Port size: 1/2', 3/4', or 1' to fit standard fittings Float valve material: Brass; corrosion resistant brass body and components for long service life Working temperature: 10 to 120 C; suitable for cold and hot water within this range Durability and build: Brass construction provides reliable performance in water applications Key benefits Automatically maintains tank or reservoir water level, reducing manual topping up Prevents overflow and waste by providing a reliable shutoff Flexible installation with multiple port sizes to match common piping Material and compatibility Brass wetted parts resist corrosion, suitable for residential and light commercial use Easy to retrofit into existing tanks and piping systems with standard fittings Use scenarios Domestic water storage tanks and rainwater harvesting systems to keep level steady Agricultural irrigation tanks and livestock troughs to maintain supply Solar hot water systems or small boiler feed reservoirs requiring automatic refilling Note Ensure the selected port size matches your installation and that the system operates within the specified temperature range.