51 54122 0011 Compatible MAN SL II Safety Valve

What does a compressor safety valve do?

This compressor safety valve serves as a critical pressure protection component within the air brake system. It functions by utilizing a calibrated spring mechanism to provide mechanical opening and closing, ensuring that system pressure remains within safe operating limits to prevent component damage.

Compatible vehicles and engines

This part is compatible with MAN SL II trucks, including the SL 353 and SL 363 variants. It is engineered to meet the rigorous demands of heavy commercial vehicle service environments, maintaining consistent performance under high-pressure conditions.

Installation and maintenance

The valve features an M26 port connection and is rated for 17 BAR. When performing installation, technicians should ensure the threaded connection to the compressor housing is secure and check all seals to prevent air leaks. Regular inspection of the relief threshold is recommended during routine maintenance intervals.

System reliability

Proper selection of this safety valve ensures the integrity of the pneumatic braking system. For optimal performance, always verify that the relief pressure aligns with the specific requirements of the compressor unit.

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.