Portable float valve for autofill systems. Designed for easy retrofit and flexible placement in ponds, fish tanks, rain barrels, and other water containers. Clear benefits: maintains a stable water level with automatic refilling, reducing manual offs and preventing overflow or dry runs. flow and reliable seal: delivers efficient water filling while minimizing leaks. Durable construction: made from sturdy plastic and PE for corrosion resistance and long service life. Easy installation: no special tools required; attach to the water source and set the desired level with the builtin float. Compatibility: fits standard tubing and fittings and is adjustable to suit different container sizes. Practical use scenarios: Outdoor pond or water feature to keep water at the right level. Indoor fish tank or sumps to automatically off water loss. Rain barrel or storage tank to maintain constant water level during irrigation. Hydroponics reservoir to regulate nutrient solution fill.