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ARO Expert Series Diaphragm Pumps 1" to 3"


ARO Expert Series Diaphragm Pumps are a versatile solution for various applications. The EXP 1" models achieve flow rates of up to 53 GPM (200.6 LPM) and offer a wide array of material and porting configurations. The 1 1/2" models achieve flow rates of up to 123.10 GPM (465.90 LPM) and the 2" models achieve flow rates of up to 184 GPM (696.40 LPM). The 3" non-metallic pumps can transfer up to 285 GPM (1079 LPM) of fluid without causing the type of damage possible from smaller capacity pumps that use higher pressure.Air operated double diaphragm pumps (AODD) often used for transfer, filling, re-circulation and supply in chemical, Industrial, Food Processing and Water/Wastewater treatment markets.


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.


  • EXP is compatible with almost any automation system
  • Electronic Interface Pumps are now available for hazardous duty environments (ATEX, NEC, and CEC certifications)
  • Leak detection option certified for use in ATEX/ and NEC/CEC locations detects diaphragm failure to help reduce costly production downtime
  • Internal cycle sensor and end-of-stroke signals track end-of-stroke feedback and pump data
  • Pre-assembled components for hassle-free and error-proof installation

industrial-tools-parts-breakdown.pngLooking for more information about the ARO Expert 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