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id="xkgrtte" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機(jī)械及行業(yè)設(shè)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>?浙江德國真空管道蝶閥品牌頂耕國際貿(mào)易供應(yīng)</p><div id="ew2njuk" class="leftbox clearfix"><h1>浙江德國真空管道蝶閥品牌頂耕國際貿(mào)易供應(yīng)</h1><div id="yqouhb2" class="proBig"><div id="qci7ayf" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737890507813/9234469.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="dpk8blf" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737890507813/9234469.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="a7ar9m2" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>浙江德國真空管道蝶閥品牌</p><p><span>***更新：</span>2020-06-01 10:21:40</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="dmghe8u" 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(jī): </span>021-61637356</p><p><span>地址: </span>大葉公路5225號(hào)1幢2370室</p><p>[當(dāng)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="bop3nn3" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="lyuktjd" class="box"><p><p> <p> 國外閥門密封等級(jí)的選用 </p> 前蘇聯(lián)對(duì)閥門密封等級(jí)分類主要是20世紀(jì)50年代應(yīng)用，隨著前蘇聯(lián)的解體，現(xiàn)大多數(shù)國家都不選用此密封等級(jí)分類，而是選用歐美標(biāo)準(zhǔn)的密 </p> <p> <br /> </p> <p> 封等級(jí)分類。歐洲標(biāo)準(zhǔn)EN 12266—1密封等級(jí)分類符合國際標(biāo)準(zhǔn)化組織標(biāo)準(zhǔn)ISO 5208的規(guī)定，但缺AA、CC和EE三個(gè)等級(jí)。ISO 5208與1999版相比，新增了AA，浙江德國真空管道蝶閥品牌、CC、E，浙江德國真空管道蝶閥品牌、EE、F和G六個(gè)等級(jí)，浙江德國真空管道蝶閥品牌。ISO 5208標(biāo)準(zhǔn)給出了與API 598和EN 12266標(biāo)準(zhǔn)幾個(gè)密封等級(jí)的比較。 </p> <p> <br /> </p> <p> ④。其他公稱尺寸密封等級(jí)的比較可按口徑計(jì)算泄漏量得出 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江德國真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737890507813/9234469.jpg"></div><p> 1、蝶閥具有結(jié)構(gòu)簡單、體積小、重量輕、材料耗用省，安裝尺寸小，開關(guān)迅速、90°往復(fù)回轉(zhuǎn)，驅(qū)動(dòng)力矩小等特點(diǎn)，用于截?cái)?、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(guān)閉密封性能。 </p> <p> 2、蝶閥可以運(yùn)送泥漿，在管道口積存液體**少。低壓下，可以實(shí)現(xiàn)良好的密封。調(diào)節(jié)性能好。 </p> <p> 3、蝶板的流線型設(shè)計(jì)，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(jié)構(gòu)，經(jīng)過調(diào)質(zhì)處理，有良好的綜合力學(xué)性能和抗腐蝕性，抗擦傷性。蝶閥啟閉時(shí)閥桿只作旋轉(zhuǎn)運(yùn)動(dòng)而不作升降運(yùn)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(shè)計(jì)，以免在閥桿與蝶板連接處意外斷裂時(shí)閥桿崩出。 </p> <p> 5、連接方式有法蘭連接、對(duì)夾連接、對(duì)焊連接及凸耳對(duì)夾連接。 </p> <p> 驅(qū)動(dòng)形式有手動(dòng)、蝸輪傳動(dòng)、電動(dòng)、氣動(dòng)、液動(dòng)、電液聯(lián)動(dòng)等執(zhí)行機(jī)構(gòu)，可實(shí)現(xiàn)遠(yuǎn)距離控制和自動(dòng)化操作。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江德國真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/8647630.png"></div><p> 氣動(dòng)蝶閥的軟密封：密封的兩側(cè)一側(cè)是金屬材料,另一側(cè)是有彈性的非金屬材料的被稱為軟密封.這種密封的密封性能較好,但不耐高溫,易磨損,機(jī)械性較差.如:鋼+橡膠;鋼+四氟聚乙烯;等.軟密封座采用具有一定強(qiáng)度、硬度和耐溫性能的非金屬材料制作，密封性能好，可以作到零泄漏，但壽命和對(duì)溫度的適應(yīng)性比較差。氣動(dòng)蝶閥的硬密封：采用金屬制作，密封性能相對(duì)比較差，盡管有制造商宣稱可以作到零泄漏。軟密封對(duì)一部分有腐蝕性的物料是不能滿足工藝要求的，硬密封可以解決！這兩種密封可以相互補(bǔ)充的，就密封性而言軟密封相對(duì)較好，但是現(xiàn)在硬密封的密封性也能夠滿足相應(yīng)的要求！軟密封的優(yōu)點(diǎn)是密封性能好，缺點(diǎn)是容易老化、磨損、使用壽命短。硬密封使用壽命長，但是密封性相對(duì)比軟密封差。其結(jié)構(gòu)上的區(qū)別主要有以下幾點(diǎn)：1、結(jié)構(gòu)上的區(qū)別：軟密封蝶閥多為中線型硬密封多為單偏心、雙偏心、三偏心蝶閥2、耐溫：軟密封用于常溫環(huán)境。硬密封可用于低溫、常溫、高溫等環(huán)境3、壓力：軟密封低壓-常壓，硬密封還可以使用于中高壓等工況4、密封性能:軟密封和三偏心硬密封蝶閥密封性能比較好，三偏心蝶閥在高壓高溫環(huán)境下可以保持良好的密封。鑒于以上特點(diǎn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江德國真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737493554688/8379117.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/107942.html</p></div></div></div></div></div><div id="xp8bvgq" class="page-right 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