745-287114N
Air Brake Relay Valve
Mack

The relay valve is a critical component in the air brake system, responsible for controlling the application and release of brakes across multiple axles. It ensures quick and synchronized brake response, which is vital for maintaining vehicle stability and safety during braking maneuvers. This valve acts as an intermediary, amplifying the air pressure signal to deliver effective brake force precisely when needed. Its reliable operation reduces the risk of uneven braking and enhances overall vehicle control. Designed for durability, it withstands the rigors of heavy-duty use and fluctuating pressure conditions. Source One Parts Center supplies high-quality relay valves that meet strict industry standards, helping fleet operators maintain optimal safety and performance.