51 54122 0003 MAN SL II Equivalent Compressor Relief Valve

What does a compressor safety valve do?

This compressor safety valve serves as a critical component within the air brake system, functioning to prevent excessive pressure buildup. By utilizing a calibrated spring mechanism, it provides reliable mechanical opening and closing to protect the compressor and connected pneumatic lines from overpressure conditions.

Compatible vehicles and engines

Designed specifically for MAN SL II trucks, including SL 353 and SL 363 variants, this component ensures precise pressure regulation. It is engineered to meet the rigorous demands of heavy commercial vehicle service environments through high-strength components.

Installation and maintenance

The valve features an M26 port connection and is rated for 17 BAR operating pressure. Technicians should ensure all threaded connections are properly seated and check the spring calibration during routine maintenance to maintain system integrity.

Troubleshooting and selection

Maintaining correct relief pressure is essential for the longevity of the entire air brake circuit. Consult your authorized distributor for installation guidance and compatibility verification.

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.