hi the pressure keeps dropping over a period of time and hav noticed water dripping constant from the small overflow pipe can anyone tell me what is causing this .many thanks P.
have your prv checked it may have fauly seal if not it is your expanssion vessel as said before.
hi-spec plumbing, February 2007
YOUR EXPANSION VESSEL HAS GONE. IT WILL NEED TO BE REPLACED BY A PLUMBER. MINE RECENTLY WENT. THE PLUMBER FITTED ONE EXTERNAL OF THE BOILER ( THE CHEAPER OPTION) FOR £150.
