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class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)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>?上海官方真空管道蝶閥重量頂耕國際貿(mào)易供應</p><div id="575d7ht" class="leftbox clearfix"><h1>上海官方真空管道蝶閥重量頂耕國際貿(mào)易供應</h1><div id="lf5h5xd" class="proBig"><div id="tv59jdn" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496982422/7639979.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bld3rtl" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496982422/7639979.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hrld7ld" 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)品關鍵詞：</span>上海官方真空管道蝶閥重量</p><p><span>***更新：</span>2020-05-30 13:16:34</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="nfhn7lx" 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="9nhzjhp" class="page-proshow02"><p class="title">詳細說明</p><div id="pr97npj" class="box"><p><p> 密封面是閥門**關鍵的工作面，密封面質(zhì)量的好壞關系到閥門的使用壽命，通常密封面材料要考慮耐腐蝕，耐擦傷，耐沖蝕，上海官方真空管道蝶閥重量，抗氧化等因素。通常分兩大類：（一）軟質(zhì)材料1、橡膠（包括丁睛橡膠，上海官方真空管道蝶閥重量，氟橡膠等）2、塑料（聚四氟乙烯，尼龍等）（二）硬密封材料1、銅合金（用于低壓閥門）2、鉻不銹鋼（用于普通高中壓閥門）3、司太立合金（用于高溫高壓閥門及強腐蝕閥門）4、鎳基合金（用于腐蝕性介質(zhì)）閥桿材料閥桿在閥門開啟和關閉過程中，承受拉、壓和扭轉作用力，并與介質(zhì)直接接觸，同時和填料之間還有相對的摩擦運動，因此閥桿材料必須保證在規(guī)定溫度下有足夠的強度和沖擊韌性，有一定的耐腐蝕性和抗擦傷性，以及良好的工藝性。常用的閥桿材料有以下幾種。一、碳素鋼用于低壓和介質(zhì)溫度不超過300℃的水、蒸汽介質(zhì)時，一般選用A5普通碳素鋼。用于中壓和介質(zhì)溫度不超過450℃的水、蒸汽介質(zhì)時，一般選用35質(zhì)量碳素鋼。二、合金鋼用于中壓和高壓，介質(zhì)溫度不超過450℃的水、蒸汽、石油等介質(zhì)時，一般選用40Cr（鉻鋼）。用于高壓、介質(zhì)溫度不超過540℃的水、蒸汽等介質(zhì)時，可選用38CrMoALA滲氮鋼。用于高壓，上海官方真空管道蝶閥重量、介質(zhì)溫度不超過570℃的蒸汽介質(zhì)時，一般選用25Cr2MoVA鉻鉬釩鋼。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海官方真空管道蝶閥重量" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496982422/7639979.png"></div><p> 1、蝶閥具有結構簡單、體積小、重量輕、材料耗用省，安裝尺寸小，開關迅速、90°往復回轉，驅(qū)動力矩小等特點，用于截斷、接通、調(diào)節(jié)管路中的介質(zhì)，具有良好的流體控制特性和關閉密封性能。 </p> <p> 2、蝶閥可以運送泥漿，在管道口積存液體**少。低壓下，可以實現(xiàn)良好的密封。調(diào)節(jié)性能好。 </p> <p> 3、蝶板的流線型設計，使流體阻力損失小，可謂是一種節(jié)能型產(chǎn)品。 </p> <p> 4、閥桿為通桿結構，經(jīng)過調(diào)質(zhì)處理，有良好的綜合力學性能和抗腐蝕性，抗擦傷性。蝶閥啟閉時閥桿只作旋轉運動而不作升降運行，閥桿的填料不易破壞，密封可靠。與蝶板錐銷固定，外伸端為防沖出型設計，以免在閥桿與蝶板連接處意外斷裂時閥桿崩出。 </p> <p> 5、連接方式有法蘭連接、對夾連接、對焊連接及凸耳對夾連接。 </p> <p> 驅(qū)動形式有手動、蝸輪傳動、電動、氣動、液動、電液聯(lián)動等執(zhí)行機構，可實現(xiàn)遠距離控制和自動化操作。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海官方真空管道蝶閥重量" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/8647630.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(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，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><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海官方真空管道蝶閥重量" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496894532/5616452.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/89506.html</p></div></div></div></div></div><div id="fhtlnvf" class="page-right twoColRt"><div id="ztvh7b7" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xvp7trb" class="recomPic likePro"><a 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