The Potterton spare kit filling loop is located within the isolation valve section. The isolation valve can be found underneath the heating appliance and allows the user to change the flow of water and gas into the central heating system. These also allow for the supply to be stopped completely in case of an emergency or a leak.
Used to increase the water within a central heating system
Technical specification
TypeFilling LoopColourMixedManufacturer Model No5119495Brand NamePotterton