What this product does and why you need it Auto-fill replacement float valve that keeps water at the correct level without constant monitoring. Prevents overflow and avoids dry tanks, saving time and reducing water waste. Portable, compact design lets you move or replace it quickly when servicing ponds, aquariums, or water storage tanks. Key benefits Reliable automatic filling: large water flow for fast replenishing and high efficiency during refills. Leak-resistant sealing: engineered to provide a good seal that minimizes dripping and leakage. Durable construction: made from plastic and PE (polyethylene) for corrosion resistance and long service life. Tool-free installation and adjustment: install the valve without special tools and set the desired water level quickly. Important attributes Function: automatic float valve for maintaining a preset water level in tanks and systems. Compatibility: designed as an auto-fill replacement part for ponds, fish tanks, and water tanks. Material: plastic body with PE components for durability and chemical resistance. Performance: large flow capacity and effective sealing for efficient, reliable operation. Portability: compact, easy to handle and relocate as needed. Easy installation (quick steps) 1. Attach the float valve to the water inlet or fitting on your tank or system. 2. Secure the connection and hand-tighten — no special tools required. 3. Adjust the float to set the desired water level and test for proper shutoff and sealing. Typical applications (practical scenarios) Backyard pond auto-fill: keeps pond water level steady after evaporation or splash loss, protecting pumps and filters. Aquarium top-off systems: maintains stable water levels in fish tanks and planted aquariums to avoid stress on aquatic life. Water storage tanks: automatic refilling for domestic or small-scale agricultural tanks to ensure continuous supply. Why this float valve stands out Combines a high-flow design with dependable sealing and durable PE/plastic construction for a low-maintenance replacement part that restores or upgrades automatic fill systems. Note: Designed specifically as an auto-fill replacement float valve for ponds, fish tanks, and water tanks; installation is straightforward and adjustment allows precise control of fill level.