甘肅RH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=" **閥門選用的注意事項(xiàng)本文詳述了**閥門選用的注意事項(xiàng)。常規(guī)閥門選用的注意事項(xiàng)本文詳述了常規(guī)閥門選用的注意事項(xiàng)，如閥門的使用要求、從工藝要求角度考慮、從操作方便角度考慮、從調(diào)節(jié)流量的準(zhǔn)確性考慮"><meta name="keywords" content="甘肅RH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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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>甘肅RH真空管道蝶閥哪家好</p><p><span>***更新：</span>2020-05-23 11:30:14</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="87g7pq8" 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="8y9n2yp" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="shbn8tv" class="box"><p><p> **閥門選用的注意事項(xiàng)本文詳述了**閥門選用的注意事項(xiàng)。常規(guī)閥門選用的注意事項(xiàng)本文詳述了常規(guī)閥門選用的注意事項(xiàng)，如閥門的使用要求、從工藝要求角度考慮、從操作方便角度考慮、從調(diào)節(jié)流量的準(zhǔn)確性考慮、從耐溫耐壓能力考慮、從可潔凈性考慮。閥門選用步驟本文詳述了選用閥門一般遵循的七個(gè)步驟。閥門的選用原則選用閥門應(yīng)滿足的基本原則：安全可靠性，甘肅RH真空管道蝶閥哪家好、滿足工藝生產(chǎn)要求、操作及安裝與檢(維)修方便，甘肅RH真空管道蝶閥哪家好、經(jīng)濟(jì)性。平板閘閥的密封原理本文講述了平板閘閥的密封原理，比如平行單閘板閘閥、自動密封式平行雙閘板閘閥、撐開式平行雙閘板等。平板閘閥的常見結(jié)構(gòu)平行式閘板兩密封面相互平行，并有平行式單閘板和平行式雙閘板之分。平板閘閥的基本特點(diǎn)平板閘閥是一個(gè)啟閉動作為直線運(yùn)動的閥門，本文講述了平板閘閥的基本特點(diǎn)。閘閥的結(jié)構(gòu)本文講述了閘閥的結(jié)構(gòu)，甘肅RH真空管道蝶閥哪家好，如閥體與閥蓋結(jié)構(gòu)、閥桿結(jié)構(gòu)、閥座結(jié)構(gòu)、縮徑。閘閥的常見分類閘閥有各種不同的結(jié)構(gòu)形式，其主要區(qū)別是所采用的密封元件結(jié)構(gòu)類型不同。本文講述了按閥桿分類和按結(jié)構(gòu)類型分類。閘閥的工作原理及特點(diǎn)閘閥又叫閘板閥,主要由閥體、閥蓋、閘板、閥桿、閥座和密封填料等部分組成。本文講述了閘閥的工作原理及特點(diǎn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅RH真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/3079327.png"></div><p> 它擔(dān)任閥門密封直接接觸的面。那閥門密封材料都有哪些呢，我們知道閥門密封圈材料有金屬和非金屬兩大類。閥門密封材料是閥門密封的重要組成部分，它擔(dān)任閥門密封直接接觸的面。那閥門密封材料都有哪些呢，我們知道閥門密封圈材料有金屬和非金屬兩大類。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(diǎn)。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≤。6銅合金銅合金常用材料有6-6-3錫青銅和58-2-2錳黃銅等。銅合金耐磨性好，適用于溫度t≤200℃、公稱壓力PN≤，常用于閘閥、截止閥、止回閥、旋塞閥等。7鉻不銹鋼鉻不銹鋼常用牌號有2Cr13、3Cr13經(jīng)調(diào)質(zhì)處理，耐腐蝕性能好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅RH真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png"></div><p> 安裝要求 </p> <p> 1、安裝位置、高度、進(jìn)出口方向必須符合設(shè)計(jì)要求，連接應(yīng)牢固緊密。 </p> <p> 2、安裝在保溫管道上的各類手動閥門，手柄均不得向下。 </p> <p> 3、閥門安裝前必須進(jìn)行外觀檢查，閥門的銘牌應(yīng)符合現(xiàn)行國家標(biāo)準(zhǔn)《通用閥門標(biāo)志》GB 12220的規(guī)定。對于工作壓力大于1.0 MPa 及在主干管上起到切斷作用的閥門，安裝前應(yīng)進(jìn)行強(qiáng)度和嚴(yán)密性能試驗(yàn)，合格后方準(zhǔn)使用。強(qiáng)度試驗(yàn)時(shí)，試驗(yàn)壓力為公稱壓力的1.5倍，持續(xù)時(shí)間不少于5min，閥門殼體、填料應(yīng)無滲漏為合格。嚴(yán)密性試驗(yàn)時(shí)，試驗(yàn)壓力為公稱壓力的1.1倍；試驗(yàn)壓力在試驗(yàn)持續(xù)的時(shí)間應(yīng)符合GB 50243標(biāo)準(zhǔn)要求，以閘板密封面無滲漏為合格。 </p> <p> 大口徑閘閥適用于 Class150 ～ 2500 、工作溫度 -29～425℃（碳鋼）或 -29～500℃（不銹鋼）的小口徑管路上，用于截?cái)嗷蚪油ü苈分械慕橘|(zhì)，選用不同的材質(zhì)，可分別適用于水、蒸汽、油品、硝酸、醋酸、氧化性介質(zhì)、尿素等多種介質(zhì)。在石油管道上應(yīng)用較多。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅RH真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749328144532/3165155.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/17675.html</p></div></div></div></div></div><div id="dszq5eg" class="page-right twoColRt"><div id="3fe2fw4" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ic3jqsh" class="recomPic likePro"><a 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