303.02.0107 4-circuit protection valve — DAF

This 4-circuit protection valve is a critical component within the pneumatic brake system, designed to manage air distribution and protect the primary circuits from pressure drops. Constructed with heavy-duty grade materials, it ensures consistent air pressure regulation across multiple circuits, maintaining the operational integrity of the vehicle's braking performance during heavy-duty service.

303.02.0107 is the OE-equivalent of the DAF ACHA001 4-circuit protection valve used in DAF and WABCO systems. This part is engineered to meet the rigorous standards required for heavy commercial vehicles and is fully compatible with WABCO systems and other compatible hardware architectures found in professional transport fleets.

For workshop technicians, this valve provides reliable assembly through its standardized port configurations: Port 1 (M22x1,5) and Ports 21 through 24 (M16x1,5). The specific opening pressures—7,2 BAR for ports 21 and 22, 7,7 BAR for port 23, and 7,3 BAR for port 24—ensure precise control during system fluctuations. Regular maintenance of the pneumatic lines and checking for leaks at these connection points is recommended to ensure long-term reliability.

Installing this component helps maintain stable air pressure within the braking system, preventing unintended circuit failures. It is an essential part for maintaining the safety and performance of heavy commercial vehicles in demanding environments.