6886834 Volvo B12 TD120 Relay Valve

What does a relay valve do?

This relay valve serves as a critical component within the pneumatic braking system, managing air pressure distribution to ensure consistent braking force. Designed for heavy commercial vehicle applications, it utilizes high-strength components to withstand the rigorous demands of heavy-duty service cycles and pressure fluctuations.

Compatible vehicles and engines

This specific unit is compatible with Volvo B12 trucks equipped with TD120 engines. It functions effectively within the vehicle's air brake circuit to provide precise control. The valve is engineered to meet the requirements of heavy commercial vehicle brake systems.

Installation and maintenance

Installation requires careful attention to the port specifications, including the M22x1.5 and M16x1.5 connections. Technicians should ensure all seals are seated correctly to maintain the maximum operating pressure of 8 BAR. Regular inspections of the pneumatic lines and port integrity are recommended during routine maintenance intervals.

System integration guidance

Proper selection of this relay valve ensures optimal system integration and prevents pressure drops in the braking circuit. Always verify that the connection threads match the existing vehicle lines to avoid leaks or air pressure loss during operation.

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.