Rotork Fairchild Crossover Regulators precisely manage pneumatic control signals, smoothly switching between two independent pressure sources without disrupting system operation. Specifically engineered for redundancy and reliability in critical control applications, these crossover regulators automatically transfer control from a primary to a secondary source upon detecting a drop or failure in supply pressure. Featuring advanced diaphragm-actuated mechanisms and robust internal valving, they ensure seamless transition and continuous stable pressure output. Built with corrosion-resistant materials, compact designs, and precise response characteristics, Rotork Fairchild crossover regulators excel in harsh industrial environments, including process control, automation, safety shutdown systems, and instrumentation requiring uninterrupted performance.