浙江專業(yè)真空管道蝶閥材料頂耕國際貿(mào)易供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 電動閥門和氣動閥門相比，前者結(jié)構(gòu)簡單，運行可靠，對遠距離操作點其動力源（電源或氣源）容易解決。缺點是價格較高，且防爆要求也較高。在選用時，應(yīng)綜合考慮動力源的可獲得性、價格和控制要求等因素。電動閥門選型：當選用電動閥門電動執(zhí)行器的"><meta name="keywords" content="浙江專業(yè)真空管道蝶閥材料"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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id="r3wvho3" class="proBig"><div id="c3wofco" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749325380860/6768130.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="od8tf8v" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749325380860/6768130.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ncjvc8j" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>浙江專業(yè)真空管道蝶閥材料</p><p><span>***更新：</span>2020-06-22 12:29:09</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="bnegnp2" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來</p><p><span>郵箱: </span></p><p><span>電話: </span>18521036598</p><p><span>傳真: </span>021_61637356</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>021-61637356</p><p><span>地址: </span>大葉公路5225號1幢2370室</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="jnk33rv" class="page-proshow02"><p class="title">詳細說明</p><div id="xr3nub8" class="box"><p><p> 電動閥門和氣動閥門相比，前者結(jié)構(gòu)簡單，運行可靠，對遠距離操作點其動力源（電源或氣源）容易解決。缺點是價格較高，且防爆要求也較高。在選用時，應(yīng)綜合考慮動力源的可獲得性、價格和控制要求等因素。電動閥門選型：當選用電動閥門電動執(zhí)行器的控制模式一般分為開關(guān)型和調(diào)節(jié)型）時，除了基本的閥體口徑、壓力、材質(zhì)等要求外，還應(yīng)提供下列參數(shù)： 1.電源參數(shù)（包括電壓、相數(shù)和頻率）； 2.運行時間和電動執(zhí)行器的形式； 3.是否要求防爆，浙江專業(yè)真空管道蝶閥材料，防爆等級； 4.大氣防護等級； 5.過載保護要求，浙江專業(yè)真空管道蝶閥材料，例如過行程保護、過扭矩保護等； 6，浙江專業(yè)真空管道蝶閥材料.就地操作要求，如是否帶就地操作手輪； 7.操作指示要求。氣動閥門選型：當選用氣動閥門氣動執(zhí)行器的運作原理可分為單作用和雙作用）時，除了確定閥體口徑、壓力、材質(zhì)等具體參數(shù)外，還應(yīng)在提供下列參數(shù)： 1.氣源參數(shù)（包括氣源壓力范圍、是否帶自備儲氣罐等） 2.運行時間和氣動執(zhí)行器的形式 3.是否要求防爆，防爆等級； 4.大氣防護等級； 5.過載保護要求，例如過行程保護、過扭矩保護等； 6.就地操作要求，如是否帶就地操作手輪； </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江專業(yè)真空管道蝶閥材料" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749325380860/6768130.png"></div><p> 安裝要求 </p> <p> 1、安裝位置、高度、進出口方向必須符合設(shè)計要求，連接應(yīng)牢固緊密。 </p> <p> 2、安裝在保溫管道上的各類手動閥門，手柄均不得向下。 </p> <p> 3、閥門安裝前必須進行外觀檢查，閥門的銘牌應(yīng)符合現(xiàn)行國家標準《通用閥門標志》GB 12220的規(guī)定。對于工作壓力大于1.0 MPa 及在主干管上起到切斷作用的閥門，安裝前應(yīng)進行強度和嚴密性能試驗，合格后方準使用。強度試驗時，試驗壓力為公稱壓力的1.5倍，持續(xù)時間不少于5min，閥門殼體、填料應(yīng)無滲漏為合格。嚴密性試驗時，試驗壓力為公稱壓力的1.1倍；試驗壓力在試驗持續(xù)的時間應(yīng)符合GB 50243標準要求，以閘板密封面無滲漏為合格。 </p> <p> 大口徑閘閥適用于 Class150 ～ 2500 、工作溫度 -29～425℃（碳鋼）或 -29～500℃（不銹鋼）的小口徑管路上，用于截斷或接通管路中的介質(zhì)，選用不同的材質(zhì)，可分別適用于水、蒸汽、油品、硝酸、醋酸、氧化性介質(zhì)、尿素等多種介質(zhì)。在石油管道上應(yīng)用較多。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江專業(yè)真空管道蝶閥材料" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129736101689453/4021167.png"></div><p> 主要分類 </p> <p> 按驅(qū)動方式分 </p> <p> (1)電動蝶閥 </p> <p> (2)氣動蝶閥 </p> <p> (3)液動蝶閥 </p> <p> (4)手動蝶閥 </p> <p> 按結(jié)構(gòu)形式分： </p> <p> (1)中心密封蝶閥 </p> <p> (2)單偏心密封蝶閥 </p> <p> (3)雙偏心密封蝶閥 </p> <p> (4)三偏心密封蝶閥 </p> <p> 密封面材質(zhì)分： </p> <p> (1)軟密封蝶閥。 </p> <p> 1)密封副由非金屬軟質(zhì)材料對非金屬軟質(zhì)材料構(gòu)成。 </p> <p> 2)密封副由金屬硬質(zhì)材料對非金屬軟質(zhì)材料構(gòu)成。 </p> <p> (2)金屬硬密封蝶閥。密封副由金屬硬質(zhì)材料對金屬硬質(zhì)材料構(gòu)成。 </p> <p> 按工作壓力分： </p> <p> (1)真空蝶閥。工作壓力低于標堆大氣壓的蝶閥。 </p> <p> (2)低壓蝶閥。公稱壓力PN<1．6MPa的蝶閥。 </p> <p> (3)中壓蝶閥。公稱壓力PN為2．5--6．4MPa的蝶閥。 </p> <p> (4)高壓蝶閥。公稱壓力PN為10.0--80．0MPa的蝶閥。 </p> <p> (5)超高壓蝶閥。公稱壓力PN>100MPa的蝶閥。 </p> <p> 按連接方式分： </p> <p> 1、對夾式蝶閥 </p> <p> 對夾式蝶閥的蝶板安裝于管道的直徑方向。閥門則呈全開狀態(tài)。 </p> <p> 對夾式蝶閥結(jié)構(gòu)簡單、體積小、重量輕。蝶閥有彈性密封和金屬密封兩種密封型式。彈性密封閥門，密封圈可以鑲嵌在閥體上或附在蝶板周邊。 </p> <p> 2、法蘭式蝶閥 </p> <p> 法蘭式蝶閥為垂直板式結(jié)構(gòu)，閥桿為整體式金屬硬密封閥門的密封圈 </p> <p> 為柔性石墨板與不銹鋼板復(fù)合式結(jié)構(gòu)，安裝在閥體上，蝶板密封面堆焊不銹鋼。軟密封閥門的密封圈為丁腈橡膠材質(zhì)，是安裝在蝶板上的。 </p> <p> 3、凸耳式蝶閥 </p> <p> 4、焊接式蝶閥 </p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/349735.html</p></div></div></div></div></div><div id="g2g89j2" class="page-right twoColRt"><div id="iro2l7b" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="f7pmdvh" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="88u847d" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個科目真誠推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)" class="vcenter" 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