Answer :
Final answer:
The tractor protection valve is designed to close automatically when the air pressure falls into the specified range, typically 20 to 45 psi. This ensures the safety of the braking system and allows the driver to maintain control of the vehicle.
Explanation:
The tractor protection valve is designed to close automatically when the air pressure falls into the pressure range specified by the manufacturer, typically 20 to 45 psi. This valve is an important safety feature in case of air loss in the braking system of a tractor. When the pressure reaches the lower limit, the valve closes, preventing further loss of air and allowing the driver to maintain control of the vehicle.
