With flow rates up to 275 gpm (1,079 L/min) and pressures up to 125 psi (8.6 bar), ARO pneumatic diaphragm pumps - AODD pumps - deliver safe, reliable fluid transfer for challenging industrial applications. Powered by compressed air, they handle liquids, slurries, abrasives, and corrosive chemicals while running dry and passing solids without damage. Available in metallic and non-metallic constructions, ARO pumps provide broad chemical compatibility, simple maintenance, and proven durability. Most models are ATEX certified, making them a trusted choice for chemical processing, manufacturing, mining, and oil & gas operations.
From corrosive chemicals to abrasive slurries, ARO pumps deliver dependable performance where it matters most.
Achieve flow rates up to 275 gpm (1,079 L/min) and operating pressures up to 125 psi (8.6 bar). Modular construction simplifies servicing and reduces maintenance costs.
Reduce lifetime operating costs with fewer wear parts, simple repairs, and genuine maintenance kits.
Patented air motor technology ensures stall-free, ice-free performance, delivering dependable operation even in demanding industrial environments.
Optimize compressed air consumption and reduce wasted energy. ARO pumps automatically stop when flow is no longer required, helping improve operating efficiency.
Transfer slurries, solids, abrasive media, and aggressive chemicals with confidence using metallic and non-metallic material options.
Choose from aluminum, cast iron, stainless steel, Hastelloy®, polypropylene, PVDF, and multiple diaphragm materials to match your process requirements.
Operate safely without fluid damage, helping prevent unplanned downtime and protecting your process.
Certified models are available for hazardous and explosive environments, providing safe operation where reliability matters most.
Rugged construction and rigorous testing ensure extended service life and consistent performance in harsh operating conditions.
Select your industry to explore common applications and recommended pneumatic diaphragm pump solutions
Safely Move the Most Challenging Industrial Chemicals
Safely transfer acids, caustics, solvents, and specialty chemicals from tanks, drums, totes, railcars, and process vessels using leak-resistant pneumatic diaphragm pump technology.
Maintain accurate dosing, chemical injection, and metering operations while handling corrosive fluids across manufacturing, water treatment, and industrial processing applications.
Support chemical blending, bath circulation, ingredient transfer, and filter press processes with reliable flow control and broad material compatibility.
Deliver Consistent Coverage and Superior Finishes
Handle industrial paints, primers, protective coatings, and high-solids materials while maintaining smooth, dependable flow throughout production processes.
Transfer and circulate solvent-based, water-based, and specialty inks with controlled flow that supports consistent color quality and process reliability.
Move abrasive pigments, powders, resins, fillers, and coating additives without compromising product integrity, ensuring repeatable performance and finish quality.
Keep Starch Adhesive Flowing Around the Clock
Transfer starch-based adhesives efficiently from glue kitchens and storage tanks to single facers, glue stations, and critical production points.
Maintain stable adhesive viscosity through uninterrupted circulation loops that reduce settling, improve bonding quality, and optimize board performance.
Recover excess starch glue and return it to storage tanks for recirculation, helping reduce waste while supporting efficient corrugator operation.
Master Abrasive Slurries and Precision Formulations
Move highly abrasive ceramic slips and slurries throughout manufacturing processes while supporting reliable production and equipment longevity.
Transfer glazes, pigments, and color additives consistently to help ensure uniform product appearance across tiles, sanitary ware, and technical ceramics.
Support filter press operations, slurry conditioning, and water addition processes with dependable pumping performance in demanding ceramic environments.
Built for the Toughest Mining Conditions
Transfer abrasive slurries, mud, and semi-solid materials with rugged pneumatic diaphragm pumps designed for harsh mining environments.
Help keep pits, tunnels, and processing areas operational through reliable dewatering performance that improves safety and productivity.
Safely supply flotation chemicals, process reagents, treatment chemicals, and maintenance fluids across extraction and mineral processing operations.
Finding the right air operated double diaphragm pump is critical for reliable, safe, and efficient operation. Our Diaphragm Pumps Product Selector helps you quickly identify the best pump based on flow rate, pressure, materials, and connection type. Get tailored recommendations from the full ARO range for abrasive, corrosive, sensitive, or demanding industrial applications in just a few clicks.
Find useful tools, guides, and pump solutions to validate your application. Compare materials, understand AODD technology, and explore specialized ARO pump options.
Understand how AODD pumps use compressed air and flexible diaphragms. See why they handle abrasive, corrosive, and solids-laden fluids reliably.
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Choose the right wetted materials before selecting your pump. Compare diaphragm, ball, seat, and housing materials against your process fluids.
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Make The Right Pump Decision Faster
A pneumatic diaphragm pump uses compressed air to move fluids through flexible diaphragms. It belongs to the positive displacement pump family. These pumps are widely used because they can handle difficult fluids safely and efficiently.
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