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href="http://www.cdcfah.com/"><img src="/static/new_net_01/images/logo.png" alt="找產品網(wǎng)"></a></span><span id="8o6000e" class="tigs"> 發(fā)信息做推廣就找產品網(wǎng)<br />企業(yè)電商信息綜合服務平臺 </span><div id="kimaoku" class="searchbox"><div id="coq004w" class="searchLt"><div id="0my6u6g" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會</a></div><div id="au0smsc" class="clearfix searchWrap"><div id="msyouoy" class="searchInput"><input type="text" name="keywords" placeholder="請輸入搜索關鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="0awkuma" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產品供應</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a 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="uouoa2s" class="twoCol"><div id="0gcgmam" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產品供應</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設備</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>?浙江進口真空管道蝶閥等級頂耕國際貿易供應</p><div id="ycegs0a" class="leftbox clearfix"><h1>浙江進口真空管道蝶閥等級頂耕國際貿易供應</h1><div id="iie8isk" class="proBig"><div id="mye8qmq" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896738282/5305453.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="s44uwqi" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896738282/5305453.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yukokou" 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>產品關鍵詞：</span>浙江進口真空管道蝶閥等級</p><p><span>***更新：</span>2020-05-25 05:34:05</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="8wkayuq" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿易（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="80eu2aw" class="page-proshow02"><p class="title">詳細說明</p><div id="qskc8kw" class="box"><p><p> 蝶閥的選用原則： </p> <p> <br /> </p> <p> 1、由于蝶閥相對于閘閥，球閥壓力損失比較大，故適應于壓力損失要求不嚴的管路系統(tǒng)中 </p> <p> <br /> </p> <p> 2、由于蝶閥可以用流量調節(jié)，故在需要進行流量調節(jié)的管路中宜于選用 </p> <p> <br /> </p> <p> 3、由于蝶閥的結構和密封材料的限制，不宜用于高溫，高壓的管路系統(tǒng)。一般工作溫度在300℃以下，公稱壓力在PN40以下。 </p> <p> <br /> </p> <p> 4、由于蝶閥結構長度比較短，且又可以做成大口徑，浙江進口真空管道蝶閥等級，故在結構長度要求短的場合或是大口徑閥門（如DN1000以上），浙江進口真空管道蝶閥等級，浙江進口真空管道蝶閥等級，宜選用蝶閥。 </p> <p> <br /> </p> <p> 5、由于蝶閥*旋轉90°就能開啟或關閉，因此在啟閉要求快的場合宜選用蝶閥。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江進口真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896738282/5305453.jpg"></div><p> ⑴ 截止和開放介質用的閥門 </p> <p> 流道為直通式的閥門，其流阻較小，通常選擇作為截止和開放介質用的閥門。向下閉合式閥門（截止閥、柱塞閥）由于其流道曲折，流阻比其他閥門高，故較少選用。在允許有較高流阻的場合，可選用閉合式閥門。 </p> <p> ⑵ 控制流量用的閥門 </p> <p> 通常選擇易于調節(jié)流量的閥門作為控制流量用。向下閉合式閥門（如截止閥）適于這一用途，因為它的閥座尺寸與關閉件的行程之間成正比關系。旋轉式閥門（旋塞閥、蝶閥、球閥）和撓曲閥體式閥門（夾緊閥、隔膜閥）也可用于節(jié)流控制，但通常只能在有限的閥門口徑范圍內適用。閘閥是以圓盤形閘板對圓形閥座口做橫切運動，它只有在接近關閉位置時，才能較好地控制流量，故通常不用于流量控制。 </p> <p> ⑶ 換向分流用的閥門 </p> <p> 根據(jù)換向分流的需要，這種閥門可有三個或更多的通道。旋塞閥和球閥較適用于這一目的，因此，大部分用于換向分流的閥門都選取這類閥門中的一種。但是在有些情況下，其他類型的閥門，只要把兩個或更多個閥門適當?shù)叵嗷ミB接起來，也可作換向分流用。 </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江進口真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337304688/5807955.png"></div><p> 常用的通徑單位有mm、寸、分，寸用”表示一、1寸=二、寸是公稱直徑的英制叫法，mm是國標公制叫法三、在管道的規(guī)格上沒有***的換算公式，對于小于100只能以1寸=25來模糊計算，取其相近的數(shù)，對于大于100的管子用1寸=25可以完全匹配計算。深圳名閥常用的如下：公稱直徑DN6對應的俗稱1分1/8寸公稱直徑DN8對應的俗稱2分1/4寸公稱直徑DN10對應的俗稱3分3/8寸公稱直徑DN15對應的俗稱4分1/2寸公稱直徑DN20對應的俗稱6分3/4寸公稱直徑DN25對應的俗稱1寸公稱直徑DN32對應的俗稱1寸2分11/4”公稱直徑DN40對應的俗稱1寸半11/2”公稱直徑DN50對應的俗稱2寸公稱直徑DN65對應的俗稱2寸半公稱直徑DN80對應的俗稱3寸公稱直徑DN100對應的俗稱4寸公稱直徑DN125對應的俗稱5寸公稱直徑DN150對應的俗稱6寸公稱直徑DN200對應的俗稱8寸以此類推。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江進口真空管道蝶閥等級" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896250000/4170655.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/33068.html</p></div></div></div></div></div><div id="aumksos" class="page-right twoColRt"><div id="y2cewg6" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8miuyaa" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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