Keep a steady water level automatically — no constant checking or manual refilling Key benefits Set and forget: Adjustable water level control lets you choose the exact fill height you want. The valve opens and refills only when water drops to the preset level, eliminating overflows and dry conditions. Saves time and effort: Automatic refilling maintains a consistent water level so you don’t have to monitor or manually top up tanks, pools, spas or troughs. Simple, secure connection: Built with a 1/2 inch hose fitting and a screwable threaded design for fast, leak-resistant installation. What it is and how it works Function: An automatic water level control valve that senses when water falls to a predetermined point and opens to refill until the set level is reached. Adjustment: Built-in control lets you raise or lower the target water level to match your equipment or application needs. Material and construction: Durable plastic body designed for reliable, efficient operation across multiple settings. Compatibility and performance Size: Standard 1/2 inch hose fitting fits common garden hoses and supply lines; threaded/screwable connection ensures a tight fit. Performance: Automatically maintains an even water level, reducing water waste from overflow and protecting equipment from running dry. Suitable for a wide range of uses: pools, water tanks, spas, livestock water troughs, and other systems that require steady water levels. Quick installation and operation Installation: Screw the valve onto a 1/2 inch supply hose or threaded inlet; secure connection prevents leaks. Operation: Adjust the control to your desired water height. When the level falls to the preset point, the valve opens and refills automatically, then closes when the level is reached. Maintenance: Simple plastic construction is easy to handle and replace as needed. Practical scenarios Pool or spa: Automatically top off evaporation losses overnight so filtration and heating systems run properly and pool water stays at the intended level. Livestock trough: Maintain a constant water supply for animals without daily manual refills, improving animal welfare and saving labor. Household or farm water tank: Prevent pump dry-run and ensure consistent supply to irrigation or household systems by keeping tank levels stable. Why choose this valve Provides reliable, hands-off control of water level for multiple applications Easy to install with a 1/2 inch hose fitting and screwable design Adjustable settings let you tailor the fill height to your system needs Plastic construction offers lightweight durability and straightforward replacement Includes: automatic adjustable water level control valve with 1/2 inch threaded hose fitting for screw-in installation.