Premium Plastic: Made of food-grade plastic for drinking water pipes and 304 stainless steel screws. Eco-friendly and durable to prevent rust. Easy to Install: Compact size with an estimated flow rate of up to 3 gallons per minute at 40 PSI and 5 gallons per minute at 60 PSI. Excellent Durability: This valve replaces traditional float valves, operates without electricity, offers easy operation, long service life, low failure rate, and helps conserve water resources. Automatic Control: The upgraded water level control valve features a patented design for full automatic operation without electrical power. Wide Applications: Suitable for use in water tanks, water towers, swimming pools, solar systems, toilets, hot water boilers, animal drinking water systems, air cooling, humidifiers, residential buildings, cooling towers, and steamers.