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href="http://m.cdcfah.com/cp/third-famenti_zhihuifats/">止回閥</a>?遼寧600lb美標(biāo)高壓止回閥價(jià)格值得信賴浙江京州閥門制造供應(yīng)</p><div id="cmnepqr" class="leftbox clearfix"><h1>遼寧600lb美標(biāo)高壓止回閥價(jià)格值得信賴浙江京州閥門制造供應(yīng)</h1><div id="isja8j8" class="proBig"><div id="txiza38" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448507832031/6100074.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="z8vws8y" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448507832031/6100074.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="bgcdzaw" 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>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>遼寧600lb美標(biāo)高壓止回閥價(jià)格</p><p><span>***更新：</span>2020-06-25 10:24:52</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="shizf28" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">浙江京州閥門制造有限公司</a></p><p><span>聯(lián)系人：</span>張和榮</p><p><span>郵箱: </span>maggiez@jcs-valve.com</p><p><span>電話: </span>15888733099</p><p><span>傳真: </span>0577_67351896</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0577-67359296</p><p><span>地址: </span>甌北街道五星工業(yè)區(qū)上玉路</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="w8zvw89" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="swsye8m" class="box"><p><p style="text-indent:25px">止回閥又稱單向閥或逆止閥，其作用是防止管路中的介質(zhì)倒流。水泵吸水關(guān)的底閥也屬于止回閥類。啟閉件靠介質(zhì)流動(dòng)和力量自行開啟或關(guān)閉，以防止介質(zhì)倒流的閥門叫止回閥。止回閥屬于自動(dòng)閥類，主要用于介質(zhì)單向流動(dòng)的管道上，只允許介質(zhì)向一個(gè)方向流動(dòng)，以防止發(fā)生危險(xiǎn)事件。　　常見故障有： 1、閥瓣打碎； 2、介質(zhì)倒流?！　?引起閥瓣打碎的原因是：止回閥前后介質(zhì)壓力處于接近一種平衡而又互相“拉鋸”的狀態(tài)，閥瓣經(jīng)常與閥座拍打，某些脆性材料（如鑄鐵，遼寧600lb美標(biāo)高壓止回閥價(jià)格，遼寧600lb美標(biāo)高壓止回閥價(jià)格，黃銅等）做成的閥瓣就被打碎。預(yù)防的辦法是采用閥瓣為韌性材料的止回閥，遼寧600lb美標(biāo)高壓止回閥價(jià)格?！　?介質(zhì)倒流的原因有： 1、密封面破壞； 2、夾入雜質(zhì)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧600lb美標(biāo)高壓止回閥價(jià)格" src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448507832031/6100074.png"></div><p style="text-indent:25px">旋啟式止回閥的閥瓣繞轉(zhuǎn)軸作旋轉(zhuǎn)運(yùn)動(dòng)。其流體阻力一般小于升降式止回閥，它適用于較大口徑的場(chǎng)合。旋啟式止回閥根據(jù)閥瓣的數(shù)目可分為單瓣旋啟式、雙瓣旋啟式及多瓣旋啟式三種。單瓣旋啟式止回閥一般適用于中等口徑的場(chǎng)合。大口徑管路選用單瓣旋啟式止回閥時(shí)，為減少水錘壓力，比較好的是采用能減小水錘壓力的緩閉止回閥。雙瓣旋啟式止回閥適用于大中口徑管路。對(duì)夾雙瓣旋啟式止回閥結(jié)構(gòu)小、重量輕，是一種發(fā)展較快的止回閥;多瓣旋啟式止回閥適用于大口徑管路。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧600lb美標(biāo)高壓止回閥價(jià)格" src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448559589844/9647506.png"></div><p style="text-indent:25px">2、國(guó)標(biāo)止回閥瓣沿著閥體垂直中心線滑動(dòng)的止回閥，內(nèi)螺紋止回閥只能安裝在水平管道上，在高壓小口徑止回閥上閥瓣可采用圓球。蝶式止回閥的閥體形狀與截止閥一樣(可與截止閥通用)，因此它的流體阻力系數(shù)較大。其結(jié)構(gòu)與截止閥相似，閥體和閥瓣與截止閥相同。閥瓣上部和閥蓋下部加工有導(dǎo)向套簡(jiǎn)，閥瓣導(dǎo)向簡(jiǎn)可在閥盞導(dǎo)向簡(jiǎn)內(nèi)自由升降，當(dāng)介質(zhì)順流時(shí)，閥瓣靠介質(zhì)推力開啟，當(dāng)介質(zhì)停流時(shí)，閥瓣靠自垂降落在閥座上，起阻止介質(zhì)逆流作用。直通式蝶式止回閥介質(zhì)進(jìn)出口通道方向與閥座通道方向垂直;立式升降式止回閥，其介質(zhì)進(jìn)出口通道方向與閥座通道方向相同，其流動(dòng)阻力較直通式小。</p></p><br 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