At what PSI does the air compressor governor cut in?

The air compressor governor typically cuts in at 100 PSI. This is important because it marks the pressure level at which the governor allows air to flow into the air tanks of a vehicle, ensuring that the system maintains adequate air pressure for the brakes to operate effectively.

Understanding the cut-in pressure helps drivers manage their vehicle's air supply system, which is crucial for safe operation, especially in commercial vehicles that rely on air brakes. Keeping the air pressure within the specified range ensures that the brakes engage properly and function reliably under different driving conditions.

This knowledge is essential for drivers, particularly those operating heavy vehicles or trucks, as maintaining the correct air pressure is vital for vehicle safety.