Mixing metals on compression fittings

[Hillabaloo]

Annoyingly I have used a copper nut on a steel isolation valve and the corresponding steel nut on a compression copper fitting (15mm). Should I dismantle and redo? I will have to buy a length of plastic pipe and new olives as well as drain system. Or will it be OK?

 

[chris watkins]

Are you sure it is steel & not a chrome plated brass fitting? It would be very rare for steel to be used as it rusts.

 

[king of pipes]

I very much doubt you have ? Never seen a copper nut on a steel valve i think you are getting confused please post a picture so we can see your delemia. Kop

 

[Hillabaloo]

The fitting was from screwfix described as brass, steel and plastic.

https://www.NoLinkingToThis/c/heati...p=managedredirect-_-plumbing-_-isolatingvalve

I attach two photos. Thanks for help so far

 

[Riley]

You’re fine
Your bigger issue would be if you haven’t put inserts in the plastic pipe or the wrong sort of insert

 

[Last Plumber]

It will be fine (as long as you used inserts mentioned).
For future reference, the valve is Brass which has been Chrome plated and the gold coloured nut is Brass. There are stainless steel and plastic components inside the valve.

 

[Hillabaloo]

Thanks very much for the replies. A great relief. I did use inserts in the plastic pipe.

 

[Riley]

Is it Speedfit?

 

[Hillabaloo]

Yes. Hard plastic inserts.

 

[ShaunCorbs]

The ones with the extra blue o ring eg the super seal ones ?