F 550 2WD Super Duty V10-6.8L VIN S (2000)
High Pressure Safety Valve HVAC: Description and Operation
A/C Compressor Pressure relief valve
An A/C compressor pressure relief valve is incorporated in the compressor A/C manifold and tube to:
^
relieve unusually high refrigerant system discharge pressure buildups, (3103 kPa [450 psi] and above).
^
prevent damage to the A/C compressor and other system components.
^
avoid total refrigerant loss by closing after the excessive pressure has been relieved.
