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href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="3g3g3rd" class="twoCol"><div id="6qul3ry" 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>?江蘇真空精煉真空管道蝶閥廠家供應(yīng) 頂耕國際貿(mào)易供應(yīng)</p><div id="mgdfmoa" class="leftbox clearfix"><h1>江蘇真空精煉真空管道蝶閥廠家供應(yīng) 頂耕國際貿(mào)易供應(yīng)</h1><div id="pzwyfwy" class="proBig"><div id="bqnugnz" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896542969/9655723.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7ah8m8v" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896542969/9655723.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="uyvplnu" 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>江蘇真空精煉真空管道蝶閥廠家供應(yīng)</p><p><span>***更新：</span>2020-05-26 12:32:34</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="sryvnz7" 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="8pwtvxz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="bqszrif" class="box"><p><p> 安裝說明： </p> <p> 1、安裝前必須仔細(xì)核對閥門的標(biāo)志、合格證是否符合使用要求，核實(shí)后應(yīng)進(jìn)行清潔處理。未安裝使用的閥門應(yīng)存放在干燥的室內(nèi)。保管時(shí)間較長的閥門，要定期清洗，吹干、涂防銹油。閥門兩端應(yīng)用盲板保護(hù)法蘭密封面。 </p> <p> 2、根據(jù)介質(zhì)流動方向進(jìn)行安裝；優(yōu)先考慮臥式安裝。 </p> <p> 3、蝶閥與管道的連接螺栓，安裝時(shí)應(yīng)按對角對方向多次擰緊，江蘇真空精煉真空管道蝶閥廠家供應(yīng)，不得單件一次擰緊，以防受力不均而造成法蘭連接處泄漏。 </p> <p> 4、蝶閥安裝時(shí)，應(yīng)以蝶板處于關(guān)閉位置為宜，防止雜物進(jìn)入閥腔搓傷密封面，用戶要試壓時(shí)，切要兩端用法蘭對夾裝好后試壓。 </p> <p> 5、閥門與管道連接時(shí)，要求管道上使用對焊鋼法蘭或蝶閥**法蘭。如果采用平焊鋼法蘭時(shí)，必須要求法蘭內(nèi)孔與墊圈內(nèi)孔一樣大，江蘇真空精煉真空管道蝶閥廠家供應(yīng)，以保證墊圈的有效密封面。 </p> <p> 6、電動蝶閥出廠時(shí)已將控制機(jī)構(gòu)的啟閉行程調(diào)好，為防止電源接通時(shí)方向搞錯(cuò)，用戶在首先次接通電源前，要先手動至關(guān)開位置的1/3初，江蘇真空精煉真空管道蝶閥廠家供應(yīng)。并檢查指示盤方向與閥門開啟方向是否一致。 </p> <p> 7、閥門在使用時(shí)，如發(fā)現(xiàn)故障，應(yīng)立即停止使用 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇真空精煉真空管道蝶閥廠家供應(yīng)" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896542969/9655723.jpg"></div><p> 又可用于深冷介質(zhì)。(3)橡膠O形圈：低壓狀態(tài)下，密封效果***。使用溫度受限制，如自然橡膠只能用于60℃。(4)塑料成型填料：一般做成三件式，也可做成其他外形。所用塑料以聚四氟乙烯為多。此外，例如，250℃蒸氣閥門中，用石棉盤根和鉛圈交替迭合，漏汽情況就會減輕；有閥門，介質(zhì)經(jīng)常變換，如以石棉盤根和聚四氟乙烯生料帶配合使用，密封效果便好些。為減輕對閥桿磨擦，有場所，可以加二硫化鉬(M0S2)或其他潤滑劑。對新穎填料，正進(jìn)行著索求。例如用聚丙烯腈纖維經(jīng)聚四氟乙烯乳液浸漬，又經(jīng)預(yù)氧化后，模具中燒結(jié)壓制，可以到密封性能優(yōu)良成型填料；又如用不銹鋼薄片與石棉制成波形填料，可耐高溫、高壓與侵蝕。3)波紋管密封化學(xué)工業(yè)和原子能工業(yè)迅速成長，易燃、易爆、劇毒和帶放射性物資增多，對閥門密封有了更嚴(yán)酷要求，有場所已沒法使用填料密封，發(fā)生了新密封形式－波紋管密封。這類密封不需填料，也叫無填料密封。波紋管兩頭，與別零件焊死。當(dāng)閥桿升降時(shí)，波紋管伸縮，波紋管自己不漏，介質(zhì)便沒法泄出。為保險(xiǎn)起見，往往采用波紋管與填料兩重密封。2靜密封什么是靜密封叫呢?靜密封通常是指兩個(gè)靜止面之間的密封。密封辦法主要是使用墊圈。1)墊圈材料。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇真空精煉真空管道蝶閥廠家供應(yīng)" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896738282/5305453.jpg"></div><p> 電動閥門和氣動閥門相比，前者結(jié)構(gòu)簡單，運(yùn)行可靠，對遠(yuǎn)距離操作點(diǎn)其動力源（電源或氣源）容易解決。缺點(diǎn)是價(jià)格較高，且防爆要求也較高。在選用時(shí)，應(yīng)綜合考慮動力源的可獲得性、價(jià)格和控制要求等因素。電動閥門選型：當(dāng)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(shí)，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(yùn)行時(shí)間和電動執(zhí)行器的形式； 3.是否要求防爆，防爆等級； 4.大氣防護(hù)等級； 5.過載保護(hù)要求，例如過行程保護(hù)、過扭矩保護(hù)等； 6.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(dāng)選用氣動閥門氣動執(zhí)行器的運(yùn)作原理可分為單作用和雙作用）時(shí)，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(yùn)行時(shí)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(hù)等級； 5.過載保護(hù)要求，例如過行程保護(hù)、過扭矩保護(hù)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="江蘇真空精煉真空管道蝶閥廠家供應(yīng)" 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/48201.html</p></div></div></div></div></div><div id="xmtlnz8" class="page-right twoColRt"><div id="azb32gi" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ejqxugs" 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(qiáng) 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(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="qaszbip" 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(gè)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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