100X remote controlled floating valves are installed on the inlet of a water pool or tower. The main valve is controlled by the floating pilot valve to close the inlet to stop water supply when the water level gets to the set height and to open the inlet to supply water to the water tower or pool so as to realize the automatic water supplement when the water lever lowers. It features a high accuracy of level control, water pressure disturbance resisting, mountable on any positions, reliable seal performance, easy installation, maintenance, debugging and check, long duration.