Large-diameter flow regulation electromagnetic valve

The invention provides a large-diameter flow adjusting electromagnetic valve which comprises a valve body assembly, a diaphragm assembly, an inlet proportion adjusting valve and an outlet proportion adjusting valve, an inlet cavity is formed in one side of the valve body assembly, an outlet cavity is formed in the other side of the valve body assembly, and the inlet cavity and the outlet cavity can be communicated through a valve port; the diaphragm assembly is movably installed at the valve port and used for opening and closing the valve port. A pressure adjusting cavity is formed in the upper side of the diaphragm assembly, the inlet cavity communicates with the pressure adjusting cavity through an inlet channel, and the pressure adjusting cavity communicates with the outlet cavity through an outlet channel. The inlet proportioning valve and the outlet proportioning valve are correspondingly installed at the inlet channel and the outlet channel respectively and used for adjusting the pressure of the pressur