R134a refrigerant oil mixture attacks certain metals like copper and dissolves some hose materials — this page explains why only genuine replacement parts should be used for Volkswagen Golf Mk7 refrigerant lines.
| The mixture of refrigerant oil and refrigerant R134a attacks
certain metals (e.g. copper) and alloys and dissolves certain
hose materials. Therefore, always use genuine replacement parts. |
| The hoses and pipes are held together with screwed joints or
special push-fit joints. |
 Note
| When assembling screwed joints, be careful to comply with
the prescribed torques, and when working on push-fit joints, be
careful to use the disconnection tools provided. |
|
Questions & answers
Pipes and hoses in refrigerant circuit — Volkswagen Golf Mk7
What pipe materials are used in the Golf Mk7 AC system?
Aluminium pipes and nylon-barrier hoses. R134a/oil mixture attacks copper and certain alloys — only approved materials may be used.
These O-rings seal the joints between the individual
components of the refrigerant circuit.
Use only seals that are resistant to refrigerant R134a an ...
The high-pressure safety valve is fitted to the air
conditioner compressor or the receiver.
The valve opens at a pressure above approx. 38 bar and
...
