THE AUTOMATIC WATER LEVEL CONTROL VALVE is a patented product, which is lnstead of old float valve.It automatically supply and stop water according to the water level change. Product Principle: When water level rise to water limit line, water level control valve will stop supplying water at once; when water level of water tank fall down, the valve will start to supply water automatically. NOTICE 1. Water pressure: min 0.1kg; max 10kg 2. Before installing, please clean the impurities in the pipeline to avoid blocking the valve. 3. This product must vertically installed on level surface. 4. The valve should be fixed horizontally and connected the water level control valve with the tank inlet. MAINTENANCE If water is not very clean and with some impurities, the valve should need proper maintenance. When user find water supply time prolonged or the valve can't close automatically, please unload the valve and clean it.