Air Operated Double Diaphragm Pump

With proven performance in the field and backed by an industry leading 5-year warranty, ARO air operated diaphragm pumps are a truly versatile fluid handling solution for numerous applications. Known for industry-leading efficiency, reliability, and flow rates, and a large range of materials and porting, ARO has the right pump to deliver consistency in the most demanding situations.

The ARO range of air operated diaphragm pumps offers many materials of construction. Our metallic offering consists of aluminum, cast iron, stainless steel and hastelloy®. Our non-metallic offering consists of polypropylene, acetal and PDVF. All ARO pumps are available with convoluted diaphragms offering long product life and reduced maintenance.

Why ARO Diaphragm Pumps?

ARO Diaphragm Pump Features:

  • ARO Diaphragm Pumps provide stall-free, ice-free operation.
  • Patented “Unstallable” unbalanced air valve design avoids stalling issues associated with other pumps.
  • “Quick-Dump” exhaust valves divert cold exhaust air from ice-prone components, preventing freezing.
  • Backed by a five-year warranty, we have the most reliable pump line on the market today.

Air operated diaphragm pumps are designed for general use. They can easily pump from clean, light viscosity fluids to corrosive, abrasive medium viscosity fluids and can transfer large particles without damage. Due to their pneumatic motor, they could be used in potentially explosive areas. Most of the ARO® diaphragm pumps are ATEX certified (CE Ex11 2GD X).

These pumps offer the ability to vary the flow outlet and discharge pressure as slow as 0.26 gallons (1liter) per minute up to 275 gallons (1041 liter) per minute for our larger sizes and adjust fluid pressure up to 125 p.si. (8.6 bar), by using just an air filter / regulator and a needle valve

Chemical Compatibility  Guide
ARO Diaphragm Pump Configurator

The ARO range of diaphragm pumps offers many materials of construction.

Metallic Materials:

  • Aluminium
  • Cast Iron
  • Stainless Steel
  • Hastelloy®

Non-Metallic Materials:

  • Polypropylene
  • Acetal
  • PDVF

All ARO pumps are available with convoluted diaphragms offering long product life and reduced maintenance.


Pro Series Diaphragm Pumps

Pro Series Diaphragm Pumps

ARO Pro Series air operated diaphragm pumps are ideal for general industrial and OEM installation applications. They can easily pump from clean, light viscosity fluids to corrosive, abrasive medium viscosity fluids and can transfer large particles without damage.

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Expert Series Diaphragm Pumps (EXP)

Expert Series Diaphragm Pumps (EXP)

A favorite among process professionals, ARO EXP diaphragm pumps are a truly versatile solution for numerous applications. Known for its industry-leading efficiency and reliability, flow rates of up to 275 GPM (1041 LPM) and a large range of material and porting configurations, ARO has the right pump for your application. With proven performance in the field and backed by a 5-year warranty, ARO EXP diaphragm pumps deliver consistency and reliability in the most demanding situations.

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Compact Diaphragm Pumps

Compact Diaphragm Pumps

Ideal for OEM and General Industrial applications where peak performance, endurance, and reliability are a must, our compact pumps feature big performance in a small package. With flow rates up to 14.8 GPM (56 LPM) and a large range of material and porting configurations, we have the right pump for your application.

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Specialty Pumps

Specialty Pumps

Utilizing technology identical to other ARO Pumps, these Specialty models will provide the same high level of performance and satisfaction but in a design tailored for your specific application. Specialty pumps include: Drum Packages, Flap Valve pumps, Powder Transfer pumps, High Pressure pumps, Sanitary Transfer pumps, Centrifugal De-watering pumps, and Fuel Pumps.

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ARO Controller and Electronic Interface Pump

ARO Controller and Electronic Interface Pump

Migrate to a smart touch-and-walk-away system that helps optimize your costs and production time. The new ARO Controller creates a fully automated multi-pump system and works seamlessly with ARO Electronic Interface pumps.

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ARO Station

ARO Station

The ARO Station is a customized solution that houses an ARO pump and piping in a durable housing in order to reduce leaks and fumes during chemical transfer from one container to another.

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Diaphragm Pump Parts and Accessories

Diaphragm Pump Parts and Accessories

ARO offers a comprehensive array of diaphragm pump accessories to complement your pump. Accessories like Pump Actuation Valves, Diaphragm Failure Detection Kits, and Cycle Sensors / Counters will keep your pump maintained and running while saving you time and money.

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ARO FDA Diaphragm Pump

ARO FDA Diaphragm Pump

ARO® FDA compliant diaphragm pumps deliver safety and quality, as well as industry leading total cost of ownership. By combining the rugged reliability of our EXP pump design with the capacity to handle high volume transfer and dispensing applications, ARO pumps enable you to produce more for your customers.

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