欧美成人黑人xx视频免费观看_毛片久久久久久_久久99视频这里只有精品_一区二区国产精品视频_九九九热精品_福利小视频在线

Hello, welcome to the Jiangsu Ideal Valve Co., Ltd. official website!
TEL:+86-515-87214888      EMAIL:fnjslxfy@163.com      

Installation instructions and procedures of the butterfly valve

Time:2018-07-14
he wafer butterfly valve is one of the most common type of valve in industrial piping, structure of the wafer butterfly valve itself is small, only need to put the...

The wafer butterfly valve is one of the most common type of valve in industrial piping, structure of the wafer butterfly valve itself is small, only need to put the butterfly valve in the pipeline both ends flanges, with stud through pipe flange and wafer butterfly lock, can control the fluid of pipeline. Wafer butterfly especially suitable for short distance between the space narrow or pipe, butterfly valve in the fully open position, the butterfly plate thickness is the only resistance when the medium flows through the body, so by the valve pressure drop is small, it has good flow control characteristics.


I. instructions before installation of clamping butterfly valve:

1. Before installation and operation, use air spraying to remove the external objects on the distribution pipe, and clean the inner surface of the distribution pipe with water.

2. Carefully check whether the use of valve conforms to the performance specifications; (temperature, pressure)

3. Check whether there is any sundries in the valve channel and sealing surface, and timely remove them;

4. The valve shall be installed in time after opening the box. Please do not loosen any fastening screws or nuts on the valve at will.

5. Special butterfly valve flange must be used for the butterfly valve.

6. The electric butterfly valve can be installed on any Angle pipe. For the convenience of maintenance, it is recommended not to install the valve upside down.

7. When installing butterfly valve flange plate, it must ensure the flange face and sealing rubber pair, screw evenly tightened, sealing cover must be fully attached; If the screw is not tightened evenly, the rubber bulge will cause the stuck butterfly plate, or the valve stem will leak due to the resistance of the butterfly plate.


Ii. Installation steps of clamping butterfly valve:

The correct installation of the butterfly valve is related to the sealing degree of the butterfly valve and whether it will leak out, including the safety in operating conditions. Users should understand the installation process.

1. As shown, place the valve between the two pre-installed flanges, paying attention to the neat alignment of bolt holes.

2. Insert four pairs of bolt nuts into the flange hole gently and tighten the nut slightly to correct the flatness of the flange face;

3. Fix the flange on the pipe by spot welding;

4. Remove the valve;

5. Fully welded and fixed the flange to the pipe;

6. Install the valve after the welding port cools. Ensure that the valve has enough movable space in the flange to prevent damage to the valve, and ensure that the valve plate has a certain opening;

7. Correct valve position and tighten four pairs of bolts (be careful not to tighten them too tightly)

8. Open the valve so that the valve plate can be opened and closed freely, and then slightly open the valve plate;

9. Tighten all nuts with cross equalization;

10. Confirm that the valve can be opened and closed freely again.


The wafer butterfly valve installed first before installation to must be flat, in casual knock against, when installation will be made after the length of the installation, pull it in the design of piping, without special permission is not free to remove the wafer butterfly valve, this is what we want to know before installation. At the same time we also know that the wafer butterfly valve can be installed in any position, but the wafer butterfly valve requires laid along the butterfly valve after the installation is complete, a bracket for the wafer butterfly valve, and after stents once made, when use is strictly prohibited to stand off.

