1. Features: - Automatic control without electricity, more stable and sensitive. The water flow of the valve is controlled by the up - and - down movement of the float ball inside the valve, and a filter screen is also equipped to filter impurities in the water. 2. Product uses: Automatic water replenishment for water tanks, solar energy systems, livestock drinking water, aquaculture, etc. 3. This valve replaces the traditional float valve. It doesn't require electricity, is easy to use, has a long service life, a low failure rate, and can save water resources. 4. You can select the most suitable ball valve according to the specific situation of the water tank and the length of the external pipe. 5. The installation process is simple and fast; it has a large water output and can quickly restore the water level. 6. Notes: - Due to different display monitors and lighting effects, the actual color may slightly differ from the picture. - Due to manual measurement, a deviation of 1 - 3 cm is allowed. 7. Dimensions: As shown in the picture. 8. Included: 1 set of water float ball valve