Johnson & Starley Flow Switches

Johnson & Starley Flow Switches also sometimes called a flow sensors are a device commonly fitted internally to Johnson & Starley boilers and this boiler part senses when a hot water tap outlet has been opened (turned on) and there is demand for hot water, the water moves through the flow switch and then switches the boiler ignition sequence so that the domestic hot water is provided at the tap. All our Johnson & Starley Flow Switches are new and genuine manufacturer spares.