Town Car V8-4.6L VIN W (1997)
High Pressure Safety Valve HVAC: Description and Operation
An A/C compressor pressure relief valve has been incorporated in the compressor's high pressure discharge manifold:
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to relieve unusually high refrigerant system discharge pressure buildups of 3103 kPa (450 psi) and above.
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to prevent damage to the A/C compressor and other A/C system components.
After the excessive pressure has been relieved, the valve closes to prevent total refrigerant loss.
The A/C compressor pressure relief valve is located in the A/C manifold and tube.
