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Air Operated Diaphragm Pumps

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

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 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 diaphragm pumps could be used in potentially explosive areas.

ARO 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.

Our pumps are rigorously tested — far beyond typical industrial use — to ensure that your ARO diaphragm pump is built to last.

Diaphragm Pumps Tailored to Your Application

ARO 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 p.si. (8.6 bar) by using an air filter/regulator and a needle valve.

Each ARO 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.

Piston Pumps and Packages

ARO piston pumps are capable of handling a range of viscous fluids. With a wide selection of pressure ratios and displacement rates available, ARO offers a number of piston pump packages that can meet your specific application needs.

Offered in multiple configurations, including single-post, two-post, and heavy-duty two-post, our customizable packages ensure you have the right solution for a variety of piston pump applications, including oil and grease, paint and spray coatings, adhesives, sealants, and much more.

Piston Pump Packages to Fit Your Application

Proper fluid management is about more than just a reliable pump–it requires a comprehensive system of integrated parts working together to enhance your productivity and output. To simplify the ordering process, ARO offers complete hydraulic & pneumatic piston pump packages that provide the right configuration of air motor, piston pump, mount, follow, controls, and downstream accessories for your specific application.

Electric Diaphragm Pumps

The next evolution in pump technology is here. From a brand, you have trusted for almost 100 years comes the EVO Series™ Electric Diaphragm Pump.

ARO is taking many of the benefits of its industry-leading EXP Series Air-Operated Diaphragm Pumps and combining them with a unique set of features from other pump technologies.

The result? An electric diaphragm pump with exclusive features never before available in one pump solution. You get the versatility of a diaphragm pump with the efficiency and controllability of other positive displacement pumps.

It's time to evolve your expectations of what a pump can do for you.

WHEN IDEAS EVOLVE INTO REALITY

The EVO Series™ Electric Diaphragm Pump offers an exclusive set of proven technologies packaged into one breakthrough pump.

Integrated encoder
No maintenance gearbox
Sealless design – no dynamic seals that could allow hazardous fluids to enter the environment
Unique 3 chamber design
Innovative diaphragm developed exclusively for the EVO Series™ Electric Diaphragm Pump
Choice of 5 different materials of construction to handle the most aggressive and corrosive fluids. Select from stainless steel, cast iron, aluminum, polypropylene, or conductive polypropylene.
Built-in control and monitoring capability
Can be controlled with a PLC
Built-in motor thermal protection
Extended maintenance cycle and smart maintenance schedule
Synthetic oil and filtration system for reliable performance over a wide range of temperatures
ARO exclusive AC gear motor available in standard (black) safety area version or hazardous duty (red) version