303.02.0088 KNORR-BREMSE Compatible 4-circuit protection valve

The heavy duty 4-circuit protection valve serves as a critical component within the pneumatic brake system, ensuring that pressure is distributed correctly across multiple circuits to maintain braking functionality even during system fluctuations. This component is engineered to provide reliable pressure regulation and safety for heavy commercial vehicles.

This product is the OE-equivalent of the KNORR-BREMSE AE 4406 4-circuit protection valve used in professional braking systems. It maintains high precision with an opening pressure of 7 BAR and a closing pressure of 4,5 BAR for all four ports (21, 22, 23, and 24). The technical specifications include one M22x1,5 port and four M16x1,5 ports to ensure seamless integration with existing pneumatic lines.

For workshop technicians, this part offers straightforward installation and long-term durability in demanding environments. Regular checks of the port seals and pressure thresholds are recommended during routine brake system maintenance to ensure optimal performance. The robust construction ensures that the valve remains operational under heavy-duty load cycles without compromising the integrity of the air supply lines.