Drive: The coil is energized to become an electromagnet, attracting the movable iron core, opening the channel inside the pilot head, and the air input port p enters the channel inside the pilot head through the channel inside the valve body, pushing the valve core towards the bottom cover to switch the working state of the solenoid valve.
Reset: When the coil is powered off, the channel inside the pilot head is closed, and the valve core is pushed back by the spring at the end of the bottom cover.