S-Type (X200) V6-3.0L (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.
prevent damage to the A/C compressor and other system components.
avoid total refrigerant loss by closing after the excessive pressure has been relieved.