Structure and Use "This valve is mainly installed at the inlet of a pool or water tower. When the water level reaches the set height, the main valve is controlled by the float pilot valve to close the water inlet and stop supplying water. When the water level drops, the main valve is controlled by the float pilot valve switch to open the water inlet to supply water to the pool or water tower, realizing automatic water replenishment." "This valve has high liquid level control accuracy, is not affected by water pressure, can be installed in any position, has reliable sealing performance, is easy to install, maintain, debug, and inspect, and has a long service life (the float pilot valve can be installed separately from the main valve)."