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ARO Pro Series Diaphragm Pumps 1" to 2"


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. Due to their pneumatic motor, they could be used in potentially explosive areas. Pro Series 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 (1040 liter) per minute for our larger sizes and adjust fluid pressure up to 123 PSI (8.5 bar), by using just an air filter / regulator and a needle valve. Most of the ARO diaphragm pumps are ATEX certified (CE Ex11 2GD X).


Exclusive ARO® Quick Dump™ Valve

EXP Series diaphragm pumps feature an exclusive to ARO® Quick Dump™ valve that reduces icing by keeping cold exhaust air out of the air motor. This patented feature improves reliability and durability when running your pumps at high speeds to reduce downtime and maintenance.



Solenoid in the Air Valve

What is the advantage? The solenoid actuation allows for accurate cycle rate control and provides a more consistent volume per stroke than is achieved with standard pumps. Additionally, solenoid control allows for a precise number of cycles to be fully completed for improved batch repeatability. 


  • Sealless Design
  • Low Material Shear
  • Ease of Maintenance
  • Can Run Dry Without Damage
  • Portable
  • Self Priming
  • Easy to Install

industrial-tools-parts-breakdown.pngLooking for more information about the ARO Pro Series Diaphragm Pumps? Click here to view the Catalog

 For help choosing the correct Diaphragm Pump for your application, please call (800) 608-5210 or email