51 54122 0003 Safety Valve for MAN SÜ Compressors

What does a compressor safety valve do?

This compressor safety valve serves as a critical pressure relief component within the pneumatic braking system. It functions by maintaining air pressure within safe operational limits, protecting both the compressor housing and the downstream brake lines from overpressure conditions. By utilizing a calibrated mechanical mechanism, it provides a reliable first line of defense for the entire air system.

Compatible MAN SÜ compressors

This specific component is designed for compatibility with MAN SÜ compressors, including models such as SÜ 353, SÜ 273, SÜ 313, SÜ 320, and SÜ 360. It is engineered to meet the rigorous demands of heavy commercial vehicle service environments while ensuring precise pressure regulation.

Installation and maintenance

The valve features an M26 port connection and is rated for a 17 BAR operating pressure. When performing installation or maintenance, technicians should ensure the threaded connection is seated correctly to prevent leaks and verify that the relief threshold matches the specific requirements of the compressor assembly.

System protection and performance

Regular inspection of the safety valve is recommended during routine brake system servicing to ensure the spring mechanism and seals remain functional under high-pressure cycles.

OE cross-reference

7700 920 001 (Compressor Safety Valve) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 51541220003.