Biasi Magnetic Flow Switch and Filter BI1091502.
City Plumbing
The Biasi flow switch acts as a safety device. It is a switch with an in-built sensor that sits in the pipework for both the heating and domestic hot water systems.
Direct Heating SparesBIASI BI1091502 MAGNETIC FLOW SWITCH + FILTER. Genuine brand new Biasi product, covered by a Biasi manufacturer's guarantee.