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class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024375351562/9522742.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="33rtkrd" 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>甘肅省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>銀川止回閥市場報價,止回閥</p><p><span>***更新：</span>2021-02-04 03:10:23</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="mgsmxja" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">甘肅誠禹惠物資有限公司</a></p><p><span>聯(lián)系人：</span>楊和平</p><p><span>郵箱: </span>349134533@qq.com</p><p><span>電話: </span>18294448288</p><p><span>傳真: </span>0931_</p><p><span>網(wǎng)址: </span>http://www.gscyhwz.com</p><p><span>手機: </span>0931-7840458</p><p><span>地址: </span>北濱河西路1226之27號(立達建材城A區(qū)11棟104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="vp872cc" class="page-proshow02"><p class="title">詳細說明</p><div id="e2yfmy8" class="box"><p><p> <span style="font-size:16px;">"止回閥"的選型1為了防止介質(zhì)逆流，在設(shè)備、裝置和管道上都應(yīng)安裝止回閥；2止回閥一般適用于清凈介質(zhì)，不宜用于含有固體顆粒和粘度較大的介質(zhì)；3一般在公稱通經(jīng)50mm的水平管道上都應(yīng)選用立式升降止回閥；4直通式升降止回閥在水平管道和垂直管道上都可安裝；5對于水泵進口管路，宜選用底閥，底閥一般只安裝在泵進口的垂直管道上，并且介質(zhì)自下而上流動；6升降式旋啟式密封性好，流體阻力大，臥式宜裝在水平管道上，銀川止回閥市場報價，立式裝在垂直管道上；7旋啟式止回閥的安裝位置不受限制，它可裝在水平、垂直或傾斜的管線上，如裝在垂直管道上，介質(zhì)流向要由下而上；旋啟式止回閥不宜制成小口徑閥門、可以做成很高的工作壓力，PN可達到42MPa，而且DN也可以做到很大，比較大可以達到2000mm以上。根據(jù)殼體及密封件的材質(zhì)不同可以適用任何工作介質(zhì)和任何工作溫度范圍。介質(zhì)為水、蒸汽、氣體、腐蝕性介質(zhì)、油品，銀川止回閥市場報價、藥品，銀川止回閥市場報價、等。介質(zhì)工作溫度范圍在-196--800℃之間。</span> 蝶式止回閥分為蝶式雙瓣、蝶式單瓣。銀川止回閥市場報價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="銀川止回閥市場報價,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024375351562/9522742.png"></div><p> <span style="font-size:16px;">閉止回閥緩閉止回閥是一種通過增加執(zhí)行機構(gòu)、阻尼器而實現(xiàn)緩慢關(guān)閉的止回閥。緩閉止回閥需要配合開關(guān)閥使用。當介質(zhì)在重力作用下倒流時，止回閥緩慢關(guān)閉，有效地避免了因普通止回閥突然關(guān)閉產(chǎn)生的水錘。其缺點為因為關(guān)閉速度較慢，一部分介質(zhì)不可避免地倒流進入離心泵，泵因此可能會產(chǎn)生機械故障。2、設(shè)置緩閉止回蝶閥這是一種在大型水利系統(tǒng)中應(yīng)用比較普遍、效果比較好的方法。緩閉止回蝶閥由蝶閥、執(zhí)行結(jié)構(gòu)及液壓控制系統(tǒng)構(gòu)成。該系統(tǒng)只需安裝緩閉止回蝶閥即可，即能起到止回閥的作用又能起到開關(guān)閥的作用。當離心泵開啟的時候，其按先慢后快的步驟開啟，保證泵低載開啟;當泵突然停止工作時，其按先快后慢的步驟關(guān)閉，即可以避免水錘的產(chǎn)生，又可以避免過多的介質(zhì)倒流通過泵，引起泵的機械故障。</span> 銀川止回閥市場報價升降式止回閥可分為立式和直通式兩種。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="銀川止回閥市場報價,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png"></div><p> <span style="font-size:16px;">止回閥又叫逆止閥，是一種自動閥門，它依靠管道內(nèi)流動介質(zhì)的壓力推動閥瓣，來實現(xiàn)閥門的關(guān)閉和開啟，當介質(zhì)停止流動，止回閥閥瓣關(guān)閉，它能有效防止管道內(nèi)介質(zhì)發(fā)生倒流，這對于保障管道的安全起到了很大的作用。止回閥按結(jié)構(gòu)劃分，可分為升降式止回閥、旋啟式止回閥和蝶式止回閥三種。升降式止回閥可分為立式和直通式兩種。旋啟式止回閥分為單瓣式、雙瓣式和多瓣式三種。蝶式止回閥分為蝶式雙瓣、蝶式單瓣，以上幾種止回閥在連接形式上可分為螺紋連接、法蘭連接、焊接和對夾式連接四種。安裝止回閥是為了保證水泵內(nèi)部水流的流向，從而保障水泵的正常工作。所以關(guān)于止回閥的安裝位置，到底是安裝在水泵前還是水泵后，也可以分為兩種情況,具體情況對應(yīng)具體方法。