Which component controls the release of air from the brake chamber?

The built-in brake valve is responsible for controlling the release of air from the brake chamber in an air brake system. When the driver applies pressure to the brake pedal, it activates the brake valve, which allows air to flow from the brake chamber and engages the brakes. This process is essential for stopping or slowing down the vehicle effectively.

The design of the brake valve allows for precise control over how much air is released, enabling smoother braking. When the brake pedal is released, the brake valve also manages the return of air to the brake chamber, allowing the brakes to disengage and the vehicle to move freely again.

Other components like the air compressor are involved in supplying air to the system, while the electronic brake controller may help manage braking in vehicles with advanced braking systems. However, they do not directly control the release of air from the brake chamber in the same way that the built-in brake valve does.