热er99久久6国产精品免费-热e国产-热re66久久精品国产99re-热re99久久精品国产99热-热re久久精品国产99热-热九九精品

Stop valve for dark bar ammonia

Dateline:2014-11-30    Hits:loading_

Dark bar valve stainless steel dark bar cut-off valve flange valve stainless steel rod dark dark bar flange cut-off valve

The dark bar of stainless steel bellows globe valve electric valve manufacturing Co. Ltd. Zhejiang dark rod stainless steel bellows globe valve is suitable for the nominal pressure of PN1.6 ~ 16MPa, the working temperature of -29 to 350 DEG C flammable,explosive, toxic, toxic fluid, high temperature heat-conducting oil, liquid medium. Dark bar valve widely used: petroleum chemical industry, chemical fiber textile, paper,plastic, rubber, printing and dyeing power steel natural gas and other gas system,safe and reliable performance, widely used in ethylene glycol and other industrialfluid. Dark bar valve drive a manual, gear, electric, pneumatic etc..

Dark bar valve opening and closing parts is the valve plate, the valve plate and thedirection of motion of the fluid direction is vertical, dark bar valve can be fully open and fully closed, can not be adjusted and the throttle. The valve plate has two sealingsurface, the valve plate valve is the most common mode of sealing surface to form two wedge, wedge angle varies with the valve parameters, usually 50, medium is not high temperature is 2 degrees 52''''. The dark bar valve plate cut-off valve can be made into a whole, called the rigid valve plate; the valve plate can also be made to produce small deformation, in order to improve their craft, make up the sealing surface angle deviations arising during processing, the valve plate is called the flexible valve plate.

Dark bar valve is also called the rotating rod valve (also called dark bar wedge type cut-off valve). Stem nut in disc, hand wheel rotation to drive the valve rod, leaving gate to upgrade, a trapezoidal thread is usually in the stem of the bottom of the bottom end of the thread, through the valve on the valve flap and the guide groove,the rotary motion into linear motion, which is the operating torque thrust into operation. Open the dark bar valve, when the gate valve lift height is equal to 1:1times the diameter, the fluid flow channel completely, but at run time, this position is unable to monitor. Actual use, is the apex of the stem as a symbol, which means that the fixed position, as its full open position. Temperature changes appear to consider locking phenomenon, usually open to the vertex position, and then fell back to 1/2 1circle, as a fully open valve position. Therefore, the valve fully open position of the valve rod dark, according to method of plate position (that is, to determine the trip. ".


手機網(wǎng)站

主站蜘蛛池模板: 日日摸夜夜爽 | 久久免费小视频 | 操综合| 日韩一级黄色片 | 分享一个无毒不卡的网站 | 免费毛片在线视频 | 国产三级网 | 久操免费视频 | 亚洲夜夜骑 | 国产精品福利视频主播真会玩 | 国产丰满麻豆videossexhd 国产丰满眼镜女在线观看 国产夫妻久久线观看 | 欧美 日韩 | 亚洲sss视频 | 国产97色在线 | 免费 | 久久国产精品-国产精品 | 亚洲日本国产乱码va在线观看 | 四虎影永久在线观看精品 | 91日韩视频 | 九色影院 | 国产成人精品三级91在线影院 | 国产极品白嫩美女在线观看看 | 国产亚洲欧美在线观看的 | 性欧美大战久久久久久久久 | 日韩欧美在线中文字幕 | 亚洲国产成a人v在线观看 | 亚洲成人影院在线观看 | 爱爱免费播放视频在线观看 | 免费观看成人久久网免费观看 | 日本粉嫩毛片视频 | 国产成人亚洲精品蜜芽影院 | 久久6这里只有精品 | 久久精品国产99久久72 | 色老板在线观看永久免费视频 | 亚洲国产精品免费观看 | 亚洲狠狠婷婷综合久久久久网站 | 久久草精品 | 久久se精品一区二区国产 | 国产xxxxx | 2022国产福利在线观看 | 草莓视频91 | 色综合社区 |