4PCS Float Ball Valve DN15 1/2 Inch ABS PE Water Tank Humidifier Mini Float Valve with Adjustable Arm for Automatic Water Level Control 1Durable ABS and PE Material: The float ball valve is made from premium engineering plastics ABS and PE (polyethylene), promising resistant to corrosion or rust, ensuring reliable durability that stands the test of time. 2Perfect Size and Adjustable Design: The water float valve comes with a 1/2 inch pipe thread and can connect to a 1/2 inch supply pipe. Its adjustable arm design allows easy modification of different water levels, ensuring a simple operation. 3Package Includes: The package comes with a set of 4 water tank float valves, allowing you to spend less time filling and checking water tanks to protect your plants from drying. 4Suitable Conditions: Built for versatility, this float valve can adapt to water temperature from 0 to 70 degrees Celsius and a water pressure from 0.01 to 1.2MPA. With excellent water control ability, a great user experience is guaranteed. 5Wide Application: This float valve finds its uses across a range of scenarios, from ponds, small water tanks, marine toilets, home water purifiers, to pools, aquariums, aquaculture, reservoirs, and industrial large water tanks.