The MAC 55B-11-RA is a highly reliable pneumatic pilot-operated valve engineered for precision and durability in industrial automation environments. Featuring a versatile 3-way, 2-position configuration, this valve utilizes air pilot actuation combined with a spring return mechanism to ensure accurate and consistent directional airflow control. The robust aluminum body is designed to withstand rigorous daily use, while the integrated through-hole mounting bosses allow for secure and straightforward installation. Equipped with standard 1/4-inch NPT threaded ports and an integrated pilot port, the 55B-11-RA operates efficiently within a pressure range of 25 to 150 PSI, making it an ideal choice for a wide variety of pneumatic applications.