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

The diaphragm made of elastomer flexes between two pumping chambers, creating positive or negative pressure differences that can be used for moving fluids – which are sucked in during discharge may bom mang khi nen and pushed back by suction. This process is repeated indefinitely.

Fluid Transfer Innovation

Air operated double diaphragm pumps (AODD) are a versatile pumping solution that can transfer various fluids and viscosities. They are inherently safer in comparison to other kinds of pumps as they are not powered by electricity and can be designed to be used in ATEX zones, hygiene applications and 3A accreditations.

Two diaphragms connect through a central section that is home to an air valve. Air valve channels compressed air to the back of diaphragm one, and causes it to create an upward pressure, pushing the liquid out of the pump. While diaphragm 2 performs a suction stroke. The process is carried out by an atmospheric pressure that forces water to suction valve. The flow can be adjusted through adjusting the speed of pumping. This pumping motion is similar to the exhalation/inhalation notion of human breathing.

Versatile Pumping Solution

The fact that they are positive displacement AODD pumps makes sure that they’re able to handle liquids across an array of different industries. If there’s an air compressor supply the pump can be utilized wherever necessary.

AODD pumps do not have seals they do not requirement for elaborate systems that control flow rates as well as pressures. Diaphragm elastomers may be determined to be suitable for the particular flow, with various durometers available to provide varying degrees of resistance to chemical and environments. The form and design of the diaphragm has an impact on the flow rate and pressure and also the life span. The selection of the right materials will determine the success of your operation. Selecting the appropriate material to suit your needs will allow you in reducing overall operational costs.


Air Operated Diaphragm Pumps (AODD) are powered by compressed air. They eliminate the possibility of electric currents contacting the product. These pumps can be employed in situations where it’s unsafe or not possible to use electric pumps as they do not release sparks, flashes, the leakage or short circuits.

They’re ideal for the transportation of liquids with shear sensitivities They are preferred for use that require a substance to be moved from below the surface. These pumps are also lightweight and can be arranged smaller to make them more compact.

Wetted construction materials may vary with the choice from 316L Stainless Steel, Neoprene, Viton or PTFE for diaphragms and balls. In the case of a specific application an appropriate choice of materials may be needed for optimum chemical compatibility. The pumps are safe in their own way and may be ATEX tested for use in hazardous environments.

Pump Applications Across Industries

The diaphragm pump operated by air can be used to move diverse liquids that range from high viscosity chemicals through food and even fuel. They can deal with solids that are up to 40% weight, and can be adjusted to fit to the pressure and flow requirements to each application.

During the suction cycle compressed air is pumped into one of the inner chambers which pushes out an opposite diaphragm toward the liquid chamber and lifts the ball at the bottom of the valve to draw in the fluid. When this has been completed, the air is switched off and the cycle repeats, alternating between the two diaphragms creating an action of double-acting pumping.

Typically, these pumps are equipped with stroke counters for integrating into PLC systems to track their performance and manage maintenance programs. They can also be supplied with internal pulsation dampeners that minimize vibrations and water hammer.

Maintenance and Reliability

Like most pumps, these air-operated double diaphragm pumps (AODD) are able to run dry and do not require any electrical power. These pumps are considered to be the powerhouses of the world of industrial pumping. But they have to be taken care of properly so that they can be used for long periods of time and dependability.

A regular check-up can prevent common problems such as an aging valve or diaphragm which can drastically decrease the pump’s longevity. What the material your diaphragm made of (EPDM rubber or PTFE) can affect the life of your pump as well as its stiffness.

Verifying the positions of valves that are manually controlled for suction and discharge while you are maintaining can help prevent issues such as an unblocking pump. The lack of proper lubrication and improper positioning of the pump can also cause a variety of other difficulties.