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.
^ The downstream side contains high pressure refrigerant gas.
^ A serviceable high pressure A/C charge port valve is located on the downstream side.
^ The downstream side also contains a fitting used to mount the A/C pressure cut-off switch. A long-travel Schrader-type valve stem core is installed in the fitting so that the A/C pressure cut-off switch can be removed without discharging the A/C system.