Vaillant Diverter Valve is a device that only appears in combi boilers. It allows the hot water to be directed to the central heating system (radiators, etc.) or to the DHW system (taps, etc.). This feature is what separates a normal boiler from a combi boiler.
Comes with Screws and Gaskets
Technical specification
TypeDiaphragm KitColourMixedSupplier Part Number10365Brand NameVaillant