The isolation valve sits underneath the heating appliance and allows the user to change the flow of water and gas in to the central heating system. These also allow for the supply to be stopped completely in case of an emergency or a leak .
Fits multiple appliances
Technical specification
Waist Sizeab37ch11gtTypeService ValveToilet Cistern CapacityFTW--Supplier Part Number14658Brand NameVaillant
Reviews
Vaillant 014658 Central Heating Service Valve Complete