The diverter valve is a part that only appears in combi boilers. It allows the hot water to be directed to the central heating system (radiators, etc.) or to the domestic hot water system (taps, etc.).
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Technical Specifications
Toilet Cistern CapacityFTW--Supplier Part Number1.017663Brand NameAlpha
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Alpha 1.017663 Pipe 18mm Diameter Flowconnects Diverter to Sealed Chamber