51 54122 0007 MAN Compatible Compressor Safety Valve

What does a compressor safety valve do?

This compressor safety valve serves as a critical pressure relief component within the air brake system of heavy commercial vehicles. It is engineered to maintain safe operating pressures by mechanically opening to vent excess air when limits are exceeded, protecting the pneumatic system from overpressure damage. Built with high-strength components, it ensures long-term durability in demanding service environments.

Compatible MAN vehicles and engines

This component is specifically designed for use in MAN heavy commercial vehicles, including HOCL, LION'S REGIO, TGA, TGS, TGX I, NL, NG, LION'S COACH, SÜ, SL II, and LION'S CITY models. It is compatible with engines such as the D2066 and D2676. This part is also fitted to various MAN truck configurations to ensure optimal pneumatic performance.

Installation and maintenance

For correct installation, technicians should verify the M26 port connection and ensure the 17 BAR pressure specification aligns with the specific vehicle requirements. Regular inspection of the valve housing and seals is recommended during routine brake system maintenance to prevent air leaks or premature failure.

System reliability

Maintaining the integrity of the compressor safety valve is essential for the overall reliability of the braking system.

OE cross-reference

7700 920 001 (Compressor Safety Valve) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 51541220007.