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Flux FDM AOD pumps are positive displacement pumps that offer many useful features & benefits for drum, tank and IBC transfer applications. The Flux AOD pump range is a cost-effective family of reliable, air-driven pumps for handling low to high viscosity products. You can use them for a huge range of applications, such as transferring abrasive fluids, liquids containing entrained solids, highly flammable liquids and even liquids with entrained gas.
There is an FDM AOD pump to suit every liquid, even at high temperatures. They are available in the following sizes: 3/8”, 1/2”, 1”, 1 1/2”, 2” and 3” and in several different body materials, with a choice of elastomers for optimal chemical compatibility. We offer conductive ATEX-certified variants in stainless steel, cast iron, aluminium and acetal for use in hazardous Zoned areas.
Flux AOD pumps deliver high discharge pressures, up to 20 bar (FDHM 25 model). In addition, they are self-stalling, meaning these pumps will automatically stop running when air inlet pressure equals pump discharge pressure, unlike other positive displacement pumps that can continue to build discharge pressure when pumping against a closed valve.
*subject to flowability
| FDM Pump | 07 | 10 | 12 | 25 | 40 | 50 | 80 | FDHM 25 |
|---|---|---|---|---|---|---|---|---|
| Max flow rate (l/min) | 20 | 40 | 55 | 178 | 380 | 650 | 1040 | 85 |
| Max delivery pressure (bar) | 8.6 | 7 | 7 | 8 | 8 | 8 | 8 | 20 |
| Max operating pressure (bar) | 3- 8.6 | 7 | 7 | 8 | 8 | 8 | 8 | 7 |
| Max dry suction head (m) | 4.5 | 4 | 3 | 6 | 6 | 4.2 | 4.2 | 3 |
| Max primed suction head (m) | 9.5 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.3 | - |
| Max solid handling size (mm) | 1.6 | 1.6 | 2.4 | 3.2 | 6.4 | 6.4 | 9.5 | 3.2 |
| Viscosity range (mPas) | 1-15000 | 1-15000 | 1-15000 | 1-15000 | 1-15000 | 1-15000 | 1-15000 | 1-15000 |
| Housing materials | Acetal conductive, polypropylene | Polypropylene, PVDF, acetal conductive | Polypopylene, PVDF, stainless steel, aluminium, acetal conductive | Polypropylene, PVDF, stainless steel, aluminium | Aluminium, grey cast iron, polypropylene, PVDF, stainless steel | Polypropylene, PVDF, stainless steel, aluminium, grey cast iron | Stainless steel, aluminium, grey cast iron | Stainless steel |
| Connection (pressure side) | ¾ NPTF | G 3/8 | ½ “ NPT | G1 or 1” Flange | G1 ½ or 1 ½ “ Flange | G2 or 2” Flange | G3 | G1 |
| Connection (suction side) | ¼ NPTF, ¼ | G 3/8 | ½ “ NPT | G1 or 1” Flange | G1 ½ or 1 ½ “ Flange | G2 or 2” Flange | G3 | G1 |
*Performance varies based on pump model, operating pressure, and fluid properties.
Please call us on 01202 823304 or email sales@flux-pumps.co.uk for assistance
To select the correct AOD pump, firstly consider that the ideal operating condition for maximum diaphragm life is between 40-60% of the maximum output flow. This ensures the pump is not running too quickly, thus causing undue stress on the flexible diaphragms. Also consider that performance charts represent tests with water under flooded suction conditions, i.e., liquid being pushed to the pump inlet by gravity and atmospheric pressure. When suction lifting fluids from a level below the pump inlet, performance will decrease roughly in proportion to lift height. See technical data for further information.
Pumping higher viscosity fluids will also reduce the delivery rate. Performance is limited by liquid flowability. This is a particular consideration when handling high viscosity, adhesive and/or Newtonian materials. A large AOD pump may be unsuitable for suction lifting such materials from drums or IBC’s. As a general rule, they are limited to a maximum viscosity of 15,000 mPas, however larger pumps can work with higher viscosity materials, assuming the media is thixotropic (shear-thinning), e.g. tomato paste.
Importantly, consider a progressive cavity barrel pump, such as the Flux Viscopower F 500 series, as a more energy-efficient alternative to a large AOD pump. This is because the Viscopower liquid inlet is immersed directly in the fluid, meaning the pump can handle adhesive materials and far higher viscosities (typically up to 100,000 mPas), by eliminating the need for suction lift.
Flux AOD pumps are powered by compressed air. The pump housing contains two parallel, flexible diaphragms, which separate the compressed air side of the pump from the liquid side. Pressured air is directed to a chamber behind each diaphragm in turn. The diaphragm flexes, pressurising the liquid on the other side of the diaphragm and forcing it out of the pump chamber. While this is happening, the other diaphragm is de-pressurising and sucking liquid into the inlet chamber. Furthermore, each liquid chamber has an inlet and outlet check valve to prevent back-flow. The operating cycle is repeated, consequently creating a constant flow through the pump, as the ball valves open and close in turn. Flow direction is always in through the bottom inlet port and out through the top discharge port.
FDM series AOD pumps can handle solids up to 1.6 to 9.5 mm in size, depending on the model.
Get in touch with our sales team today
If you're looking for a reliable and versatile pumping solution, our Flux FDM AOD pumps offer exceptional performance for a variety of applications. Whether you need to handle viscous, abrasive, or flammable media, our pumps are designed to meet your needs. For more information or to discuss your specific requirements, don’t hesitate to contact our sales team. We’re here to help you find the perfect pump solution tailored to your business. Reach out today!
