What is the purpose of a brake debooster valve?

The purpose of a brake debooster valve is to operate brakes that are designed for lower pressure. This device is typically used in aircraft systems where the hydraulic pressure from the main system is too high for the brake system, which may be designed to function effectively at lower pressures. By reducing the pressure before it reaches the brakes, the debooster valve allows the braking system to operate safely and efficiently without the risk of damage or ineffective braking performance.

This functionality is essential in ensuring that the brakes engage properly under the operating conditions for which they were designed, enhancing overall safety and control during aircraft operation.