手动阀门

多旋转操作使得手动阀门能够进行精确节流。

Multi-turn operation allows for precise throttling of manual valves .

检查阀（单向阀）是一个手动阀门，这样水只能往一个方向走。

A check valve is a mechanical valve that only permits water flow in one direction .

配置这种备选件的阀门在执行器顶部安装一个手轮用于手动阀门操作。

Valves with this option have a hand wheel mounted on top of the actuator for manual valve operation .

耐德公司阀门的连锁装置消除了操作过程中的人为错误，包括手动阀门的操作失误。

Netherlocks valve interlocks eliminate the potential for human error in processes which involve the operation of manual valves .

建议每台罐在手动阀门处有就地读数，以便操作员在排凝时知道罐的液位。

Suggest having local readout at manual valve for each drum so that operator can level in drum when draining .

执行机构经常用于实现紧靠手动阀门无法实现的工艺过程的自动化，准确定时，以及远程操作。

Actuation is often desired for process automation , precision timing , and remote operation not possible with manual valves alone .

通常这种信号由内置于开关盒中的接近传感器，或直接安装在驱动器或手动阀门上的双传感器来获取。

This feedback is generally obtained by use of inductive sensors which are built into a switchbox , or double sensors which are mounted directly on actuators or the manual valve .

所以只能采取人工操作通过且观察仪表，手动操作阀门来控制反应。

Only used manual operation to adjust valve as to manipulate reactor by watching instrument panel .

手操机构：自动控制在不正常情况下可以手动操作阀门的启闭。

HART institutions : automatic control under normal circumstances you can not manually open and close the valve .

在电源供应中断时，也可以通过手动来操作阀门启闭，从而紧急控制了介质的流向，也避免了事故的发生。

When power cut off , you can also manually operate the valve opening and closing to control media flowing , also to avoid accidents .

在小型水泥粉磨站中，风机通常采用人工手动进行控制，即手动调节风机阀门开度来调节球磨机的需风量，此种控制方式造成了电能被大量的损耗。

The fan was usually controlled by hand in the small cement grinding station ; the required air of the bill was regulated by adjusting the fan opening value , which wasted a mount of electric energy .

对大型空调系统而言，采用手动调节阀调节过程复杂，手动调节前端阀门，后端流量会受影响。

Of large air-conditioning system , using the manual control valve regulating the complex process of manually adjusting the front-end valves , back-flow will be affected .