does copper fuel pipe have to have any markings for the sva?

no marks on mine and not fuel pipe either,
micro bore heating pipe fom bee n queue.
no coment at sva

thank u

same here, Plumb Centre Ø8mm microbore central heating pipe and no issues at SVA.

I used the B&Q stuff as well.

Stu

^^^ditto

James

I used stainless braided rubber pipe for mine right through, no markings and no comment at SVA. They seem more concerned about the filler neck pipe - cant work out the logic on that one!