A Flow Switch is an essential safety and monitoring device used to detect the movement of water or other liquids within industrial chillers, HVAC systems, refrigeration units, pumps, and process-cooling equipment. It helps ensure that the required liquid circulation is available before the compressor or connected machinery begins operation.
When the fluid flow drops below the preset level or stops completely, the switch sends a signal to the control panel to shut down or protect the equipment. This helps prevent compressor damage, overheating, freezing, pump failure, and unnecessary system downtime.