The Vaillant diverter valve is a part that only appears in combi boilers. It allows the hot water to be directed to the central heating (radiators) or to the hot water system (taps). This feature is one of the main reasons that combi boilers are popular.
Fits a number of Vaillant appliances
Technical specification
Waist Sizeaa77cj94gwTypeService KitSupplier Part Number20023721Brand NameVaillant