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This flow switch and filter is a genuine Biasi spare for the Activ A, Activ A Plus, Advance, Advance Plus, Inovia, Riva Advance and Riva Plus HE boilers. The flow switch has an inbuilt sensor that sits inside heating or hot water system pipework as an important safety mechanism. Designed to sense water flow, the switch feeds information to the boiler's printed circuit board (PCB) to ensure that the burner is not activated when the system is low on water or dry. To help you find the right parts for your jobs, go to the industry leading parts identification tool, PartsArena, giving you quick access to over 20,000 exploded diagrams, 10,000 images & 20,000 products. FREE to Wolseley trade account customers.

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