Air Operated Diaphragm Pumps


With an 80-year legacy of premier product performance and service excellence, ARO provides fluid handling product range of Air Operated Diaphragm Pumps.piston pumps and packages equipment for customers and industries worldwide including chemical, manufacturing, energy, pharmaceutical, mining and more.


Pumps are available in Metallic and Non Metallic Construction with a range of wetted parts of Diaphragms and Elastomers.

Non Metallic in Polypropylene;PVDF;Conductive Polymer wetted parts  construction

Metallic in  Aluminum and SS-316 wetted parts construction

Metallic Pumps and Conductive Polymer Pumps Meet ATEX Classificaton. Pumps have Highest flow in the Industry Incorporating Patents to achieve with an un matched efficiency Lowest cost of ownership

Compact Pumps 1/4”, 3/8”, 1/2” & 3/4” ports

Flow rates up to 14.8 GPM (56 LPM)

Expert Series Pumps  (EXP) 1”, 1-1/2”, 2” & 3” ports

ARO’s PROCESS GRADE, Expert Series Diaphragm Pumps feature the best total cost of ownership of any

diaphragm pump on the market

Flow rates up to 275 GPM (1041 LPM)

Pro Series Pumps 1”, 1ó”, 2” & 3” ports

ARO’s INDUSTRIAL GRADE, Pro-Series Diaphragm Pumps provide high performance & stall-free reliability

Flow rates up to 237 GPM (897 LPM)

Whats New?? Pumps with Electronic Interface


ARO Electronic Interface Pumps are air-operated diaphragm pumps with the most accurate, electronically controlled dosing available. With their best-in-class, smart design, ARO Electronic Interface Diaphragm pumps assure consistent flow rates and pinpoint control for a myriad of fluids and applications. Thanks to an internal solenoid valve, the pump offers uperior fluid control and repeatability, plus easy maintenance to keep operations running. Add reliable leak detection, an end-of-stroke sensor and cycle sensing, and you have an electronic interface pump with custom features you need right off the shelf.


Pictured above is 1/2 Inch Pump


ARO Controller Designed for Pump control Variety of Pre Programmed or user directed funtions allow plant manager to Customise the system to suit the Process Need  


  • Ideal for Applications where pump has to be controlled remotely
  • Batching,Proportional Control and Dozing Applications;using a Local PLC. or  by Signals from your process PLC
  • pH control (Pump operates by 4-20mA output of your pH controller ;PLC control Optional)
  • Any other application where the Sensor gives an output ;pump will operate based on inputs from Sensor