以国际标准为基础与国内传统计算方法相比较，探析调节阀口径的计算方法。
Based on the international standard and compared with the domestic traditional method, this article discusses the measurement method of the regulating valve caliber.
等百分比调节阀口径一般较小，当需要大口径调节阀时，实际工程中会采用调节型蝶阀来替代。
When a big adjusting valve is required in a project, the adjusting butterfly valve can be fully in place of the equal percentage adjusting valve.
最常见的是由某种阀来完成，但这也可能是一条皮带，或者是马达速度、口径位置等等。
Most often this is in some kind of valve, but it might also be a belt of motor speed, louver position, and so on.
不能小于安全阀的管道口径，也不能在排泄管上安装任何缩径管接头。
Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.
从弹簧刚度、整定压力范围，讨论了针对安全阀同一口径，在整定压力和回座压力比较接近的情况下，弹簧的优化设计。
From spring rigidity and range of set pressure, spring optimize design to same diameter's safety valve at set pressure near blow-down pressure are discussed.
本文就气动薄膜调节阀类型、作用方式、流量特性和口径大小的选择，结合化工生产的特点作了较详细地阐述。
According to characteristics of chemical industry process of production, this paper details the pneumatic diaphragm valve, s choice on type, acting mode, specific property of flow and diameter size.
在我们的生产、生活中，过去常用直通式、小口径截止阀，现在已渐渐被球阀所取代。
In our production, life, it used to straight-through, small-caliber valve, ball valve is now gradually being replaced.
排泄管道必须与安全阀出口具有相同的口径，必须从安全阀的下方接到安全排放地点。
The discharge line must be the same size as the valve outlet, and must pitch downward from the valve to a safe place for disposal.
阀杆材质，力求不锈钢阀杆(2cr13)，大口径阀门也应是不锈钢嵌包的阀杆。
Stem material, and strive to stainless steel stem (2cr13), large diameter valves also should be embedded in the package of stainless steel valve stem.
大口径电磁阀。
有的公司为了增大冲厕时的冲力，投入巨额资金研发大口径的虹吸式电磁阀作下水阀。
Some company for enlarging blunt Ci of momentum, devotion a huge sum of funds development big caliber of the Hong absorb type electromagnetism valve make watering valve.
介绍了大口径船用瓶头阀的结构、性能和设计要点，该阀具有设计新颖，密封可靠的特点。
To introduce the structure, performance and key elements of the design of large diameter Marine cylinder valve. It is original in choice of design and has a reliable sealing feature.
采样管的里端头为与逆止阀的内口径呈上斜面的单面楔形；
The inner end of sampling tube is one-sided slant wedge with the caliber of check valve;
适用于小口径阀门通径：DN15/100法兰式、直通式闸阀，截止阀，球阀等阀门的密封测试和强度测试。
It's suitable for the small caliber valve nominal diameter: airproof test and strength test of DN15/100 flange type, through-type gate valve, cut-off valve and ball valve etc.
适用于小口径阀门通径：DN15/100法兰式、直通式闸阀，截止阀，球阀等阀门的密封测试和强度测试。
It's suitable for the small caliber valve nominal diameter: airproof test and strength test of DN15/100 flange type, through-type gate valve, cut-off valve and ball valve etc.
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