303.02.0029 4-circuit protection valve — IVECO

This heavy-duty grade component serves as a critical safety element within the pneumatic brake system of heavy commercial vehicles. Designed to regulate air flow across multiple circuits, it ensures stable pressure distribution and protects the system from pressure drops. The robust construction is engineered to withstand high-stress operating environments in the heavy commercial vehicle sector.

303.02.0029 is the OE-equivalent of the KNORR-BREMSE AE 4605, II36650, II36650R, K011255, and K099797N00 protection valves used in IVECO and RENAULT TRUCKS systems. This part is specifically engineered to meet the high standards required for reliable air brake management and circuit isolation.

For workshop technicians, this part features a Port 1 configuration of M22x1,5 and specific Ø9 mm ports for connections 21 through 24. It is essential to verify that the opening and closing pressure settings—such as the 7 BAR opening pressure and the 4,5 BAR closing pressure—align with your vehicle's specific technical requirements during installation to ensure optimal pneumatic performance.

Maintaining precise air pressure regulation is vital for fleet safety. This component provides reliable circuit protection to prevent a single leak from compromising the entire braking system, making it a vital part for maintenance and repair in heavy commercial vehicle workshops.