Check the listing for details. 1/2" 3/4" Float Ball Valve Auto Float Water Shut off Valve Stainless Steel. Condition: New, Made in China. Listed at 19.79 USD. 1. 304 Stainless steel water level control float ball valve is high temperature resistant, not easy to corrode, long service life. Smooth appearance, no rust, very safe.2.Automatic water level control float ball valve can work normally without electricity. When the water surface drops, the float drops, and the pressure of water in the water pipe is used to open the sealing silicone plunger in the valve body, and the valve body opens the water supply; When the water surface rises, the float floats up, the connecting rod drives the sealing silicone plunger into the water hole, stop supplying water.3.Easy to Install：Screw the automatic floating ball water level control valve to the water pipe, and then adjust the water level, it can work normally.4.Wide Appli.