The isolation valve sits underneath the heating appliance and allows the user to manipulate the flow of water and gas in to the central heating system. These also allow you to cut off the supply to the boiler if there is a leak or emergency .
Supplied with fittings
Technical specification
TypeIsolation Valves and Filling LoopToilet Cistern CapacityFTW--Supplier Part Number3980B841Brand NameFerroli
Reviews
Ferroli 3980B841 Isolation Valves with Filling Loop Optimax HE Plus