Air Operated Double Diaphragm Pumps

ARO compact diaphragm pumps feature flow rates up to 33 GPM (125 LPM) and offer a wide range of material and porting configurations. EXP Series pumps are available with Electronic Interface capability, solenoid actuation for accurate cycle rate control, and long-life PTFE diaphragms, providing a 2-time increase in service life over standard PTFE*.

Rugged and Reliable in Harsh Conditions

ARO diaphragm pumps are expertly engineered to go the distance, even in the harshest environment.

Our pumps feature maximized flow rates with minimized pulsation and air consumption. Our patented unbalanced air valve design ensures stall-free, ice-free operation. Due to their pneumatic motor, our diaphragm pumps could be used in potentially explosive areas.

ARO diaphragm pumps are a reliable, cost-effective choice for industrial and chemical applications. Our bolted, leak-free construction eliminates cross-contamination and increases operator safety. Modular construction, reduced parts count and easy-to-use repair kits minimize repair time and cost.

Our pumps are rigorously tested — far beyond typical industrial use — to ensure that your ARO diaphragm pump is built to last.

Diaphragm Pumps Tailored to Your Application

ARO diaphragm pumps are available with many flow rates and sizes, allowing you to vary the flow outlet and discharge pressure. Our pumps can run as slow as 0.26 gallons (1 liter) per minute and up to 275 gallons (1079 liters) per minute for larger pump sizes. Adjust fluid pressure up to 125 p.si. (8.6 bar) by using an air filter/regulator and a needle valve.

Each ARO diaphragm pump can be customized for your fluid transfer needs. Choose from a wide range of diaphragm materials, casing options and accessories. Find metal or plastic fluid sections and housings that can handle any fluid, including corrosives and abrasive.