Diaphragm type remote control float valves is a hydraulically-operated valves with much function. It is installed at the inlet of spool or water tower.When the water level reach to the setting,the main valves controlled by the pilot valves,close and stop supplying water;when the water level falls downward,the main valves controlled by the pilot valves,opens and supplies water to the spool.The water level is controlled precisely and is not interfered by the water pressure.Floating ball remote control valves can be installed freely according to the spool's height and use space.It is easy to maintain and to inspect the valves.The valves is liable,of high strength and of smooth action and is fot DN450 or less valves.