CPS flow sensor or Turbine Kit diverter valve, is a directional water device that only appears in combi boilers. It allows the hot water to be redirected to the central heating like radiators, etc. or to the domestic hot water system like taps, etc. This feature is what separates a normal boiler from a combi boiler due to the fact that a combi boiler wouldn't require a cylinder to provide heating and hot water.
Supplier part number is 5114767
Technical specification
ERP (Energy Efficiency)NERP RatingNot ApplicableSupplier Part Number87161156820Brand NameWorcester Bosch
Reviews
Worcester Bosch Worcester 87161156820 WASHER 1 in (1X)