Re: plumbing differences
 

Copper fittings are the same, plastic fittings are not. Simples!!!

Then if you are piping radiators, the pipework is different to any I have so far found! Pipework in walls is green and ever so slightly larger than any of the fittings you can find in the normal outlets. I have 9 radiators in storage because I cannot find the plastic fittings to go onto pipework and attach to the radiators.

I would say buy the radiators in the UK from an outlet like B&Q, they are about half the price of the ones in spain, That is if you are bringing stuff out!

Re: plumbing differences
 

Thank you for the info, fortunately the house has under floor heating, so no radiators, but the copper information is much appreciated.:)

Re: plumbing differences
 

Unless of course you come across the 18mm. ;-))