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class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="azwjm5b" class="twoCol"><div id="8dd338q" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產品供應</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_famenti/">閥門</a>?<a href="http://www.cdcfah.com/cp/third-famenti_diefakna/">蝶閥</a>?上海德國真空管道蝶閥廠家供應頂耕國際貿易供應</p><div id="02bmynj" class="leftbox clearfix"><h1>上海德國真空管道蝶閥廠家供應頂耕國際貿易供應</h1><div id="uiacoiz" class="proBig"><div id="jdaxzqx" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337304688/5807955.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="dh3qsub" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337304688/5807955.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="feg3eyf" class="content"><p><span>需求數量：</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>產品關鍵詞：</span>上海德國真空管道蝶閥廠家供應</p><p><span>***更新：</span>2020-05-26 13:30:22</p><p><span id="click" >瀏覽次數：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="i7xu3vs" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿易（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="nhj2fc2" class="page-proshow02"><p class="title">詳細說明</p><div id="xlx338x" class="box"><p><p> 主要分類 </p> <p> 按驅動方式分 </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> 按結構形式分： </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> 密封面材質分： </p> <p> (1)軟密封蝶閥。 </p> <p> 1)密封副由非金屬軟質材料對非金屬軟質材料構成。 </p> <p> 2)密封副由金屬硬質材料對非金屬軟質材料構成。 </p> <p> (2)金屬硬密封蝶閥，上海德國真空管道蝶閥廠家供應。密封副由金屬硬質材料對金屬硬質材料構成。 </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> 對夾式蝶閥結構簡單、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構，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合式結構，上海德國真空管道蝶閥廠家供應，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，是安裝在蝶板上的，上海德國真空管道蝶閥廠家供應。 </p> <p> 3、凸耳式蝶閥 </p> <p> 4、焊接式蝶閥 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海德國真空管道蝶閥廠家供應" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337304688/5807955.png"></div><p> 任何的密封有時允許有微量的泄漏，如果此泄漏量不起實際作用時，則可認為是密封的。閥門制造的技術標準通常規(guī)定，金屬對金屬密封，在關閉狀態(tài)下進行密封性能試驗時，允許有一定的泄漏量。為了保證閥門高的密封性能，必須特別認真地研磨密封面，增加密封面上的比壓，但要小于密封面材料的許用比壓，同時要提高結構的剛度。通過閥門的使用經驗表明，在許多情況下，對閥門的密封性能提出過高的要求是不必要的，因為有些工況完全允許介質有微量泄漏，因這種泄漏量不足以影響閥門的使用。相反，提高這些閥門的密封性能會使制造工藝復雜化，提高成本，造成不必要的浪費。閥門本身的結構設計及制造加工對其外泄漏影響**為明顯，低泄漏閥門對于閥門的閥體、閥桿和填料函等關鍵部件的設計制造加工要求更為嚴格 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海德國真空管道蝶閥廠家供應" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896250000/4170655.jpg"></div><p> 制造精度上進行把關。比如，閥瓣與閥座密封面很吻合，能提高密封性。環(huán)向波紋度多的特點，是其迷宮密封性能好。閥門泄露在生活、生產中十分普遍，輕則會造成浪費，或給生活帶來危險，如自來水閥門泄露，重則導致嚴重后果的發(fā)生，如化工行業(yè)的0、有害、易燃、易爆及腐蝕性介性質的泄漏等，嚴重的威脅人身安全、財產安全和環(huán)境污染的***。一臺依靠外力旋轉傳動開及關閉的閥門都設計有一個密封裝置既用在填料涵中裝上一定數量的填料密封圈，以至達到密封效果，但密封情況有如何呢？閥門的填料處泄漏是閥門中**容易出現泄漏故障的部位其一，但究其原因大致有二個方面的原因。三、閥門密封形式密封件在閥門中也是十分關鍵的部件。閥門的密封性能是指閥門各密封部位阻止介質泄漏的能力，它是閥門**重要的技術性能指標。閥門的密封部位有三處：啟閉件與閥座兩密封面間的接觸處;填料與閥桿和填料函的配合處;閥體與閥蓋的連接處。其中前一處的泄漏叫做內漏，也就是通常所說的關不嚴，它將影響閥門截斷介質的能力。對于截斷閥類來說，內漏是不允許的。后兩處的泄漏叫做外漏，即介質從閥內泄漏到閥外。外漏會造成物料損失，污染環(huán)境，嚴重時還會造成***。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海德國真空管道蝶閥廠家供應" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737718496094/8657721.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/48562.html</p></div></div></div></div></div><div id="3zvh3nk" class="page-right twoColRt"><div id="qphjv22" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="s2cebdx" 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