Air Operated Double Diaphragm Pumps

Double Diaphragm Pump Leader For Reliable Transfer And Dosing.


A double diaphragm pump is a type of positive displacement pump that moves fluids by using the action of flexible membranes and a check valve to move fluids efficiently. It's commonly used for pump fluids and slurries. The design of a double diaphragm pump makes it ideal for handling fluids containing solid particles or viscous substances. Check it out how a double diaphragm pump work.

ARO air operated double diaphragm pumps (AODD pumps) are designed for general fluid transfer and has as power source compressed air. Our double diaphragm pumps reliably transfer a wide variety of fluids, from clean, light viscosity to medium viscosity. They can pump large particles without damage and run dry.

Metal or plastic diaphragm pump casings can easily handle corrosive and abrasive fluids. Most ARO diaphragm pumps are ATEX certified (CE Ex11 2GD X).

Rugged and Reliable in Harsh Conditions

ARO double diaphragm pumps are expertly engineered to go the distance, even in the harshest environment.

Our pumps feature maximized flow rates with minimized pulsation and air consumption. Our patented unbalanced air valve design ensures stall-free, ice-free operation. Due to their pneumatic motor, our double diaphragm pumps could be used in potentially explosive areas.

ARO double diaphragm pumps are a reliable, cost-effective choice for industrial and chemical applications. Our bolted, leak-free construction eliminates cross-contamination and increases operator safety. Modular construction, reduced parts count and easy-to-use repair kits minimize repair time and cost.

ARO pumps are rigorously tested to ensure that your pump is built to last.

Double Diaphragm Pumps Tailored to Your Application

ARO double diaphragm pumps are available with many flow rates and sizes, allowing you to vary the flow outlet and discharge pressure. Our pumps can run as slow as 0.26 gallons (1 liter) per minute and up to 275 gallons (1079 liters) per minute for larger pump sizes. Adjust fluid pressure up to 125 (8.6 bar) by using an air filter/regulator and a needle valve.

Each ARO double diaphragm pump can be customized for your fluid transfer needs. Choose from a wide range of diaphragm materials, casing options and accessories. Find metal or plastic fluid sections and housings that can handle any fluid, including corrosives and abrasive.

Different types of Diaphragm Pump

Diaphragm pumps are a type of positive displacement pump that use a flexible diaphragm to move fluid. There are several types of diaphragm pumps, each with its own advantages and applications:

Air-operated diaphragm pump: This type of pump uses compressed air to flex the diaphragm, creating suction and discharge strokes. It is often used for transferring viscous or abrasive fluids and in applications where electricity is not available or practical.

Mechanical diaphragm pump: These pumps use a mechanical linkage or drive system to flex the diaphragm. They are often used in applications where higher pressures or precise flow control is required.

Hydraulic diaphragm pump: These pumps use hydraulic fluid to flex the diaphragm. They are commonly used in applications where a constant, non-pulsating flow is required, such as in chemical processing.

Solenoid diaphragm pump: These pumps use a solenoid to flex the diaphragm. They are often used in applications requiring precise control over small volumes of fluid, such as in medical devices or analytical instruments.

Each type of diaphragm pump has its own advantages and disadvantages, so it's important to consider the specific requirements of your application when selecting a pump.