A Worcester Bosch diverter valve is an instrument that only appears in combi boilers. It allows the hot water to be directed to the central heating (radiators, etc.) or to the hot water system (taps, etc.).
Fits a number of Worcester appliances
Technical specification
TypeDiverter Valve CartridgeToilet Cistern CapacityFTW--Supplier Part Number87161051320Brand NameWorcester Bosch