flatcoat fan

Am in the process of putting in a heating system running off a Villager Woodburner with back boiler, but need a header tank with ball valve as an expansion tank.  Can't seem to find one anywhere - has anyone got any ideas where to buy one. Am living near Limoux but anywhere near would be great, better than having to send to the UK!

Many thanks for that, it is the part that the geometre should have been done prior to the exchange which makes it clear I think that it was the obligation of the seller.

I am in the process of buying some building land which adjoins a field owned by the same vendor.  Is it right that the vendor is obliged, due to a recent change in the law, to have the bornage done at his cost on the land I am buying.  The estate agent is trying to tell me that we should share the costs, but I understood that it was not possible to sell the land without having a bornage done.  please help