6886834 Relay Valve for Volvo

What does a relay valve do?

This relay valve serves as a critical component within the compressed air brake system of heavy commercial vehicles. Its primary function is to facilitate rapid air pressure transfer triggered by a pilot signal, ensuring responsive and consistent braking performance under heavy loads.

Vehicle compatibility and engine fitment

The component is engineered for compatibility with various Volvo models, including the F10, F12, FL10, FL12, N10, N12, NL10, NL12, B10B, B10M, and B12 series. It is compatible with several engine configurations such as the TD100, TD120, D10A, and D12A engines to ensure precise system integration.

Installation and technical specifications

For proper installation and maintenance, technicians should verify the port specifications: Port 1 is M22x1.5, while Ports 2 and 4 are M16x1.5. The unit must operate within a maximum pressure limit of 8 BAR to maintain structural integrity and functional accuracy within the pneumatic circuit.

Maintenance and troubleshooting

Regular inspection of the air lines and connection points is recommended to prevent pressure drops in the braking system. Check the compatibility list to ensure correct fitment for your specific vehicle model.

OE cross-reference

303.01.0005 (Relay Valve Relay Valves) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 6886834.