How To Judge That The Relay Valve Is Broken

1.First of all, the relay valve damage will usually lead to slow brake return, and even serious hug.

2. The relay valve plays the role of shortening the reaction time and pressure establishment time in the braking system of the truck.

The air inlet of the relay valve is connected to the air storage cylinder, and the air outlet is connected to the brake air chamber. When the brake pedal is pressed, the output pressure of the brake valve serves as the control pressure input of the relay valve.

4. Finally, the compressed air enters the brake air chamber directly through the air inlet without flowing through the brake valve.