USED, YEAR OLD! 12 Liter Central Heating External Expansion Vessel. comes as a whole kit with the wall bracket for the expansion vessel + the 3 bar safety valve + fill up loop (isn't shown in photo) THIS WHOLE KIT IS COMPRIMISED OF TOP QUALITY BRANDS/PARTS IN THR PLUMBING INDUSTRY! was only removed due to upgrading to a system boiler. vessel pressure has been checked and all good. Safety has never lifted. NEW OLIVES. All ready to go. perfect for converting your heating system to a sealed/ pressureised system instead of open vented. Or just adding as an external due to boiler internal expansion vessel failing.