I would like to replace a copper pipe - never seen this before!

Hello,

I would like to replace this copper pipe, but unfortunately I don't know how to remove it. At the top, it can be easily pulled off, then it can be turned but not loosened. It turns the copper and the yellow piece as if they were one component. No idea how they are connected or which tool I need to dismantle it. Very strange connection...

Regards, Jan

Very crazy connection...

You should keep your hands off it, the picture looks to me as if it were the transition from copper to plastic pipe and thus the supply or return flow of a radiator. The copper was soldered and on the other side the plastic hose was crimped. You will hardly be able to disconnect it without damage.

Thank you very, very much for your help!

Regards Jan

Morning

The one on the right is a copper pipe and permanently connected with a pressing tool.
On the left is a composite pipe Viega raxofix also a non-detachable connection.

Olli