</span> </p><p> <span style="font-size:16px;">適用場合是低壓大口徑，而且安裝場合受到限制；蝶式止回閥的安裝位置不受限制，可以安裝在水平管路上，也可以安裝在垂直或傾斜的管線上；隔膜式止回閥適用于易產(chǎn)生水擊的管路上，隔膜可以很好地消除介質(zhì)逆流時產(chǎn)生的水擊，它一般使用在低壓常溫管道上，特別適用于自來水管道上，一般介質(zhì)工作溫度在-12--120℃之間，工作壓力<，但隔膜式止回閥可以做到較大口徑，DN比較大可以達到2000mm以上；球形止回閥適用于中低壓管路，可以制成大口徑；球形止回閥的殼體材料可以用不銹鋼制作，密封件的空心球體可以包裹聚四氟乙烯工程塑料，所以在一般腐蝕性介質(zhì)的管路上也可應(yīng)用，工作溫度在-101--150℃之間，其公稱壓力≤，公稱通經(jīng)范圍在200—1200之間；對于不可壓縮性流體用止回閥選擇時首先要對所需要的關(guān)閉速度進行評估，第二步是選擇可能滿足所需要的關(guān)閉速度的止回閥的類型；對于可壓縮性流體用止回閥選擇時可以根據(jù)不可壓縮性流體用止回閥的類似方法來進行選擇，如果介質(zhì)流動范疇很大，則用于可壓縮性流體的止回閥可使用一減速裝置，如果介質(zhì)流連續(xù)不段地快速停止和啟動，如壓縮機的出口那樣，則使用升降式止回閥。</span> 止回閥閥瓣關(guān)閉，它能有效防止管道內(nèi)介質(zhì)發(fā)生倒流。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="銀川止回閥市場報價,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024300068359/4895710.png"></div><p> <span style="font-size:16px;">"止回閥"的選型1為了防止介質(zhì)逆流，在設(shè)備、裝置和管道上都應(yīng)安裝止回閥；2止回閥一般適用于清凈介質(zhì)，不宜用于含有固體顆粒和粘度較大的介質(zhì)；3一般在公稱通經(jīng)50mm的水平管道上都應(yīng)選用立式升降止回閥；4直通式升降止回閥在水平管道和垂直管道上都可安裝；5對于水泵進口管路，宜選用底閥，底閥一般只安裝在泵進口的垂直管道上，并且介質(zhì)自下而上流動；6升降式旋啟式密封性好，流體阻力大，臥式宜裝在水平管道上，立式裝在垂直管道上；7旋啟式止回閥的安裝位置不受限制，它可裝在水平、垂直或傾斜的管線上，如裝在垂直管道上，介質(zhì)流向要由下而上；8旋啟式止回閥不宜制成小口徑閥門、可以做成很高的工作壓力，PN可達到42MPa，而且DN也可以做到很大，比較大可以達到2000mm以上。根據(jù)殼體及密封件的材質(zhì)不同可以適用任何工作介質(zhì)和任何工作溫度范圍。介質(zhì)為水、蒸汽、氣體、腐蝕性介質(zhì)、油品、藥品、等。介質(zhì)工作溫度范圍在-196--800℃之間。</span> 要用于介質(zhì)單向流動的管路上。銀川止回閥市場報價</p><p style="text-indent:25px">安裝止回閥是為了保證水泵內(nèi)部水流的流向，從而保障水泵的正常工作。銀川止回閥市場報價</p><p> <span style="font-size:16px;">倒流防止器的原理作用：防止水倒流.但無防污性能,當止回密封面失效，不能有效防止水的回流污染。設(shè)有倒流防止器的管段,不需要再設(shè)止回閥；反之不能替代。1、正向通水進口壓力大于出口壓力時，兩個止回閥瓣開啟，排水器關(guān)閉。在2m/s流速時，流通水損小于。2、反向關(guān)閉進口壓力小于等于出口壓力時，兩個止回閥瓣關(guān)閉，排水器開啟。如果沒有垃圾卡阻，兩個止回閥瓣密封關(guān)閉，排水器出口不排水，中間腔與大氣相通，中間腔壓力為零。3、防止回流污染進口壓力小于出口壓力時，兩個止回閥瓣處于關(guān)閉狀態(tài)，排水器處于開啟狀態(tài)如果其中一個或兩個止回閥瓣的閥口有垃圾卡阻，產(chǎn)生滲漏，所漏介質(zhì)均流向中間腔，經(jīng)過排水器直接排出閥外，防止對進口端的回流污染。</span> 銀川止回閥市場報價</p><p style="text-indent:25px">甘肅誠禹惠物資有限公司總部位于北濱河西路1226之27號(立達建材城A區(qū)11棟104室)，是一家閥門及配件、水泵、水暖器材、五金交電、機械設(shè)備、建筑材料、管道管材管件、電子產(chǎn)品（不含衛(wèi)星地面接收設(shè)施）、塑料制品、辦公用品、勞保用品、金屬制品及材料、消防器材、五金工具、成套設(shè)備、電線電纜、冶金機械、石化機械、家用電器、機械設(shè)備、機電設(shè)備及配件、保溫材料、裝潢材料、玻璃儀器、燈具、化工產(chǎn)品（不含危險化學(xué)品、易制毒化學(xué)品、監(jiān)控化學(xué)品）的批發(fā)、零售的公司。甘肅誠禹惠物資擁有一支經(jīng)驗豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供誠禹惠閥門，球閥批發(fā)，閥門批發(fā)，蝶閥批發(fā)。甘肅誠禹惠物資繼續(xù)堅定不移地走高質(zhì)量發(fā)展道路，既要實現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實現(xiàn)轉(zhuǎn)型再突破。甘肅誠禹惠物資始終關(guān)注機械及行業(yè)設(shè)備行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3150383.html</p></div></div></div></div></div><div id="efw3ieg" class="page-right twoColRt"><div id="2gx2s8z" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pzvcjvh" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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