Compressor Fitting HVAC: Description and Operation

Refrigerant System (R-134a), Components

High Pressure Service Valve Assembly







A - Service valve connection (located on condenser inlet line)
B - Schrader valve insert
C - O-ring seal
D - Cap with seal


NOTE:
- Only a high pressure service valve is used for A/C system servicing. A low pressure service valve is not installed in the A/C system. Perform all A/C system service operations (i.e discharging, evacuating, and charging) through the high pressure service valve only.
- Use only the specified R-134a quick coupling connectors when servicing the refrigerant system.
- Before removing the valve insert from the high pressure service valve, discharge refrigerant system.
- Always reinstall cap -D- over service valve.
- Illustration shows the condenser from an Audi 100 model.