Minimum Liquid Density  +0.7 SpG (0.7 g/cm3)  +0.7 SpG (0.7 g/cm3)



Standard Construction Materials¹  
Pump Body Fiberglass
Pump Ends 316 Stainless Steel
Internal Components 316 Stainless Steel, Viton, PVDF, Hastelloy-C
Tube & Hose Fittings 316 Stainless Steel
Fitting Type Barbs, Quick Connects or Easy Fittings


Tube & Hose Options  
Tubing Materials Nylon
Sizes - Liquid Discharge 1 in. (25 mm) or 1-1/4 in. (32 mm) OD
Pump Air Supply 1/2 in. (13 mm) OD
Air Exhaust 5/8 in. (16 mm) OD
Hose Material Nitrile
Sizes - Liquid Discharge 3/4 in. (19 mm) or 1 in. (25 mm) ID
Pump Air Supply 3/8 in. (9.5 mm) ID
Air Exhaust 1/2 in. (13 mm) ID


All models are designed for severe conditions.



pdfDownload the AutoPump® AP4.5 Ultra Datasheet4.82 MB

AutoPump AP4 5 Ultra img 1

Site Maintenance Costs

Reduction in pulling pumps for service, “jump starting,” etc. frees technicians for other tasks.

AutoPump AP4 5 Ultra img 2

Pumps from Twice the Depth

Higher air pressure rating allows recovery of landfill leachate or remediation liquids from 380’ (116 m).


Unique construction reduces wear on moving parts, resists clogging by solids, pumps longer without needing cleaning.

AutoPump AP4 5 Ultra img 4
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