Diaphragm pumps that are operated by air are simple to keep in service and provide a low-cost solution for numerous applications. The pumps are self-priming and sealed. they can maintain a variable pressure for expulsion without requiring complex operation.

The diaphragm of the elastomer diaphragm is two pumping chambers creating tensions that are either negative or positive that could be used to push fluid around – pulled into the discharge area and then pushed away during suction. The cycle repeats continuously.

Fluid Transfer Innovation

Air operated double diaphragm pumps (AODD) are a versatile pumping device that allows for the transfer of many different liquids and viscosities. They’re safer over other types of pumps because they are not powered by electricity and can be specified for ATEX zones, Hygienic uses and 3A accreditations.

The diaphragms have been joined with a central area that is home to the air valve. The valve is designed to direct 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. In addition, diaphragm two is performing a suction stroke. The process is carried out by air pressure pushing the liquid into the suction valve. Flow is adjusted by adjusting the pump speed. The pumping movement is comparable to the breathing inhalation notion of human breathing.

Versatile Pumping Solution

The fact that they are positive displacement AODD pumps makes sure the ability to manage liquids throughout a vast range of industries. If there’s access to a compressed air supply the pump can be installed wherever it is necessary.

AODD pumps do not require sealing they do not need for complex systems for controlling flow rates or pressures. Diaphragm elastomers are selected to suit the flow, with various durometers available to provide varying degrees of resistance to chemical and environments. The form and design of the diaphragm is also a factor in flow and pressure levels in addition to the duration. The choice of materials will determine the success of your process. Choosing the right material for your project will assist to reduce overall operating costs.


Air Operated Diaphragm Pumps (AODD) run on compressed gia bom mang khi nen air. This eliminates the danger of electrical currents touching a product. They can be utilized in situations where it’s unsafe or impossible to use electric pumps as they do not release sparks, flashes, the leakage or short circuits.

They are perfect for the transport of shear-sensitive liquids which is preferred for use where the product has to be delivered from beneath the surface. These pumps are also mobile and are able to be created smaller to make them more compact.

The construction materials wetted can be different, ranging from a choice between an 316L Stainless Steel, Neoprene, Viton or PTFE for diaphragms as well as balls. Depending on the application an appropriate choice of materials is required for optimal chemical compatibility. The pumps are safe in their own way and could be ATEX approved for use in hazardous areas.

Pump Applications Across Industries

Air operated diaphragm pumps can be utilized to transfer different liquids in viscosity from chemical products to into fuel and food. They can deal with solids up to 40% weight, and are adjustable to match flows and pressures in each location.

The suction cycle occurs when compressed air flows into one of the inner chambers, which then pushes one diaphragm in the other direction towards the liquid chamber and lifts the valve’s bottom ball to draw in the fluid. After this process is completed, the valve switches to air and the process repeats, alternating between the two diaphragms resulting in an action of double-acting pumping.

Typically, these pumps are fitted with the ability to integrate stroke counters into PLC systems to monitor the performance of the pump and to control maintenance programs. These pumps can also come with pulsation dampeners inside to minimise water hammer and vibration.

Maintenance and Reliability

Contrary to the majority of pumps, the air-operated double diaphragm pumps (AODD) can run dry and do not need electrical power. This makes them the workhorses of the world of industrial pumping. However, they must be maintained properly in order in order to maintain their efficiency and dependability.

Inspections on a regular basis can avoid common problems such as an aging valve or diaphragm that can significantly decrease your pump’s life. The material your diaphragm is constructed of (EPDM rubber, or PTFE) will impact its longevity and its stiffness.

The position of the valves manually on suction as well as discharge throughout maintenance could assist in the prevention of issues such as blockage of the pump. Lack of lubrication or incorrect mounting of the pump can also lead to a host of difficulties.