Auto Function: The float valve automatically refills water for your water tank, water tower, livestock, animal water drinker when water drops below the valve level. Once it reaches the valve, it would automatically stop refilling water, so it will shut-off when the water reaches the internal float. Easy to install.No Electricity Needed: A ball float valve inside allows water to flow until a specific level is reached. Once the water reaches this level, the float valve will be pushed up with water due to buoyancy and stop the flow of water. the valve body starts the water supply when the water level in the water tower rises, the floating ball floats up, and the connecting rod drives the plunger. No need electricity.Small Body, Large Displacement: The float valve comes with filter, the filter must be used in the water inlet, avoid sand and stone blocking the floating ball. This product is small and does not take up space, and it is superior to the traditional process to effectively increase the water output, which is more than the traditional float valve.Safe and Durable Materials: 304 stainless steel fully automatic water level control float valve is made of food grade material, ensuring the safety of drinking water. With an exquisite appearance and durable hard shell, it has strong friction and impact resistance, effectively increasing the service life of the product, and making friction in life no longer a problem.Wild Scope of Application: Applicable ambient temperature compared with other ball valves, the stainless steel shell has a higher melting point, high-temperature resistance, corrosion resistance, waterproof and fire prevention, for a rain gutter garden project, using it to make an automatic shut-off for swimming pools, for chicken coops, for automatic chicken water drinker, and is widely used. Note: The data are all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.