ARO R37121-420 Regulator: Reliable Air Control for Industrial Applications.

Need a dependable replacement regulator for your pneumatic system? Look no further than the ARO R37121-420. This industrial-grade regulator delivers precise air pressure control, making it ideal for metalworking, fabrication, assembly lines, and other demanding applications.

Type: Regulator | Port Size (in.): 1/4 | Pressure Range (PSI): 0 - 30 | Gauge: No Gauge | Maximum Inlet Pressure (PSI): 250 | Temperature Range (F): 23 - 140 | Flow Capacity (SCFM): 59

Built to Perform in Your Industrial Environment:

• Unmatched Precision & Control: Dial in the exact air pressure (0-140 psig / 0-9.6 bar) needed for your equipment. Need a different range? Easily swap springs for custom pressure settings (not included).
• Relieving or Non-Relieving Options: Choose between a relieving option that vents excess pressure or a non-relieving option for applications where pressure needs to be contained.
• Industry-Leading Flow Rates: The R37121-420 keeps up with your demanding workflow, ensuring consistent performance.
• Durable Construction: Built with a tough aluminum body and high-quality materials like nitrile seals and urethane tubing, this regulator is built to withstand harsh industrial environments.

Designed for Easy Maintenance & Long Service Life:

• Modular Design: Simplifies maintenance and repairs. A full line of accessory kits (including spare parts like sight dome repair kits and bowl service kits) is readily available to extend the life of your regulator.
• Easy Installation: Includes a panel nut for quick and secure mounting.
• 2-Year Warranty: ARO stands behind the quality and performance of the R37121-420 with a comprehensive 2-year warranty.

The ARO R37121-420 Regulator is a perfect choice for professionals in metalworking, manufacturing, ship repair, fabrication, assembly plants, oil and gas, and aerospace industries. It offers the ideal combination of precise air control, robust construction, and user-friendly features to keep your operations running smoothly.

Looking for more information about ARO Regulators? Click here to view the ARO FRL Catalog

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