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We have the best diaphragm pump for your application

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Global Pumps stocks and offers a complete range of air operated diaphragm pumps in different materials for pumping and transferring liquids and chemicals. These air operated diaphragm pumps are also known as AODD or AOD Pumps.

Features of Air Operated Diaphragm Pumps:
  • Self-priming, dry running
  • Rugged construction
  • Metallic and non metallic construction
  • Various elastomer options
  • Anti-freeze/anti-stall and lube free
  • Externally serviceable air distribution systems

As one of the most common and versatile portable pumps on the market, AOD pumps are used predominantly to transfer liquids for:

  • Manufacturing
  • Water & wastewater
  • Chemical transfer
  • Food & beverage
  • Mining

AOD pumps are also incredibly easy to maintain in any production environment.

View complete range of curves and data sheets on the Verderair range.

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General Industry & Manufacturing
  • Drum and container transfer
  • Dosing
  • Ink
  • Texture coating
  • Paper pulp
  • General transfer
Water & Wastewater
  • Water and dewatering
  • General transfer
  • Building services
  • General transfer
  • Acids and chemicals
  • Oils and hydrocarbons
  • Drum and container transfer
  • Dosing
  • Acid bath circulation
  • Flammable liquid transfer
  • Drum transfer
  • CIP chemicals
  • Sampling
  • Drum decanting
  • General transfer
Food & Beverage
  • Drum and container transfer
  • Trade waste
  • Sanitary
  • Transfer
  • Acids and chemicals
  • Oils and hydrocarbons
  • Tanker unloading
  • Flammable liquid transfer
  • Water and dewatering
  • General transfer


AOD Pumping Oil, Sand & Water


VerderAir VA80 Air operated double diaphragm pump in the Oil and Gas Industry. Read more...




How to read an Air Operated Diaphragm Pump curve?

We often had this question asked, so we created a video to explain how to read and determine the values. You can watch the video here: How to read an Air Operated Diaphragm Pump curve.

Where can these pumps be used?

Air Operated Diaphragm Pumps can be used in a range of applications. They can be used in chemical processing and to pump Paint and other viscous liquids. There are hygienic/FDA approved versions for the food and beverage industry and are a great option for dewatering in the mining industry and can even be used to pump flammable or hazardous liquids.

What are the main Features of Air Operated Diaphragm Pumps?
  • They are self priming
  • They can run dry without damage
  • They are available in many different materials for pumping many different liquids and chemicals
  • These diaphragm pumps are anti freezing. Meaning that they are non stalling and are lube free
  • They are also leak free
How many sizes and materials are available?

There are about seven different sizes available and come in many different materials of construction such as different types of plastics and metals.

How Do I Know What Type Of Air Operated Diaphragm Pump To Buy?

You must match your requirements to the pump’s characteristics. Here are the five important considerations for choosing an AODD pump:

Fluid –The makeup of your process fluid is crucial to the choice of pump. Does it have special chemical or corrosive requirements? Is it clean or does it contain particles (slurry)?
Viscosity – The viscosity of your process fluid is also important. More viscous fluids require more robust pumps to move them.
Flow rate – You need to know how much liquid you need to move per unit time in order to choose both the correct size pump and the correct size of piping.
Pressure – The pressure will also be a major factor, one that is intertwined with the flow rate, in choosing an appropriate pump. Refer to your pump’s “pump curve” graph to help determine the relationship between flow and pressure.
Temperature – Your choice of pump necessarily need to depend on the temperature of the liquid being pumped.

What Kind Of Fluid Does A Diaphragm Pump Transfer?

Any kind. Examples include water, acids and lubricants. AODD pumps will handle viscous fluids as long as the viscosity has been taken into account when choosing the pump and designing the system, as some highly viscous fluids require large bore piping to be adequately pumped.

Are There Specific Considerations For Plastic Diaphragm Pumps?

Because they are plastic, they can change shape slightly over time. As will be seen in the answer to the next question, plastic AODD pumps require more frequent inspection to make sure that the bolts holding the pump casing, haven’t become loose. The only other consideration for a plastic pump is to ensure that that fluid being pumped is compatible with the pump’s plastic/material.

Why do air operated diaphragm pumps freeze?

Although Verderair pumps are anti-freeze, we have created an article here explaining why air operated diaphragm pumps freeze

What Are The Key Factors For Diaphragm Pump Maintenance?

The good news is that AODD pumps are comparatively easy to maintain. Importantly, and like every other pump, a regularly scheduled maintenance is crucial. You want to monitor things over time, to prevent mishaps before they happen. There are essentially 4 main things to keep an eye on during the life of an AODD pump. First, the quality of the air used to operate the pump. Air can come in many different qualities with various amounts of water. Impurities are removed by an in-line air-filter. Making sure that this is operating and doesn’t become clogged with debris from poor quality air is important to prevent these particles from reaching the pump and causing premature wear on the pump diaphragms. Second, examine the pump’s elastomers (diaphragms) routinely for signs of wear – replace these if necessary. Third, Make sure you frequently check the fluid inlet and outlet of your pump. If either of these becomes clogged, it can lead to premature failure of the pump. Last, especially with pumps constructed of plastic, which can change shape over time, becoming compressed, make sure that you check the torque settings of the pump’s bolts.

Where do you deliver and what is your estimated shipping times?

At Global Pumps, we understand how important it is for you to receive your order as quickly as possible. That's why we strive to provide speedy delivery to your door, no matter where you are located across Australia.

Below is a guideline of how long it takes to ship our products to some of Australia's major cities. Of course, we can also deliver elsewhere around the nation, so if your location isn't mentioned don't worry, just talk to the team at Global Pumps!

Locations Shipping Time Range
Melbourne 1-2 Days
Sydney 2-3 Days
Brisbane 2-4 Days
Perth 2-4 Days
Adelaide 1 Day
Kalgoorlie 3-5 Days
Mt Isa 3-5 Days


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