DJ745X diaphragm type electromagnetic remote control float ball valve is a double-safe hydraulic operated valve with both electromagnetic valve and remote control float ball valve functions. When the water level reaches the set height, the main valve is controlled by the float ball guide valve to close the water inlet and stop the water supply. When the water level drops, the main valve is controlled by the float ball guide valve to open the water inlet and inject water into the pool to realize automatic water supplement. Solenoid valve plays a protective role, in the float valve failure, high water level switch set to the position when the switch trigger solenoid valve closed, thus closing the main valve. Precise level control, free from water pressure interference. Diaphragm type remote control float valve can be installed with the height of the pool and any position of the use of space, maintenance, debugging, inspection convenient, reliable sealing, long service life. Diaphragm valve reliable performance, high strength, smooth action suitable for less than 450 caliber pipeline.