Refrigerant Circuit Connections With Valve For Switches

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2017 Audi S3, 2017 Audi RS 3, 2017 Audi A3 Quattro, 2017 Audi A3, and 2016 Audi S3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Switching pressures, removing and installing switches as well as switch arrangement and version. Refer to REFRIGERANT CIRCUIT (vehicle-specific repair information).

Different threads for switch on high pressure and low pressure sides.
Only valves and seals that are resistant to refrigerant R1234yf and refrigerant oil must be installed.

Courtesy of AUDI OF AMERICA, LLC

A - Connection (soldered in)

B - Seal

C - Valve (with Seal)

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 (Tightening specification. Refer to QUICK-RELEASE COUPLING CONNECTIONS ON REFRIGERANT CIRCUIT ).

There are different versions of these valves and therefore there are different tightening specifications. Valve insert -C- with a VG5 (5.2 x 0.7 mm, tire valve) thread has a tightening specification of 0.4 Nm ± 0.1 Nm; a valve insert with a M6 x 0.75 mm thread has a tightening specification of 0.9 Nm ± 0.1 Nm, and a valve insert with a M8 x 1.0 mm thread has a tightening specification of 2.0 Nm ± 0.2 Nm.