Compressor Fitting HVAC: Description and Operation

The A/C manifold and tube is attached to the A/C compressor, is sealed with O-ring seals, and has the following features:
- The upstream side contains low pressure refrigerant gas and an integral non-serviceable muffler.
- The downstream side contains high pressure refrigerant gas and an integral non-serviceable muffler.
- The downstream side also contains a serviceable A/C compressor pressure relief valve and a fitting used to mount the A/C pressure transducer. A long-travel Schrader-type valve stem core is installed in the fitting so that the A/C pressure transducer can be removed without discharging the A/C system.