51 54122 0007 Compatible MAN HOCL Safety Valve

What does a compressor safety valve do?

This safety valve serves as a critical protection component within the air brake compressor system, preventing excessive pressure buildup that could damage the compressor or the pneumatic lines. By utilizing a mechanical opening mechanism, it ensures the system operates within safe limits during intensive service conditions.

Compatible MAN HOCL vehicle applications

Designed specifically for MAN HOCL 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, this component is engineered to meet the rigorous demands of heavy commercial vehicle braking systems.

Installation and maintenance guidance

Installation requires precise attention to the M26 thread connection to ensure a secure, leak-free fitment against the compressor housing. Technicians should verify that the 17 BAR pressure rating aligns with the specific requirements of the vehicle's pneumatic circuit and check all gaskets for proper seating during replacement.

System protection and troubleshooting

Regular inspection of the valve is recommended to prevent air leaks and ensure the relief mechanism remains functional under high-pressure operation.

OE cross-reference

7700 920 001 (Compressor Safety Valve) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 51541220007.