What is the acceptable leakage rate at the bottom of the moisture ejector valve?

The acceptable leakage rate at the bottom of the moisture ejector valve is that there should be no leakage. This is crucial because any leakage can lead to moisture accumulation in the air system, which can affect the performance and safety of the braking system. Moisture can create issues such as brake fade, reduced braking efficiency, and potential freeze-ups in cold conditions. Therefore, ensuring that the moisture ejector valve is completely leak-free is vital for maintaining the integrity of the air system in school buses, promoting optimal operation and safety.

In air systems, permissible leakage rates are specified to ensure that systems remain effective under various conditions. While some options suggest specific limits for leakage in terms of soap bubbles, these do not align with the standard protocol, which emphasizes the necessity of a complete seal.