DN-25 Fully automatic float valve for water level control. It provides automatic, precise regulation of water level in tanks, towers, swimming pools and other applications. Easy installation and operation. The compact design allows quick installation. It operates with up to 40 psi and 3 GPM. No complex wiring or power is required, offering user-friendly and convenient control. Energy saving and reliable. This valve works without electricity, delivering energy savings with a long service life and low failure rate, helping to reduce operating costs and conserve resources. Environmentally friendly. Made of safe materials and does not emit harmful substances, contributing to a clean and efficient water control system. Typical applications: - Tanks and towers in buildings - Swimming pools and spas - Outdoor irrigation and water features