Ok folks, I am in need for some assistance. Please see pictures attached. I have two connections for hot and cold water coming out if the wall and now I need to connect to these. However.....when I use a wrench on the black plastic thing it turn without turning the metal plug inside and since the metal plug has a round hole only I.e. no hexagon or similar I do not know how to remove the plug.

Any suggestions....apart from calling a plumber?

Hi Ellg.
These plastic things, are fitting protections.
Here in Switzerland the plumbers screw them on the outside of the metal wall fittings. They are there to protect from the wall plaster and tile cement.
You can just unsrew the plastic, which is not a part of the fitting and inside you should have a brass hexagon plug.
Hope this helps.

Salut Zämma

Well......they do not come off that easy. I have turned them a lot of full rounds and nothing moves as I would like it to.

Maybe I should be a bit more violent....

Hi Elgg.
Take a hammer and a small screwdriver and scrape away some of the plaster around the plastic. Clean the plaster out of the hole with a Hover.
Now turn the plastic and at the same time pull on it.
It seems the ones you have, are without a thread.
Do not use too much force, the wallfitting inside the wall could be out of plastic(look below in "Boxs"). Call the plumber!
Here is the site of the fittings manufacture. http://ecat.georgfischer.com/mediaco...9eb273&lang=en
Your fitting is in "Boxs or Modules"
Salut Zämma

Mission completed.

I took the plastic part of by ripping it apart. It was attached to a metal plug (which had a ½" thread) but since the plug was very tight (mounted 25 years ago) the plastic thing could not bring the necessary torque to loosen the plug.

A big spanner did the job when the plastic were gone.

Thanks for the inputs.

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