Reliable Workhorses: The Importance of Maintenance for AODD Pumps

Reliable Workhorses: The Importance of Maintenance for AODD Pumps

Diaphragm pumps that are operated by air can be maintained easily, providing a cost-effective solution for numerous applications. The pumps are self-priming and sealed. they can maintain a variable pressure for expulsion without requiring complex process.

The diaphragm of the elastomer diaphragm is two chambers of pumping, resulting in tensions that are either negative or positive that can be used to transfer fluid. Fluid is sucked through during discharge, and pushed away during suction. This loop is repeated over and over.

Fluid Transfer Innovation

Air operated double diaphragm pumps (AODD) are an incredibly versatile pumping device that allows for the transfer of a wide range of liquids and viscosities. They’re safer as compared to other pumps since they operate without electrical power and can be designed for ATEX zones, hygiene applications and 3A certifications.

The two diaphragms are linked by a central portion which houses the air valve. The air valve directs air that is compressed towards the rear of diaphragm 1 which causes it to produce an upward pressure, pushing the liquid away from the pump. At the same time diaphragm number 2 is performing suction stroke. This is accomplished by air pressure pushing water to suction ball valve. The flow is controlled by changing the pump’s speed. This pumping motion is similar to the breathing inhalation concept that humans use to breathe.

Versatile Pumping Solution

The fact that they are positive displacement AODD pumps makes sure that they are able to deal with liquids within the entire spectrum of industries. As long as there is the possibility of having access to an air compressed supply, the pump is able to be placed wherever required.

AODD pumps do not have seals and therefore there’s no requirement for elaborate systems for controlling flow rates or pressures. Diaphragm elastomers are chosen to match the flow, with various durometers in stock to give varying degrees of resistance to chemical as well as environments. The design and shape of the diaphragm can also impact flow and pressure levels in addition to the duration. The choice of materials are crucial to the successful operation. The right choice of material for your application will help in reducing overall operational costs.


Air Operated Diaphragm Pumps (AODD) operate by compressing air. They eliminate the possibility that electricity could contact a device. They can be utilized in situations where it’s unsafe or unsuitable to utilize electric pumps as they do not emit flashing sparks, leaks, or short circuits.

They’re ideal to transport liquids that are shear bom mang khi nen sensitive, and are often ideal for situations where the product has to be pumped from below the surface. They are also very lightweight and can be arranged smaller to make them more compact.

Wetted construction materials may vary, with a choice among the 316L Stainless Steel, Neoprene, Viton or PTFE for the diaphragms as well as balls. Based on the purpose the right choice of material could be required to ensure optimal chemical compatibility. The pumps are safe in their own way and may be ATEX approved for use in hazardous environments.

Pump Applications Across Industries

Pumps operated with air can be utilized to transfer different liquids from high viscosity chemicals through into fuel and food. They can deal with solids up to 40% in weight. They can be adjusted to fit the flow rate and pressure needs for every installation.

The suction cycle occurs when compressed air flows into one of the internal chambers. It then pushes the opposite diaphragm towards the liquid chamber and lifts lower valve balls to draw in the fluid. When this has been completed, the air is switched off and the cycle continues, switching between the two diaphragms resulting in an action of double-acting pumping.

Typically, these pumps are fitted with stroke counters for integrating into PLC systems to track pump performance and control maintenance schedules. These pumps can also come with pulsation dampeners inside to reduce vibration and water hammer.

Maintenance and Reliability

In contrast to most pumps, these air-operated double diaphragm pump (AODD) can operate dry and not require electricity. These are known as the “workhorses” of industrial pumps. They must however be taken care of properly to guarantee their longevity and durability.

Routine inspections will help you avoid regular problems, such as the diaphragm being damaged or a valve that could drastically reduce the pump’s service life. The material your diaphragm is made from (EPDM rubber or PTFE) will affect its lifespan as well as its stiffness.

Verifying the positions of valves that are manually controlled for suction and discharge throughout maintenance could be a way to avoid issues, such as blockage of the pump. Insufficient lubrication or improper mounting of the pump could cause a variety of other troubles.