ARO R27221-100 Air Regulator

ARO R27221-100 Air Regulator is an adjustable pneumatic regulator from Ingersoll Rand's ARO line, engineered to maintain a stable downstream pressure in compressed-air systems for reliable tool and actuator performance. It features a 1/4 in NPT port size for easy integration with standard air lines and is rated to a maximum pressure of up to 200 psi, making it suitable for a range of shop and industrial applications. This model is part of the ARO Mini Series regulator family, which emphasizes compact form factors and knob-adjustable setpoints for straightforward pressure tuning. The regulator is designed for hands-on adjustment with a control knob to set the desired downstream pressure within the regulator’s operating range, helping ensure consistent performance across connected components. Typical uses include regulating pressure for pneumatic actuators and other automation devices that rely on steady, controlled air pressure in distributed air systems. Its 1/4" NPT connection supports straightforward pairing with common filter-regulator assemblies and standard piping in many facilities.