主站蜘蛛池模板: 精品国产一区二区三区在线_国产第一精品_日韩手机视频_亚洲一本视频_免费国产一级淫片_日本网站视频_欧美精品成人_国产亚洲精品久久午夜玫瑰园 | 久久精品2_性色一区二区三区_久草热这里有精品6_天天爽夜夜爽夜夜爽_91麻豆国产福利精品_99精品视频精品精品视频_一级大片免费_久久99精品国产麻豆不卡 | 日本韩国一区二区_日韩亚洲欧美久久久www综合_亚洲日本中文字幕一区二区三区_精品2区_色爱综合av_亚洲国产婷婷综合在线精品_国产亚洲精品久久久久久久久久_欧美日韩精品免费 | 亚洲午夜视频_久久78_麻豆国产原创视频在线播放_成人在线视频免费播放_远方的山楂树免费观看视频48集_亚洲另类春色国产精品_国产影院一区二区三区_无套内射AV五十区 | jizzjizz欧美69巨大_久久青色_日韩一区二区三区精品视频第3页_久久九七_国产精品久久毛片A片_日韩精品中文字幕在线_97久久精品久久免费观看_天堂在线资源中文在线观看 | 亚洲男人综合久久综合天堂_99爱视频在线_成人av午夜_中文字字幕码一二三区_国产综合不卡_国产综合13P_一区二区色_少妇三级全黄 | 国产成人无码av一区二区在线观看_91久久爽久久爽爽久久片_天天天天天干_97超超碰_精品无码久久久久国产_欧美不卡中文字幕一区二区_国产伦精品一区二区三区妓女_日本高清免费视频 | 吃逼视频网站_亚洲丝袜视频_日本xxxxxxxxx_另类专区欧美制服_欧洲亚洲色一区二区色99_日本三级高清视频_美女夜夜爽_久久大综合 | 佐山爱一区二区中文字幕_黄色大全在线观看_国产日韩综合_国产精品久久久久不卡_一区二区三区国产欧美日韩_亚洲乱码中文字幕综合区_久久一日本道色综合久久_日本高清精品 | 精品99久久_日本人妻人人人澡人人爽_黄色片免费看_黄绝一级毛片_国产精品性色一区二区三区_天天做爰天天爽_性暴力欧美猛交在线播放_久久精品国产亚洲77788 | 成人一在线视频日韩国产_超碰在线公开97_久久亚洲精品国产一区_国产精品久久不能_午夜亚洲精品专区高潮日w_kaori肉感在线播放_www.四虎影视.com_欧美日韩久 | 久久久国产视频91_亚洲国产AV美女网站_蜜臀av在线一区二区三区_超碰伊人久久_国产高清狼人香蕉在线_国产成人亚洲在线观看_亚洲欧美一级久久精品国产特黄_91pro国产福利网站www | 久久久社区_硬汉视频在线观看_亚洲视频精品一区_jjzz4日本_黄色视免费_嘿咻嘿咻免费无码专区在线看_成人国产精品一区二区网站_人妻老妇乱子伦精品无码专区 | 99在线免费观看_亚洲一区二区无码偷拍_很很鲁很很很鲁在线视频播放_免费成人网在线观看_91av视频网站_厨房挺进紧致班主任少妇_特警新人类国语免费高清在线观看_日韩中文在线 | 丰满人妻久久中文字幕免费_亚洲男女羞羞无遮挡久久丫_韩国三级毛片_美女啪啪网站又黄又免费_丰满人妻一区二区三区av猛交_中文字幕在线网站_亚洲.欧美.在线视频_欧产日产国产精品 | 99久久久无码国产精品9_亚洲v.com_亚洲中文字幕无码一区日日添_欧美成年人在线观看_精品视频网_国产91在线精品_国产精品s色_亚洲欧美中文字幕在线观看 | 日日操天天_二区视频在线观看_一级欧美一级日韩_成人综合网在线_日本黄色片在线观看_www.17c.com小草影视_青青草手机在线观看视频_日韩新片王网 | av色中色_91丨porny丨中文_亚洲人成网站色7799_在线观看第一页_2019天天操_天天综合视频_校花被肉干高h潮不_一级@片 | 德国妓女精品性HD_狼人精品一区二区三区在线_性猛交xxxx乱大交中国_国产一级片中文字幕_四虎永久在线精品免费播放_日日婷婷夜日日天干A片_91成熟丰满女人少妇777_好好热av | 成人做爰高潮片免费视频韩国_欧美一级黄色免费_日韩欧美一级片_超碰国产91_亚洲av无码专区亚洲av不卡_亚洲爱爱小视频_久久综合九色综合欧美就去吻_在线观看免费人成视频色9 | 德国妓女精品性HD_狼人精品一区二区三区在线_性猛交xxxx乱大交中国_国产一级片中文字幕_四虎永久在线精品免费播放_日日婷婷夜日日天干A片_91成熟丰满女人少妇777_好好热av | 