This Fuel Flow Switch ELF series of liquid flow switches are used to signal and control liquid flow in pipelines controlling pumps, compressors, chillers, boilers, valves and other units, these are used to monitor pump operation or switch alarms in the event of flow failure. They are suitable for use with hot water, chilled water, diesel oil and up to 30% glycol systems.
The fuel flow switch switches are equipped with a metal paddle (1″, 2″ and 3″ paddles are provided) this is immersed in the fluid. When the flow rate reaches the threshold level, the paddle operates a switch by means of a lever mechanism. The switch point can be adjusted (between
a minimum and a maximum) by turning the setting screw. Flow switches are used as protection devices in all applications where fluid needs to flow round a circuit to ensure that the installed devices work properly and are protected against damage.