301.07.0049 Compatible Pressure Limiting Valve — WABCO

What does a pressure limiting valve do?

This pressure limiting valve plays a critical role in regulating air pressure within the pneumatic braking system of heavy commercial vehicles. By utilizing a precision piston-and-spring mechanism, it manages air flow to ensure that the braking system operates within safe and effective parameters, preventing over-pressurization in the circuit.

Vehicle compatibility and engine fitment

This component is specifically engineered for compatibility with DAF and Iveco trucks. It functions effectively within the air brake systems of these heavy-duty vehicles, providing reliable regulation under demanding operating conditions. It is also compatible with WABCO systems.

Installation and technical maintenance

For proper installation, technicians should verify the M16x1.5 port connections and ensure all lines are free of contaminants. The unit operates with an inlet pressure of 12.5 BAR and provides an outlet pressure of 11.0 BAR ± 0.2 BAR, ensuring consistent performance during long-haul operations.

System performance and monitoring

Monitoring the adjustment range of 8.5 to 11.0 BAR during routine maintenance can help prevent premature system fatigue and ensure the safety of the entire pneumatic circuit.

OE cross-reference

301.07.0049 (Pressure Limiting Valve) is the equivalent of the DAF, Iveco and WABCO OE numbers. This part directly replaces DAF OE number 1505393. It also replaces Iveco OE number 98413953 and WABCO OE number 4750150320.