51 54122 0007 MAN HOCL Compressor Safety Valve

This compressor safety valve serves as a critical component within the air brake system, functioning to prevent excessive pressure buildup within the compressor. By utilizing a calibrated spring mechanism, the valve ensures that air pressure remains within safe operating limits, thereby protecting both the compressor assembly and the downstream pneumatic lines from potential damage caused by overpressure.

This component is specifically designed for MAN HOCL vehicles equipped with D2676 engines, including models such as the 18.310 HOCL-NL, 18.400 HOCL, and 24.440 HOCLN. It provides an essential safety layer for these heavy commercial vehicle configurations, ensuring the integrity of the braking system under intensive operating conditions.

Technicians should verify the M26 port connection and the 17 BAR pressure threshold during installation to ensure correct fitment. Proper maintenance involves inspecting the valve for any signs of air leakage or debris that could interfere with the mechanical opening/closing mechanism. Consult your authorized distributor to ensure complete compatibility with existing pneumatic systems.

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.