The System Protection Valve regulates airflow by distributing compressed air in a controlled sequence to ensure that necessary systems maintain pressure even if a failure occurs due to air leakage. When the air dryer reaches a set pressure, the valve opens and directs air to the front and rear service brake reservoirs through four outlets. This controlled distribution prioritizes necessary systems, ensuring operational safety. It also prevents pressure loss in other systems, maintaining the minimum required pressure in sound systems after failure.Attributes:• Pressure required to open each valve element ranges between 575 kilopascal and 645 kilopascal.• Valve elements close when the pressure drops to approximately 400 kilopascal.• Pressure setting for all four valve elements should be within a tolerance of 17 kilopascal.Applications: The System Protection Valve is installed in pneumatic braking systems of equipment located near the air dryer and brake reservoirs to regulate air distribution, ensuring that braking and auxiliary air systems receive controlled air pressure for safe operation.