303.06.0139 WABCO Complete, ALB Load Sensing Valve

The technical function of this component is to regulate braking pressure based on vehicle load, ensuring optimal stability within the brake system. Designed with high-strength components, this ALB Load Sensing Valve provides precise pneumatic control under varying heavy-duty conditions.

This product is the OE equivalent of the WABCO 475 711 120 0 Complete, ALB Load Sensing Valve used in WABCO systems. It serves as a critical part for maintaining reliable braking performance in heavy commercial vehicle applications. The unit features specific port configurations including Port 1 (M16x1,5), Port 2 (M16x1,5 x2), and Port 4 (M16x1,50) to ensure seamless integration with existing pneumatic lines.

For workshop technicians performing maintenance, this valve is designed for straightforward assembly and long-term reliability. It is essential to verify the port sizes and pressure thresholds—such as the 0,5 BAR empty pressure at port 41/42 and the 6 BAR full pressure at port 2—to ensure correct system-wide compatibility and safety during installation.