欧美乱码伦视频免费_色琪琪www618seon_日本免费a∨片免费_久久久夜色精品亚洲a_午夜性大片_亚洲综合精品伊人久久

Pneumatic gate valve

Column:Technical article Time:2023-10-06
Product model: Z641H
Nominal diameter: DN50~800mm
Nominal pressure: PN1.6~6.4MPa


[Standard parameter]

Design standardAPI 600、API6D、ASME B16.34、GB/T 12234
Structural lengthASME B16.10、API6D、GB/T 12221
Connection standardASME B16.5、ASME B16.47、GB/T 9113、JB/T 79、HG/T 20592
Pressure testAPI 598、GB/T 13927、JB/T 9092
Pressure temperature ratingASME B16.34 、GB/T 12224


[Valve features]

1, the gate has two sealing surfaces, the sealing surface to form a wedge, wedge angle varies with valve parameters, usually 5 degrees.
2, wedge gate valve sealing principle is combined by two on the two upper wedge sealing surface and sealing surface of the valve body wedging, thereby sealing performance.3, wedge gate valve according to the stem drive gate opening and closing different ways, can be divided into bright rod gate valve (lift rod gate valve) and dark rod gate valve (rotary rod gate valve).
4, wedge gate valve in accordance with the different forms of the gate structure, can be divided into elastic gate valve and rigid gate valve.
5, the valve body for casting molding, valve body and valve cover with bolt connection, the middle flange using spiral gasket seal, the customer has special requirements can also be used metal ring connection.
6, the channel is smooth, the flow coefficient is small. The sealing surface is eroded and eroded by medium.
7, The sealing surface is made of alloy steel or hard alloy. It has good abrasion resistance and scratch resistance.
8, flexible graphite packing, reliable sealing, easy and flexible operation.
9, medium flow unrestricted, no disturb, do not reduce pressure.
10, The shape is simple, the structure length is short, the manufacturing technology is good, and the scope of application is wide.

[Valve structure drawing]

[Adaptive condition]
       The valve has the advantages of light switch, reliable sealing, good elasticity memory and long service life. The utility model can be widely used as an adjusting and intercepting device for pipelines such as water supply, sewage, building, petroleum, chemical industry, food, medicine, light industry, electric power, ship, metallurgy, energy system, etc..


主站蜘蛛池模板: 无码中文字幕VA精品影院 | 国产亚洲精品久久久麻豆男与男 | 91热播| 日本熟妇无码色视频在线观看 | 精品国产AV一区二区三区 | 亚洲欧洲日产国码综合在线 | 男ji大巴进入女人身体 | 蜜桃视频在线免费播放 | 精东天美麻豆果冻传媒mv | 亚洲av成人无码天堂 | 无码射肉在线播放视频 | 一边下奶一边吃面膜视频讲解 | 欧美黑人粗暴多交高潮水最多 | 97色精品视频在线观看 | 免费播放一区二区三区 | 亚洲av乱码一区二区三区 | 国外AV无码精品国产精品 | 一区二区三区不人妻无码 | 好看的喂奶三级 | 中文字幕乱人伦高清视频 | 337P亚洲日本中国大胆69 | 亚洲aa视频| 亚洲成a人片777777 | 亚洲乱码无人区卡1卡2卡3 | 无码中文字幕av免费放 | 国产亚洲2021成人乱码 | 东北成人网站 | 收集最新中文国产中文字幕 | 狼友AV永久网站免费极品在线 | 亚洲av永久无码精品尤物 | 日韩精品一卡2卡3卡4卡新区 | 成人国产亚洲欧美成人综合网 | 日本一区二区在线播放 | 中文字幕中文字幕中文字幕亚洲无线 | 亚洲中文字幕无码日韩精品 | 老太婆性杂交毛片 | 国产福利美女福利视频免费看 | 毛片免费全部无码播放 | 色婷婷日韩 | 国产免费天天看高清影视在线 | 国产白丝无码视频在线观看 |