Instead of the traditional float valve. It will automatically control the water supply and stop the water supply according to the water level changes. It can solve the problem of water leakage and save more than 60 percent of water. Suitable for industrial applications such as water tanks, water towers, livestock and poultry drinking water, air cooling, hydroponics, machinery, humidifiers, swimming pools, toilets, solar energy, hot water boilers, aquariums, etc. When the water level rises to the water level limit line, the water level control valve will immediately stop water supply when the water level , the valve will automatically start water supply. Small size and easy to install. Since this product is a valve that can move automatically, it needs regular inspection and maintenance Name: Automatic water level control valve Colour:Whiteandblue Material:nylon Size:11.5 x 7.5cm Package Contents: 1 x Four points side inlet water level control valve 1 x raw material 1 x Water outlet elbow 1 x English manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.