Difference between solenoid valve and electric valve

1、工作性质：

1. Nature of work:

电动阀的驱动方式一般是用电机，比较耐电压冲击。电磁阀是快开和快关的，一般用在小流量和小压力，要求开关频率大的地方电动阀反之。电动阀的开度可以控制，状态有开、关、半开半关，可以控制管道中介质的流量而电磁阀达不到这个要求。

The driving mode of electric valve is generally motor, which is more resistant to voltage shock. The speed of opening and closing the solenoid valve is generally high, and the speed of opening and closing the solenoid valve is low. The opening of the electric valve can be controlled, and the states are on, off, half on and half off, which can control the flow of medium in the pipeline, while the solenoid valve can not meet this requirement.

电磁阀一般流通系数很小，而且工作压力差很小。比如一般25口径的电磁阀流通系数比15口径的电动球阀小很多。电磁阀的驱动是通过电磁线圈，比较容易被电压冲击损坏。相当于开关的作用，就是开和关2个作用。

Generally, the flow coefficient of solenoid valve is very small, and the working pressure difference is very small. For example, the flow coefficient of 25 caliber solenoid valve is much smaller than that of 15 caliber electric ball valve. The solenoid valve is driven through the solenoid coil, which is easy to be damaged by voltage shock. It is equivalent to the function of switch, which is on and off.

电磁阀一般断电可以复位，电动阀要这样的功能需要加复位装置。

Generally, the solenoid valve can be reset after power failure, and the electric valve needs a reset device for such a function.

2、开关形式：

2. Switch type:

电动阀的驱动一般是用电机，开或关动作完成需要一定的时间模拟量的，可以做调节。

The drive of electric valve is generally completed by motor. The opening or closing action requires a certain amount of time and analog quantity, which can be adjusted.

电磁阀通过线圈驱动，只能开或关，开关时动作时间短。

The solenoid valve is driven by coil and can only be opened or closed. The action time is short when opening and closing.

3、适用工艺：

3. Applicable process:

电动阀一般用于调节，也有开关量的，比如：风机盘管末端。

Electric valves are generally used for regulation, and there are also switching values, such as the end of fan coil.

电磁阀适合一些特殊地工艺要求，比如泄漏、流体介质特殊等，较贵。

Solenoid valve is suitable for some special process requirements, such as leakage, special fluid medium, etc., and the price is expensive.

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