003 429 59 44 Mercedes-Benz Compatible Relay Valve

What does a relay valve do?

This relay valve serves as a critical component within the compressed air brake system of heavy commercial vehicles. It facilitates rapid air pressure transfer triggered by a pilot signal, ensuring that braking force is applied effectively and with minimal delay across the pneumatic circuit.

Compatible vehicles and connections

The component is designed for use in Mercedes-Benz vehicles. It features specific port dimensions including an M22x1.5 primary port and M16x1.5 ports to ensure precise integration into existing air brake lines.

Installation and maintenance

For proper installation, technicians should verify that all connection points are free of debris and that the M22x1.5 and M16x1.5 ports are seated correctly to prevent leaks. It is essential to ensure the system operates within the maximum pressure limit of 8 BAR during testing.

System troubleshooting

Regular inspection of the valve housing and connection seals can help prevent pneumatic system failures. Consult your authorized distributor to ensure this part meets your specific fleet requirements.

OE cross-reference

303.01.0005 (Relay Valve Relay Valves) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 0034295944.