Superior to Traditional Technology: The automatic water level control valve is small in size, large in displacement, and space-saving. Superior to traditional technologies, it can effectively increase water flow. No Electricity Required: This automatic water level control valve does not require electricity to operate. It features a float valve that responds to water level and regulates water flow. Extended Product Life: This automatic water level control float is made of stainless steel, which ensures a longer product life and better corrosion resistance. Easy to Maintain: This water level control valve is a high-quality product with a long service life. Made of high-quality materials, it can withstand impact and friction without wearing out. Widely Used: When the water tank is full, this water tank float valve will shut off the water supply and prevent water from overflowing. Suitable for use with any water tank, water tower, swimming pool, or other water supply system. 4-wire interface, pressure resistance 0.2-8 kg.