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: small size , estimated flow rate up to 40 PSI 3 gallons per minute, 60PSI 5 gallons per minute. Excellent durability: the valve replaces the traditional float valve, no electricity, easy to operate, long service life life, low failure rate and save water resources. Automatic control: The upgraded water level control valve has a patented design, fully automatic control, and does not need to be driven by electricity. Wide Applications: Can be used for water tanks, water towers, swimming pools, solar energy, toilets, hot water boilers, drinking water for animals, air cooling, humidifiers, civil buildings, cooling towers installation, hot water boilers, steamers.