Water solenoid valve are mainly used in commercial, industrial, construction, sprinkler irrigation equipment etc, It is suitable for use with water or liquid as working medium, it can automatically control or remote control of water, oil, liquid and other work media pipeline on and off, Its use method is that when the coil is energized, electromagnetic force is generated to suck the movable iron core, the medium in the main valve cavity is leaked from the pilot valve port, so that a pressure difference is generated, the diaphragm or the valve cup is quickly lifted, the main valve port is opened, When the coil is powered off, the magnetic field disappears, the movable iron core is reset, the pilot valve port is closed, and the pressure in the pilot valve and the main valve chamber is balanced, the valve is closed again.The advantage is that the cleanliness of the working medium is greatly reduced, the opening and closing is rapid ,the reliability is high, the use of direct moving diaphragm structure without pressure to start, expand the field of its use,the use of flat diaphragm structure is reliable opening and closing, enhance the service life of the product.