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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>?重慶FSA真空管道蝶閥等級頂耕國際貿(mào)易供應</p><div id="aegw8em" class="leftbox clearfix"><h1>重慶FSA真空管道蝶閥等級頂耕國際貿(mào)易供應</h1><div id="0gmecu2" class="proBig"><div id="osgw0ok" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/3009218.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="okeuwa4" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/3009218.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ieucmoc" 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>重慶FSA真空管道蝶閥等級</p><p><span>***更新：</span>2020-06-03 13:14:21</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="iwo6aoc" 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="qy2cmks" class="page-proshow02"><p class="title">詳細說明</p><div id="iwe0uqw" class="box"><p><p> 優(yōu)點 </p> <p> 1、啟閉方便迅速、省力、流體阻力小，可以經(jīng)常操作。 </p> <p> 2、結(jié)構簡單，外形尺寸小，結(jié)構長度短，體積小，重量輕，適用于大口徑的閥門。 </p> <p> 3、可以運送泥漿，在管道口積存液體**少。 </p> <p> 4、低壓下，可以實現(xiàn)良好的密封。 </p> <p> 5、調(diào)節(jié)性能好。 </p> <p> 6、全開時閥座通道有效流通面積較大，流體阻力較小，重慶FSA真空管道蝶閥等級。 </p> <p> 7、啟閉力矩較小，由于轉(zhuǎn)軸兩側(cè)蝶板受介質(zhì)作用基本相等，而產(chǎn)生轉(zhuǎn)矩的方向相反，因而啟閉較省力，重慶FSA真空管道蝶閥等級。 </p> <p> 8、密封面材料一般采用橡膠、塑料、故低壓密封性能好。 </p> <p> 9、安裝方便。 </p> <p> 10、操作靈活省力，可選擇手動，重慶FSA真空管道蝶閥等級、電動、氣動、液壓方式。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶FSA真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/3009218.png"></div><p> 金屬硬密封蝶閥作為一種用來實現(xiàn)管路系統(tǒng)通斷及流量控制的部件，已在石油、化工、冶金、水電等許多領域中得到極為很多地應用。在已公知的蝶閥技術中，其密封形式多采用密封結(jié)構，密封材料為橡膠、聚四氟乙烯等。由于結(jié)構特征的限制，不適應耐高溫、高壓及耐腐蝕、抗磨損等行業(yè)?，F(xiàn)有一種比較先進的蝶閥是三偏心金屬硬密封蝶閥，閥體和閥座為連體構件，閥座密封表面層堆焊耐溫、耐蝕合金材料。多層軟疊式密封圈固定在閥板上，這種蝶閥與傳統(tǒng)蝶閥相比具有耐高溫，操作輕便，啟閉無磨擦，關閉時隨著傳動機構的力矩增大來補償密封，提高了蝶閥的密封性能及延長使用壽命的優(yōu)點。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶FSA真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737890810547/4528489.jpg"></div><p> 閥門密封是整個閥門中**重要的組成部分，其主要目的就是防止泄露，閥門密封座也叫密封圈，它是直接接與管路內(nèi)介質(zhì)接觸，并且阻止介質(zhì)流通的一個組織。閥門在使用中，管道內(nèi)有各種不同的介質(zhì)，如液體、氣體、油品、腐蝕性的介質(zhì)等等，而不同的閥門的密封件，使用的地方也不一樣，能夠適應各種不同的介質(zhì)。那么，閥門密封件材料主要可以分成兩大類，即為金屬材料和非金屬材料，非金屬密封一般多用于常溫常壓的管道，而金屬密封而使用范圍則比較廣，可用于高溫高壓！下面就簡單介紹一下各類密封材料的使用條件，以及常用的閥門類型。1、合成橡膠合成橡膠的耐油、耐溫、耐腐蝕等綜合性能優(yōu)于天然橡膠。一般合成橡膠的使用溫度t≤150℃，天然橡膠t≤60℃，橡膠用于公稱壓力PN≤1MPa的截止閥、閘閥、隔膜閥、蝶閥、止回閥、夾管閥等閥門的密封。2、尼龍尼龍具有摩擦系數(shù)小、耐腐蝕性好等特點。尼龍多用于溫度t≤90℃、公稱壓力PN≤32MPa的球閥、截止閥等。3、聚四氟乙烯聚四氟乙烯多用于溫度t≤232℃、公稱壓力PN≤、閘閥、球閥等。4、鑄鐵鑄鐵用于溫度t≤100℃、公稱壓力PN≤、煤氣和油類用的閘閥、截止閥、旋塞閥等。5、巴氏合金巴氏合金用于溫度t-70~150℃、公稱壓力PN≤。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶FSA真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337304688/5807955.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/134249.html</p></div></div></div></div></div><div id="0ygooeu" class="page-right twoColRt"><div id="rncrgql" class="box01 margin10 clearfix"><h3><a 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