51 54122 0003 Compatible HOCL Compressor Safety Valve

What does a compressor safety valve do?

This compressor safety valve serves as a critical protection component within the air brake system. By regulating the air pressure generated by the compressor, it prevents over-pressurization, thereby protecting both the compressor housing and the pneumatic brake lines from potential damage. These high-strength components are designed to operate reliably in demanding heavy commercial vehicle environments.

Vehicle and engine compatibility

This part is compatible with MAN HOCL series compressors, including models such as the 18.310 HOCL-NL, 18.400 HOCL, 18.430 HOCL, 18.440 HOCL, 24.440 HOCLN, 18.360 HOCL, and 18.320 HOCL-NL. It ensures proper venting to maintain safe operating thresholds throughout the braking cycle.

Installation and maintenance

For installation, technicians should verify that the M26 thread connection is clean and seated correctly to prevent air leaks. Given the 17 BAR pressure rating, ensuring all seals are properly positioned during assembly is vital for maintaining the integrity of the pneumatic circuit. Regular inspection of the valve during scheduled maintenance can help prevent system-wide pressure fluctuations.

System protection and selection

Consult your authorized distributor.

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.