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A flow switch is an essential component in heating systems, used to detect the movement of water or other fluids through pipes. In boilers and burners, it ensures that the system only operates when there is adequate flow, preventing damage from dry firing or overheating. This device is commonly employed in central heating systems, hydronic loops, and industrial burner applications to monitor circulation and trigger safety shutdowns if flow is interrupted. Whether for routine maintenance or replacement, a reliable flow switch helps maintain efficient and safe operation of your heating equipment.