Chemical Engineering on Instagram: "Electric Float Switch (Water Tank) An electric float switch is an automatic level-control device used in water tanks to start or stop a pump based on the water level. 🔧 Main Parts Float – A hollow plastic/metal ball that floats on water Switch mechanism – Inside the float (microswitch / mercury switch) Cable / Rod – Connects float to control circuit Pump / Contactor – Operated by the float switch ⚙️ Working Principle Low water level → Float moves down → Switc