51 54122 0011 MAN NL Compressor Safety Valve

What does a compressor safety valve do?

This compressor safety valve serves as a critical protection component within the pneumatic brake system. By regulating pressure levels, it prevents over-pressurization, thereby protecting both the air compressor and the subsequent brake lines from damage. Constructed with high-strength components, this valve is engineered to withstand the intense thermal and mechanical stresses found in heavy commercial vehicle environments.

Compatible vehicles and engines

This specific component is fitted to MAN NL trucks, including models such as the NL 283, NL 323, NL 273, and NL 313. It functions as an essential replacement part for maintaining optimal system integrity in these heavy-duty applications.

Installation and maintenance

For professional installation, ensure the M26 port is properly seated and the connections are tightened to the manufacturer's specified torque to prevent air leaks. Regular inspection of the valve seat and spring tension is recommended during routine pneumatic system maintenance to ensure it continues to vent correctly at the designated 17 BAR threshold.

System protection and troubleshooting

Maintaining correct pressure relief settings is vital for road safety and preventing premature wear of pneumatic seals throughout the braking circuit.

OE cross-reference

7700 920 001 (Compressor Safety Valve) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 51541220011.