289109N
Valve
Bendix

This valve assembly functions as a central controller within the air brake management hierarchy, regulating pressure, feed, and release sequences to ensure predictable braking performance. The unit’s specification set aligns with typical valve bodies found in Bendix systems, supporting reliable operation across a range of duty cycles and pressures. Operators benefit from stable control of apply and release gradients, enabling precise modulation during dynamic driving conditions and ensuring that trailer and tractor braking respond cohesively. The component’s cross-compatible design simplifies maintenance, with standard mounting patterns, port sizes, and electrical or pneumatic connections that match common service conventions. Typical applications include regulating supply to service brakes, modulating hold-off pressure, and coordinating with auxiliary valves for integrated braking strategies. For technicians, the emphasis is on proper torqueing, port verification, and routine functional testing to confirm that pressure curves track expected profiles under load, temperature variation, and rapid throttle changes. The broader category context for this part underscores its role in reliable valve operation within the air-brake subsystem.