The device by the human operator launches, such as through the cone-shaped gear reducer drive, direct drive valve stem up and down movement of the valve gate.
本装置由人力操作手轮，通过锥形齿轮等减速传动，直接驱动阀门阀杆上下移动，启闭阀门。
Gate valve are normally installed in horizontal pipe runs with the stem vertical.
闸阀通常安装在水平管道上，阀杆垂直向上。
CCD electric ultra-high vacuum gate valve USES electric device to drive the stem, moving valve disc up down to make the valve opened closed.
CC D型电动超高真空插板阀是通过电动装置驱动阀杆带动阀板作上下运动，达到阀门的开启或关闭。
CCD electric ultra-high vacuum gate valve USES electric device to drive the stem, moving valve disc updown to make the valve opened or closed.
CCD电动超高真空插板阀是通过电动装置驱动阀杆带动阀板作上下运动，达到阀门的开启或关闭。
Introducing the properties of slab gate valve, analyzing the characteristics of the stem sealing, proposing the methods of improving packing structure.
介绍了平板闸阀的性能，分析了其阀杆密封的特点，提出了改进填料结构的方法。
CCD electric ultra-high vacuum gate valve USES electric device to drive the stem, moving valve disc up and down to make the valve opened or closed.
真空插板阀是通过电动装置驱动阀杆带动阀板作上下运动，达到阀门的开启或关闭。
CCD electric ultra-high vacuum gate valve USES electric device to drive the stem, moving valve disc up and down to make the valve opened or closed.
CC D型电动超高真空插板阀是通过电动装置驱动阀杆带动阀板作上下运动，达到阀门的开启或关闭。
Ball is a sphere with a circular channel for gate parts, ball rotation with the stem of the valve action to achieve headstock.
球阀原理，球阀是用带有圆形通道的球体作启闭件，球体随阀杆转动实现启闭动作的阀门。
The invention relates to a knife-shaped gate valve, in particular to a rising stem knife-shaped gate valve.
本发明涉及一种刀型闸阀，尤其涉及一种明杆刀型闸阀。
Position by the valve stem threads are divided into clear and dark bar bar gate valve two...
按阀杆的螺纹位置划分，可分为明杆闸阀和暗杆闸阀两种。
Position by the valve stem threads are divided into clear and dark bar bar gate valve two...
按阀杆的螺纹位置划分，可分为明杆闸阀和暗杆闸阀两种。
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