AODD Pumps

Kelair Pumps are one of the leading Australian suppliers of AODD pumps, with over 45 years experience in the selection, supply and servicing of pumps.

Why use Air operated double diaphragm (AODD) pumps?

Air-operated double-diaphragm pumps, also known as AODD pumps are positive displacement pumps mainly used for transferring a wide range of media—from H20 to highly solid-laden liquids via compressed air and diaphragms which move the fluids through the pumping system. An alternative to centrifugal pumps, AODD pumps contain no sealing or lubricating oils within the pumping head, meaning there is no chance of oil vapor leakage or contamination of the handled media. For this reason, air operated diaphragm pumps are used in industries such as oil and gas, food processing, chemical, paint, electronics, and pharmaceutical. 

The uninterrupted supply of air inside the pump results in the repetitive back-and-forth action of two flexible diaphragms connected to a rod. This constant motion drives liquid out of one chamber for discharge while filling the other chamber.

The key benefits of using AODD pumps include:

• Versatile design and function, able to handle most media types.
• Self-Priming.
• Simple to clean and maintain.
• Low Consumption of air saving on operating costs.
• Reliable performance.
• Can run dry for short periods.

For more reading: What is a diaphragm pump, how does it work and when do you use one?

How do you maintain an AODD pump?

Air operated double-diaphragm (AODD) pumps are known for reliability, but like any piece of equipment, they need routine maintenance and repair to ensure long-term durability. The correct maintenance is essential for ensuring the efficient and reliable working of a diaphragm pump.

Key factors to consider for preventative maintenance are:

• Diaphragm lifetime
• Compressed air quality
• Flushing of pumps after use.

Below are some good points on how to maintain a diaphragm pump:

Check the diaphragms regularly: Diaphragms are the most critical component of a diaphragm pump, and they can wear out over time. Check them regularly for signs of wear or damage and replace them as needed.

Inspect valves: Valves are also one of the important components of a diaphragm pump. Inspect them regularly for signs of wear, corrosion, or other damage. Replace any faulty valves asap!

Check the fluid inlet and outlet: Check the fluid inlet and outlet regularly for signs of clogs or other obstructions. Clean them out as needed to ensure proper fluid flow.

Lubricate moving parts: Diaphragm pumps have several moving parts, such as the air motor and the valve mechanism. Lubricate these parts regularly to prevent friction and wear.

Check air supply: Diaphragm pumps rely on compressed air to operate. Check the air supply regularly to ensure that the pump is receiving adequate air pressure and volume.

Inspect fittings and connections: Check the fittings and connections on the pump regularly for signs of leaks or damage. Tighten or replace any faulty fittings as needed.

Clean the pump: Clean the pump regularly to prevent the build-up of dirt, debris, or other contaminants that can interfere with the pump's performance.

For more reading: FAQ: Step by step guide to maintain your AODD Pump.

Where to use an AODD Pump

Air-operated double diaphragm (AODD) pumps are used in a wide range of industries because of their versatility, reliability, and ability to handle various fluids. These are just some of the industries that trust Kelair Pumps to supply them AODD pumps to transfer liquids and viscous fluids:

• Automotive
• Ceramics
• Chemical
  • When a diaphragm fails on a typical AODD pump the fluid can end up everywhere. Kelair has the solution ideal for highly corrosive and hazardous chemical fluid requirements. Read more here
• Coatings
• Construction
• Food processing
  • Blood is a very difficult liquid to pump. Experience has shown that an air-powered diaphragm pump is the best option when pumping blood at abattoirs. Read more here
• Marine
• Mining
  • Can a plastic pump handle harsh mine dewatering? Read about it here
• Oil and gas
  • A major gas company in Sydney had some major problems with an existing pump. The client was pumping lime slurry with a centrifugal pump, which was having major mechanical failures. Read more here
• Pharmaceutical
• Pulp and paper
  • When a major pump and paper mill in Victoria found their process attacked the suction and discharge manifolds of their pumps and seriously corroded the material, they called in Kelair for a solution. Read more here
• Wastewater

The full range of Sandpiper pumps

As an authorised distributor of Sandpiper pumps in Australia, Kelair provides customers with access to high-quality AODD pumps that are known for their reliability, durability, and versatility. This ensures customers have access to a trusted brand that offers reliable and efficient fluid transfer solutions. Sandpiper pumps are designed to handle a wide range of fluids, including corrosive, abrasive, and viscous liquids, making them suitable for diverse applications in industries such as:

• Automotive

• Ceramics

• Chemical

• Coatings

• Construction

• Food processing

• Marine

• Mining

• Oil and gas

• Pharmaceutical

• Pulp and paper

• And wastewater

Today, Sandpiper pumps are regarded as reliable workhorses in the fluid handling industry. They are trusted by professionals worldwide for their durability, versatility, and ability to handle challenging fluids and operating conditions.

The unique selling point of a Sandpiper AODD pump is its straightforward design. There is no need for sophisticated controllers and cleaning is easy. In fact, it can go through a CIP process (Cleaning-in-Place) where it can be sanitized without disassembly. An additional characteristic of an AODD pump is its efficient handling of solids without damaging or compromising the quality of the product. Air-operated double diaphragm (AODD) pumps are used in a wide range of industries because of their versatility, reliability, and ability to handle various fluids.

Kelair Pumps provides expert advice, technical support, and after-sales service. Their knowledgeable team can assist customers in selecting the right Sandpiper pump for their needs, offering guidance on pump specifications, installation, maintenance, and troubleshooting.

To view our full range please visit: Sandpiper

Are you after an air operated double diaphragm pump from one of the world’s leading manufacturers?