Tank Automatic Valve Automatic level control: regulates flow to maintain a preset liquid level. Filling stops when the level reaches the upper point and resumes as it drops, preventing overflow and reducing monitoring needs. Durable materials: brass body with a plastic floating ball for strength and long service life. Rubber seal provides reliable, leak operation and can withstand temperatures. Easy to install and size options: available in 1/2 inch (DN15), 3/4 inch (DN20), and 1 inch (DN25). Simple to connect to standard supply tubes and adjust the level for your application. Leak protection: quality rubber seal ensures tight sealing and minimizes leaks and drips. Broad compatibility and performance: suitable for domestic water tanks, rainwater harvesting, and storage tanks; designed for common pipe fittings and normal operating environments. Practical use scenarios: in a home rainwater collection system to prevent overflow; in an irrigation or storage tank to maintain a target level automatically; in a utility or wash tank to keep a stable level with minimal supervision. This valve provides reliable levelbased filling control, easy sizing, and dependable performance for everyday water tank applications.