thanks guys. looks like the rad tail nuts have been repeatedly painted over ... will be a pleasure to unscrew. i've already cursed the previous owner more than once for other botched jobs!!
hi,
our heating system runs with 8mm or 10mm microbore pipes and the radiators are all fitted with this kind of valve:
i haven't found anything comparable anywhere on the web, and certainly not TRVs that would be compatible... maybe somebody knows what they are and how they can be...