Refrigerant Circuit Quick-Release Connections

Refrigerant Circuit Quick-Release Connections

- 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