Solenoid valves are generally FAF small and very small pressure difference

Solenoid general circulation coefficient is small, and the work pressure difference is small. Such as general circulation of the solenoid valve 25 caliber caliber coefficient than 15 electric  Electric transformer  smaller. The solenoid valve is driven by the electromagnetic coil, relatively easy to voltage impact damage. Equivalent to the role of the switch is on and off 2 effect. Electric valve drive motor is generally used to  air circuit breaker  voltage shocks. Solenoid valve is a fast opening and fast-related, generally used in low flow and small pressure on the switching  circuit breakers  large electric valve vice versa. Electric valve valve opening can be controlled, the state has on, off, half open half closed, you can control the flow rate of the media channel solenoid valves to meet this requirement. General off solenoid valve can be reset, electric valves need to add this functionality to reset the device.