Features: When the water level is below the valve level, the float valve automatically replenishes water for tanks, water towers, and livestock drinking containers. Once the desired water level is reached, it automatically stops filling, closing as the water lifts the internal float. This valve replaces traditional ballcocks, requires no electricity, is easy to use, has a long service life, low failure rate, and helps conserve water. Widely used in water tanks, water towers, swimming pools, solar heating systems, toilets, hot water boilers, animal watering systems, air cooling units, humidifiers, residential buildings, cooling towers, steamers, and more. The internal floating ball mechanism allows water flow until a specific level is reached. As the water rises, buoyancy lifts the valve to stop inflow. When the level drops, the valve reopens to resume water flow—no electrical power required. Ideal for maintaining water levels in garden waterfalls, fountains, rainwater harvesting systems, swimming pools, poultry houses, automatic watering fountains for chickens, cattle watering during drought, and outdoor rainwater collection containers. Package Includes: 1x Automatic Water Valve Specifications: Material: Plastic + Rubber Size: As shown Type: 6 Types Optional Note: 1. Please allow 1-2 cm differences due to manual measurement; ensure you are comfortable with this before ordering. 2. Due to variations in monitor displays, the image may not reflect the actual color of the item.