Valve Standard Terminology
阀门规范术语
Actuator 调节器
An actuator is a mechanical device used to open or close a valve or control valve. It is usually a motor-driven device (electric, hydraulic or pneumatic) that can be adjusted to operate the valve in a predetermined manner.
调节器是一种用于打开或关闭阀门或控制阀的机械装置。通常是一种驱动装置（电动、液压或气动），可以调节以在预定方式下操作阀门。
Ball Valve 球阀
A special type of valve used to regulate the flow of fluid, typically natural gas and oil, in a pipe. It has a ball at the center of the valve which has a circular port and a gasket ring to restrict the flow of fluid through it. When the ball is rotated, it can slightly open the valve to allow a certain amount of flow, or close the valve to prevent any further flow.
一种特殊的阀门，用于调节管道中流体的流动，通常是天然气和石油。它在阀门中央有一个球形部件，上面有一个圆形孔口和垫圈环，以限制流体的流动。当球旋转时，可以稍稍打开阀门，允许一定量的流量，或者关闭阀门，以防止进一步的流量。
Bellows 膜片
A bellows is a flexible material sealed at the edges that connects two parts and permits movement of one of the parts. Bellows are commonly used in valves to provide a seal to prevent leakage. Metal bellows are used in many valve applications, while PTFE and rubber bellows are often used in applications requiring flexibility or corrosive resistance.
膜片是一种柔韧的材料，在边缘密封连接两个部件，允许其中一个部件的移动。膜片通常用于阀门，以提供一种密封以防止渗漏。金属膜片在许多阀门应用中使用，而PTFE和橡胶膜片通常用于需要柔韧性或耐腐蚀性的应用中。
Bonnet 盖板
The bonnet is the top part of a valve that encloses the operating parts and controls their movement. It is a body installed on the stem of a valve that typically consists of a packing gland, stem nut and flange. The bonnet also provides a casing for the trim of a valve, such as the stem and spool, and also contains the stem bearing.
盖板是阀门的顶部，包围着工作部件并控制它们的移动。它是安装在阀门轴上的一个机身，通常由垫圈盖、轴螺母和法兰组成。盖板还为阀门的整体提供一个外壳，如轴和芯套，并且还包含轴承。
Butt-weld 轧缝
Butt-welding is a process of joining two pieces of metal by forming a butt seam. This is done by placing the two pieces at an angle and then welding them together. The butt-weld is a strong joint that is often used in the construction of fluid transfer and control systems, such as valves.
轧缝是一种将两块金属材料拼接成轧缝的过程。这是通过将两个片子放在一个角度，然后将它们熔接在一起来完成的。轧缝是一种很强的接头，通常用于流体输送和控制系统，如阀门的构建。
Check Valve 止回阀
Check valves are devices used to control the flow of liquids or gases in a pipe. Check valves allow the flow in one direction only, providing a check on the flow. The check valve has a movable disc that opens and closes in response to the flow of the fluid. When the flow stops, the check valve automatically closes and prevents the reverse flow of the fluid.
止回阀是用于控制管道中液体或气体的流动的装置。止回阀只允许流动的方向，以检查流动。止回阀具有一个可动盘，可以根据流体的流动而开启和关闭。当流体停止时，止回阀就自动关闭，防止流体反流。
Diaphragm 隔膜
A diaphragm is a thin, flexible membrane that separates two chambers. It is commonly used in valves to create a seal between the valve stem and the valve body, preventing leakage. Diaphragms come in a variety of materials, such as woven cloth, rubber, PTFE and metal, and can be of different shapes and sizes.
隔膜是一种薄而柔韧的膜片，用于隔开两个室。它通常用于阀门，以在阀芯和阀体之间创建密封，从而防止渗漏。隔膜有多种材料，如织物布、橡胶、PTFE和金属，并且可以有不同的形状和大小。
Flow Control Regulator 流量调节器
A flow control regulator is a device used to regulate the flow of fluid in a pipe. The device senses the flow rate and adjusts the flow rate to maintain a steady pressure and flow rate. The device typically has a valve actuator to control the opening and closing of the valve, and a pressure regulator to adjust the pressure.
流量调节器是用于调节