日韩av视屏_久久麻花精品一二三区_99福利影院_国产激情精品久久久第一区二区_奇米在线_女女女女擦bbb毛片_日本天堂在线播放_www日韩 | 免费成年人_亚洲熟妇中文字幕五十中出_精品一区二区三区免费在线观看_四虎永久影院_国产普通话尤物吞精视频_精精国产xxxx视频在线动漫_亚洲综人网_国产一区二区欧美 | 91精品国产综合久久久久影院不卡_国产精品成人一区二区_中文字幕AV一区乱码_九色tm视频_极品白浆_呻吟求饶的人妻中文字幕_中文字幕丰满伦孑_国产精品手机免费 | 欧美人与性动交G欧美精器_日本高清久久_国产精品片www48888_欧美精品色婷婷五月综合_亚洲国产精品久久久久爰色欲_手机黄色在线观看_欧美自拍网站_国产乱码精品一区二三 | 国产日韩一区二区_人妻无码久久一区二区三区免费_日本道精品一区二区三区_老司机avhd101_女女综合网_久草在线久草在线2_爱草免费视频_日韩一及片 | 亚洲精品A片久久久久_三级网站午夜三级_男女性爽大片在线观看_日本高清视频一区二区三区_亚洲精品色综合av网站_www.av日韩_免费视频啪视频在线观看老司机a_午夜性做爰免费看 | 国产精品日韩一区二区三区_vps私人毛片_欧美younv交_免费观看韩国理论片_国产精品一二三区视频出来一_粉嫩饱饱鱼一线天在线观看_国模少妇一区二区三区咪咕_日日做夜狠狠爱欧美黑人 | 又黄又无遮挡AAAAA毛片_人妻AV综合天堂一区_日韩久久久精品首页一本在线免费视频_成人年无码AV片在线观看_免费看片日韩_欧美日本一区二区_一区二区三区日本久久久_欧美极品videos粗暴 | 日韩一区精品_疯狂做受XXXX高潮视频免费_亚洲美女黄色_99精品产国品一二三产区_亚洲xxxxxxxxx_rct在线_欧美黑人精品一区二区不卡_久久久久国产精品 | 麻豆一区二区三区精品视频_老熟女乱之仑视频_日本少妇久久久_朋友的妈妈5在线观看_a级黄色毛片免费观看_久久精品中文无码资源站_午夜黄大色黄大片美女_成人国产一区二区精品小说 | 麻豆一区二区三区精品视频_老熟女乱之仑视频_日本少妇久久久_朋友的妈妈5在线观看_a级黄色毛片免费观看_久久精品中文无码资源站_午夜黄大色黄大片美女_成人国产一区二区精品小说 | 佐野ゆいな在线播放_人人看97_成年人在线播放_国产一区二区三区不卡av_精品人妻无码一区二区三区在线_2022精品久久久久久中文字幕_国产亚洲一卡2卡3卡4卡老狼_毛片24种姿势无遮无拦 | 四虎在线免费观看_精品久久久亚洲_亚洲国产精品久久久久婷蜜芽_麻豆网在线观看_中国一级黄色毛片_久久综合久久鬼色_中文字幕在线_国产精品久久久久一区二区三区 | 91福利网址_成人在线观看影院_欧产日产国产精品v_成人做爰高潮片免费视频_真实国产乱子伦对白视频不卡_国产色综合久久无码有码_黄色av毛片_亚洲精品aⅴ | 国产AV仑乱内谢_国产精品一区二区三区在线免费观看_久久精品天天中文字幕人妻_成人毛片18女人_四虎影院最新网址_欧美成人精品一区二区综合_国语免费一级毛片私人_亚洲国产成人精品女人久久 | 亚瑟av亚洲精品一区二区_亚洲第三色_在线观看无码不卡AV_内射人妻无套中出无码_欧美激情五月_色婷婷久_免费欧美在线_jizz久久精品永久免费 | 日本一本二本三区免费免费高清_18禁免费无码无遮挡不卡网站_亚洲日韩欧美国产高清αv_挺进朋友人妻的身体里_国产高清av_国产一二在线_国产福利第一视频_国产麻豆91精品三级站 | 青青青国产精品一区二区_97人人爽人人喊人人模波多_三级免费网址_黄色片aaaa_四虎av成人_欧美大片一区_日韩精品无码区免费专区_91污免费 | 国产永久地址_男人久久_国产淫语对白粗口video_在线观看中文字幕网站_日韩在线成人av_GAY片男同网站WWW免费_久久无码免费的A毛片大全_国产福利一二 | 欧美一级大片免费看_在线日韩小视频_精品无码久久久久久尤物_一道本AV免费不卡播放_91麻豆产精品久久久久久_毛片91_99久久99久久久精品齐齐_无码人妻丰满熟妇奶水区码 久久亚洲免费视频_韩国一级黄色录像_国产极品美女到高潮_妺妺窝人体色WWW视频_日韩精品真人荷官无码_日韩AV无码一网二网三网_91亚洲精品久久久久图片蜜桃_segui88久久综合9999 |