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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>?陜西RH真空管道蝶閥等級頂耕國際貿(mào)易供應(yīng)</p><div id="dtfvhtx" class="leftbox clearfix"><h1>陜西RH真空管道蝶閥等級頂耕國際貿(mào)易供應(yīng)</h1><div id="vn99plz" class="proBig"><div id="7vp7d7f" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749328144532/3165155.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bb7z7dz" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749328144532/3165155.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="zr97rfd" 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>陜西RH真空管道蝶閥等級</p><p><span>***更新：</span>2020-06-03 16:15:59</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="97rdh59" 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(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="btplrd7" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="x77bdpl" class="box"><p><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(yīng)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，陜西RH真空管道蝶閥等級。4、鑄鐵鑄鐵用于溫度t≤100℃，陜西RH真空管道蝶閥等級、公稱壓力PN≤、煤氣和油類用的閘閥、截止閥、旋塞閥等。5，陜西RH真空管道蝶閥等級、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="陜西RH真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749328144532/3165155.png"></div><p> 液動閥門一般由液動閥門本體，液壓控制系統(tǒng)、電氣控制系統(tǒng)三部分組成，機電液一體化控制技術(shù)的水平，將決定液動閥門產(chǎn)品的技術(shù)水平。閥門常用的液壓驅(qū)動裝置有液壓缸直接推拉驅(qū)動式、齒輪齒條擺動油缸驅(qū)動式、螺線式擺動油缸驅(qū)動式和多回轉(zhuǎn)液壓馬達驅(qū)動式。液壓缸直接推拉驅(qū)動式裝置常用于操縱閘閥和截止閥的開啟、停止和關(guān)閉或控制節(jié)流閥的開口位置及通過流量。液壓缸直接推拉驅(qū)動式是將油缸置于閥門上方( 圖1) ，通過連接支架將閥門與油缸固定，由套、銷子將閥桿及油缸活塞桿連接。當(dāng)油缸活塞運動時帶動閥桿運動完成閥門的開啟、關(guān)閉、停止及閥門開度的調(diào)節(jié)。液壓油缸可根據(jù)管路系統(tǒng)對閥門的要求，采用雙作用油缸( 包括單活塞桿和雙活塞桿油缸) 用油壓完成對閥門的啟閉和開度調(diào)節(jié)。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西RH真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337304688/5807955.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。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="陜西RH真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737719785157/327671.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/134980.html</p></div></div></div></div></div><div id="nfh7jxt" class="page-right twoColRt"><div id="9hdht7f" class="box01 margin10 clearfix"><h3><a 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