Portable float ball valve for automatic refilling and shutoff of 1/2" water lines. Designed as a replacement auto-fill part, it provides reliable flow control and easy installation for a wide range of water systems. Key benefits Automatic water shutoff: The float mechanism closes off 1/2" water flow when the tank reaches the set level, reducing manual monitoring and preventing overfilling. High flow capacity: Large internal passage allows faster filling of ponds, aquariums, and tanks without sacrificing sealing performance. Durable, corrosion-resistant materials: Constructed from plastic and PE (polyethylene) for long-term use in wet environments. Portable and versatile: Lightweight design makes the unit easy to move and use in different locations or as a direct replacement part. Simple installation and compatibility: Fits standard 1/2" threaded connections for quick hookup to most domestic and small commercial water systems. Features Function: Float-actuated valve for automatic fill control and shutoff Thread size: 1/2" compatible for direct replacement on standard fittings Materials: Plastic and PE for durability and water resistance Performance: Large flow capacity with a reliable seal when closed Typical applications Garden ponds and water features: Maintain water level automatically after evaporation or splash loss. Fish aquariums and hobby tanks: Keep stable water level without daily refills. Water storage tanks and utility containers: Automate top-up for small tanks or troughs requiring 1/2" connections. Installation notes Designed for hand-tight and standard plumbing connections; use appropriate thread sealant or tape if required by your system. Check orientation and clearances so the float can move freely for reliable operation. This float ball valve is a practical replacement part to automate refilling on 1/2" systems, offering straightforward installation, dependable sealing, and long-lasting materials for everyday water management tasks.