The solenoid valve is a magnetic coil that generates magnetic force after the solenoid coil is energized to overcome the pressure of the spring to drive the valve core. The solenoid coil has a simple structure and a low price, and can only be opened and closed;
The electric valve is driven by an electric motor to drive the valve core, and the electric valve is divided into a shut-off valve and a regulating valve. The shut-off valve is a two-position operation, that is, fully open and fully closed. The regulating valve is equipped with an electric valve positioner on it, and the valve is dynamically stabilized in one position through closed-loop adjustment.