Operating structure of pilot-operated solenoid valve

An operating structure of a pilot-operated solenoid valve, the pilot-operated solenoid valve including a valve body having a main valve orifice and a pilot valve orifice, opening and closing of the pilot valve orifice guiding opening and closing of the main valve orifice;

• the valve body being formed with an accommodating chamber, the pilot valve orifice communicating with the accommodating chamber;
• the operating structure including a knob, an adjustment rod, and a water stop nut;
• the knob being positioned and fitted to an opening of the accommodating chamber, the adjustment rod being hermetically fitted in the accommodating chamber, a first end of the adjustment rod being threadedly connected to the knob, a second end of the adjustment rod being connected to the water stop nut;
• the adjustment rod being movable along an axial direction of the accommodating chamber with rotation of the knob to drive the water stop nut for opening and closing the pilot valve orifice to control the opening and closing of the main valve orifice.