四川真空精煉真空管道蝶閥哪家好頂耕國際貿(mào)易供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="閥門的種類繁多，說法也不完全統(tǒng)一，有的按用途分（如化工、石油、電站等）、有的按介質(zhì)分（如水蒸汽、空氣閥等）、有的按材質(zhì)分（如鑄鐵、鑄鋼、鍛鋼、不銹鋼、陶瓷、UPVC等）、有的按連接形式分（如內(nèi)螺紋、法蘭閥、對夾等）、有的按溫度分（如低溫閥、"><meta name="keywords" content="四川真空精煉真空管道蝶閥哪家好"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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clearfix"><h1>四川真空精煉真空管道蝶閥哪家好頂耕國際貿(mào)易供應(yīng)</h1><div id="mbt2pm3" class="proBig"><div id="ko3bik8" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737718496094/8657721.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8c7cegi" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737718496094/8657721.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="smonhjl" 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(guān)鍵詞：</span>四川真空精煉真空管道蝶閥哪家好</p><p><span>***更新：</span>2020-06-05 11:14:50</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="fur33fm" 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="dn7jbyv" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="uewgp39" class="box"><p><p> 閥門的種類繁多，說法也不完全統(tǒng)一，有的按用途分（如化工、石油、電站等）、有的按介質(zhì)分（如水蒸汽、空氣閥等）、有的按材質(zhì)分（如鑄鐵、鑄鋼、鍛鋼、不銹鋼、陶瓷、UPVC等）、有的按連接形式分（如內(nèi)螺紋、法蘭閥、對夾等）、有的按溫度分（如低溫閥、高溫閥等）。我國大多數(shù)習(xí)慣是按壓力和結(jié)構(gòu)種類來區(qū)分。即：按公稱壓力分：≤1.6MPa為低壓閥、壓力2.5、4.0、6.4MPa為中壓閥、≥10MPa為高壓閥、超過100MPa為超高壓閥，四川真空精煉真空管道蝶閥哪家好。按結(jié)構(gòu)種類分主要有： </p> <p> 旋塞閥、閘閥、截止閥、球閥—用于開啟或關(guān)閉管道的介質(zhì)流動。 </p> <p> 止回閥（包括底閥）—用于自動防止管道內(nèi)的介質(zhì)倒流。 </p> <p> 節(jié)流閥—用于調(diào)節(jié)管道介質(zhì)的流量。 </p> <p> 蝶閥—用于開啟或關(guān)閉管道內(nèi)的介質(zhì)。也可作調(diào)節(jié)用。 </p> <p> 安全閥—用于鍋爐、容器設(shè)備及管道上，當(dāng)介質(zhì)壓力超過規(guī)定數(shù)值時，能自動排除過剩介質(zhì)壓力，保證生產(chǎn)運行安全。 </p> <p> 減壓閥—用于自動降低管道及設(shè)備內(nèi)介質(zhì)壓力。系使介質(zhì)經(jīng)過閥瓣的間隙時，產(chǎn)生阻力造成壓力損失，達(dá)到減壓目的，四川真空精煉真空管道蝶閥哪家好。 </p> <p> 疏水器—用于蒸汽管道上自動排除冷凝水，防止蒸汽損失或泄漏，四川真空精煉真空管道蝶閥哪家好。 </p> <p> V型球閥—用于對介質(zhì)流量進(jìn)行調(diào)節(jié)，流量特性為等百分比。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川真空精煉真空管道蝶閥哪家好" src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737718496094/8657721.jpg"></div><p> 其質(zhì)量直接影響閥門的使用壽命。合理地選擇閥門密封面的材料是提高閥門使用壽命的重要途徑之一。在閥門密封面材料選用時應(yīng)避免走入誤區(qū)。誤區(qū)1:閥門密封面材料的硬度高其耐磨損性能就好。實驗表明,閥門密封面材料的耐磨損性能是由其金屬材料的組織結(jié)構(gòu)所決定的。有些以奧氏體為基體加少量硬質(zhì)相結(jié)構(gòu)的金屬材料其硬度并不很高,但其耐磨損性能很好。閥門密封面具有一定的高硬度是為避免被介質(zhì)中硬雜物墊傷和劃傷。綜合考慮,硬度值HRC35~45為宜。誤區(qū)2:閥門密封面材料的價格高其性能就好。材料的價格是其本身的商品特性,而材料的使用性能是其物理特性,兩者沒有必然聯(lián)系。鈷基合金中金屬鈷來源于進(jìn)口,價格較高,因而鈷基合金材料價格就高。鈷基合金的特點是高溫耐磨性能好,而用在常溫、中溫工況,則價格/性能比較高。在閥門密封面材料選用時應(yīng)選擇價格/性能比較低的材料。誤區(qū)3:閥門密封面材料在某一強(qiáng)腐蝕性介質(zhì)中耐蝕性良好,就一定適應(yīng)其他腐蝕性介質(zhì)。金屬材料的耐腐蝕性有其復(fù)雜的機(jī)理,一種材料在某一強(qiáng)腐蝕介質(zhì)中耐蝕性能良好,而條件稍有變化,如溫度或介質(zhì)濃度等改變,則耐蝕性能即改變。對另一種腐蝕性介質(zhì),其耐蝕性能變化更大。金屬材料的耐腐蝕性只能通過實驗得知。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川真空精煉真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496894532/5616452.png"></div><p> 1、金屬硬密封蝶閥采用三偏心密封結(jié)構(gòu)，閥座與蝶板幾乎無磨損，具有越關(guān)越緊的密封功能； </p> <p> 2、密封圈選用不銹鋼制作，具有金屬硬密封和彈性密封的雙重優(yōu)點，無論在低溫和高溫的情況下，均具有優(yōu)良的密封性能，具有耐腐蝕,使用壽命長等特點； </p> <p> 3、蝶板密封面采用堆焊鈷基硬質(zhì)合金，密封面耐磨損，使用壽命長； </p> <p> 4、大規(guī)格蝶板采用桁架結(jié)構(gòu)，強(qiáng)度高，過流面積大，流阻小； </p> <p> 5、本閥具有雙向密封功能，安裝時不受介質(zhì)流向的限制，也不受空間位置的影響，可在任何方向安裝； </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川真空精煉真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737890507813/9234469.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/156492.html</p></div></div></div></div></div><div id="o7w29b3" class="page-right twoColRt"><div id="smogdht" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="wq88iz8" 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" 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