Electromagnetic air valve is two tee electromagnetic directional valve, it through the electromagnet (break) electricity, open (closed) to the valve guide hole, make the reversing valve core, realize reversing, accused of fluid used in hydropower station is surrounded with seal, brake and air can also be used for thermal power, machinery, metallurgy, chemical industry, light industry and other departments, working in medium such as water, air, oil pipeline, to realize the remote automatic control. Advantages: 1. Small size, light weight, reliable operation. With manual operation mechanism. 2. The electromagnet coil is operated for a long time with low driving power. 3. Differential pressure type structure has low requirements on medium.

Working principle: Solenoid air valve is mainly composed of electromagnet, valve body, valve core, valve sleeve and so on. When upper electromagnet field, dynamic and static iron core and off, open the pilot hole and the valve core in the upper and lower end differential pressure under the action of moving down, P cavity with A cavity connected, R cavity with A cavity disconnected, or the side of the magnet excitation, the dynamic and static iron core and off, push the valve core moving up, R cavity with A cavity connected, P cavity with A cavity broken, at the same time ball card into the bottom valve core circular trough, to maintain this state. Manually, make knob B at position 1 and knob C at position 0.