The pump is located after the primary heat exchanger within your appliance and allows the heated water to be moved within the closed heating system. In the design of most combi boilers, the pump is usually situated before the diverter valve to allow circulation through the DHW and central heating systems.
For V4043H Zone Valves
Technical specification
Waist Sizeab34ce57fxTypePump headToilet Cistern CapacityFTW--Supplier Part Number40003916-001/UBrand NameResideo