Quick-Release Coupling Connections In Refrigerant Circuit

Quick-release Coupling Connections In Refrigerant Circuit

- Only valves and connections resistant to R134a refrigerant and the related refrigerant oils are to be used.
- There are different connections (OD) for high and low pressure sides.
- Discharge refrigerant circuit before removing valves or valve inserts.
- Always screw on sealing caps.
Arrangement in vehicle

Connections with Schrader valve







A Service connection (soldered in)
B Schrader valve insert
C O-ring (for valve)
D Cap with seal

Connections with primary sealing valve

CAUTION: Before unscrewing connection, connect A/C service station and extract refrigerant. Refrigerant circuit must be empty to avoid possible injury.

Connection with high-pressure valve







1. Socket with external or internal thread
2. O-ring: 10.8 mm; 1.8 mm, identification: black or colored
3. Valve with groove for O-ring and external or internal thread M 8x1 for cap
4. O-ring for cap: 10.8 mm; 1.8 mm, identification: black or colored
5. Cap

Connection with low-pressure valve







1. Socket with external thread and groove for O-ring
2. O-ring: 7.6 mm; 1.8 mm, identification: black or colored
3. Valve internal thread for cap M 8x1
4. O-ring for cap: 7.6 mm; 1.8 mm, identification: black or colored
5. Cap