Refrigerant Circuit Connections With Switch Valve

WARNING: This page is about a different car, the 2023 Audi S3, 2023 Audi RS 3, 2023 Audi A3 Quattro, and 2023 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

There are different threads for the switch on the high pressure and low pressure sides.
Only valves and O-rings that are resistant to refrigerant R134a and refrigerant oil may be used.

Fig 1: Exploded View Of Refrigerant Circuit Connections With Valve For Switches
Courtesy of AUDI OF AMERICA, LLC

A -Connection (soldered in)

B -O-Ring

C -Valve (with O-ring)

NOTE:

To remove and install the valve insert -C- when the refrigerant circuit is discharged, use, for example, an adapter from the Refrigerant Sockets:T10364 (for the tightening specification, refer to CONNECTIONS WITH SCHRADER VALVE (NEEDLE VALVE) ).