303.02.0032 4-circuit protection valve

The pneumatic stability of a heavy commercial vehicle depends on precision components like the 4-circuit protection valve. This component serves as a critical regulator within the brake system, managing pressure distribution across multiple circuits to maintain safety during operation. Designed with high-strength components, it ensures consistent performance under demanding conditions.

The VADEN ORIGINAL 303.02.0032 is the OE equivalent of the Mercedes-Benz 0034316906 and WABCO 9347141250 used in MAN, DAF, and Freightliner vehicles. It is engineered to meet exact specifications for technical compatibility with systems from Alexander Dennis, Daewoo, Liebherr, and Otokar. This part provides precise pressure control with a standard opening pressure of 7 BAR across most ports.

For workshop technicians performing routine maintenance, this valve features specific thread sizes including M22x1,5 for the primary port and M16x1,5 for the secondary ports. Regular inspection of the pneumatic lines and pressure thresholds—such as the 7,5 BAR opening pressure for Port 24—is recommended to ensure optimal system interplay and prevent brake performance issues.

Maintaining professional standards requires using parts that match original technical requirements. This protection valve ensures the pneumatic circuits remain stable throughout the vehicle's service life. Consult your authorized distributor for further technical guidance.