Automatic water level control valve that keeps your water tank, water tower, livestock trough, fountain, or animal drinker topped up without electricity. The built in float auto refills until the water reaches the valve level and then stops, preventing overflow. Key benefits Automatic, no electricity required: The ball float rises with the water and stops flow at the set level; as the level falls, the valve opens again. Easy to install: Small ball float valve with 1/2 inch male thread. Uses BSP pipe thread and is longer to fit most BSP connections. For NPT threads, add a little PTFE tape on the male thread and it will work as well. Durable and safe construction: Stainless steel valve body and screws provide rust resistance and long life. Easy maintenance: Includes a filter at the water inlet to prevent sand and stones from blocking the float. What it does Automatically refills water to a defined level in a tank, tower, or other receptacle. Maintains consistent water availability for livestock, poultry, irrigation, and decorative features. Specifications and compatibility Thread: 1/2 inch male thread; BSP pipe thread (longer male thread for easy BSP fitting). For NPT, use PTFE tape to seal. Operating water pressure: 10 psi to 150 psi Operating temperature: 0 C to 100 C Material: Stainless steel valve body and screws Includes: Inlet filter to prevent blockage How it works Water flows until the internal ball float rises to the level of the valve, at which point buoyancy pushes the float and stops the flow. When water level drops, the float lowers and the valve opens again, restoring flow automatically. Maintenance tips Use the included inlet filter to minimize sand and stone ingress. Inspect periodically for debris and the filter if needed. Applications and use scenarios Garden and landscape: maintain water in a garden waterfall, yard fountain, or rain gutter garden project. Outdoor water systems: provide automatic shutoff for swimming pools, rain collection barrels, or other outdoor water features. Farm and livestock: keep chicken coops waterers and automatic chicken drinkers topped up; support cattle watering in drought conditions. This valve is designed to stay consistent with its stated specifications and functions, offering a reliable, maintenancefriendly solution for automatic water level control in a variety of outdoor and agricultural applications.