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排渣阀PZ41H-40C DN150 厂家直销api磅级低温闸阀 低温低压手动铸钢法兰闸阀

Sludge discharge valve PZ41H - 40 c 6 manufacturers selling class API gate valves at low temperature low temperature low pressure cast steel flanged gate valve manually

电动阀的用途：　电动阀：用于液体、气体和风系统管道介质流量的模拟量调节，是AI控制。在大型阀门和风系统的控制中也可以用电动阀做两位开关控制。

　　电动阀：可以有AI反馈信号，可以由DO或AO控制，比较见于大管道和风阀等。

1.开关形式：

　　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。

2.工作性质：

　　电动阀的驱动一般是用电机，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。气动闸阀：借助压缩空气驱动的阀门。

Electric valve USES: electric valve: used for liquid, gas and wind system pipeline medium flow analog control, is the control of AI. In large valve and wind system control can do two switch control with electric valve.

Electric valve: can have AI feedback signal, can be controlled by the DO or AO, is found in large pipe and wind valve, etc.

1. The switch form:

Electric valve is generally used motor, open or close the action it takes time to complete analog, can do to adjust.

2. The nature of work:

Electric valve drive is commonly used motor, voltage impact resistance. Solenoid valve is closed fast and fast, generally used in small flow rate and pressure, require switching frequency bigger place of electric valve and vice. Electric valve can control the openings of the state is open, closed, half-open half closed, can control the medium inside the pipeline flow and solenoid valve can not reach the requirements. Pneumatic valve: driven by means of compressed air valve.

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