ARO is Fluid Intelligence and a world-class manufacturer of positive displacement pumps and systems. With an 85-year legacy of premier product performance and service excellence, ARO provides fluid handling equipment for customers and industries worldwide including chemical, manufacturing, energy, pharmaceutical, mining and more. Offering air-operated diaphragm pumps, piston pumps & packages, filters, regulators, & lubricators (FRL’s), lubrication equipment, and pneumatic valves & cylinders, ARO has the right product to meet your specific needs.



ARO Diaphragm Pumps


ARO Fluid Handling Products Inquiry Form

Complete the following form, so we can help you with the best solution for your application. We’re at your service.

ARO Diaphragm Pump Maintenance

ARO Piggybacks: Filter/Regulator Overview and Maintenance
ARO Piggybacks consist of a filter/regulator combination. Simple maintenance and practical knowledge can help prolong the ARO part and enhance usage. Learn how to prevent air leakage from the air compressor, remove water and debris from the filter, remove the bowl to change the filter element, and increase or decrease the air pressure with the regulator.

0:15 - 0:42 Ensure ball valve is open and closed properly to prevent air leakage
0:45 - 0:59 How to remove water and debris from piggyback
0:60 - 1:28 Removing the bowl to change filter element if needed
1:29 - 1:58 Increase or decrease the downstream air pressure by utilizing the regulator on piggyback

More details:

Backpressure Ratio Calculator

This tool provided by ARO will calculate the minimum pump ratio needed to move your material. Higher ratio pumps may be used as necessary.