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href="http://www.cdcfah.com/cp/third-famenti_qitafamenbd/">其他閥門</a>?華亭止回閥價格甘肅誠禹惠物資供應(yīng)</p><div id="jev8g3z" class="leftbox clearfix"><h1>華亭止回閥價格甘肅誠禹惠物資供應(yīng)</h1><div id="x3c7n73" class="proBig"><div id="kb3gagi" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mgdvxeq" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tskrtax" 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>華亭止回閥價格,止回閥</p><p><span>***更新：</span>2020-10-19 16:10:57</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="g73cjgs" 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(jī): </span>0931-7840458</p><p><span>地址: </span>北濱河西路1226之27號(立達(dá)建材城A區(qū)11棟104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="jdvceg7" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ba7ldau" class="box"><p><p> <span style="font-size:16px;">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，華亭止回閥價格。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，華亭止回閥價格。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，可以分兩種情況：一種是安裝在水泵前豎吸管端頭，也叫底閥。目的是為了不用抽一次水向水泵充一次水，因?yàn)樗脙?nèi)以及泵前的吸管內(nèi)無水時水泵只能空轉(zhuǎn)抽不上水，華亭止回閥價格，所以水泵內(nèi)必須充滿水才能抽出水。這種水泵的安裝是高于液面時的一種方法，也叫負(fù)壓法。</span> 一種是安裝在水泵前豎吸管端頭，也叫底閥。華亭止回閥價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="華亭止回閥價格,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024406582031/6664710.png"></div><p> <span style="font-size:16px;">止回閥過大會導(dǎo)致流速低，從而無法保持閥門始終打開。這會導(dǎo)致不穩(wěn)定，閥可能會顫動或顫動。反過來，由于頻繁地更換閥門/閥芯，以及由于修理或更換止回閥而導(dǎo)致的其他系統(tǒng)停機(jī)，這會導(dǎo)致閥門過早的機(jī)械磨損以及可能帶來的額外維護(hù)成本。止回閥尺寸過小會導(dǎo)致通過該閥的流量過高，從而導(dǎo)致系統(tǒng)中不必要的高壓力損失。它還可能在流中產(chǎn)生過度的湍流，這可能導(dǎo)致閥不穩(wěn)定并增加機(jī)械磨損，從而導(dǎo)致更高的維護(hù)成本。同樣，通過尺寸過小的閥門的較高流速可能會增加閥門內(nèi)部的腐蝕磨損。閥門的流量系數(shù)Cv用于計(jì)算壓力損失。對于水，Cv是壓差為1psi（lb/平方英寸）時的流量，單位為gpm（gal/min）。對于SI單位，Kv是相似的流量系數(shù)：對于水，壓差為1bar時。</span> 崇信止回閥批發(fā)折形流道，不宜用于壓力脈動工況條件;不宜用于高壓氧氣介質(zhì)工況條件;不能用于有通球要求的工況條件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="華亭止回閥價格,止回閥" src="https://tyunfile.71360.com/UploadFile/gscyhwz/637318024128642578/100910.png"></div><p> <span style="font-size:16px;">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臥式兩種。旋啟式止回閥分為單瓣式、雙瓣式和多瓣式三種。蝶式止回閥為直通式、以上幾種止回閥在連接形式上可分為螺紋連接、法蘭連接和焊接三種。止回閥是能自動阻止流體倒流的閥門。止回閥的閥瓣在流體壓力作用下開啟，流體從進(jìn)口側(cè)流向出口側(cè)。當(dāng)進(jìn)口側(cè)壓力低于出口側(cè)時，閥瓣在流體壓差、本身重力等因素作用下自動關(guān)閉以防止流體倒流。排水止回閥是當(dāng)市政污水管道中的水面高于地下室地面或用水潔具高度時（通常是由于暴雨等原因造成洪水泛濫），防止市政污水倒灌到地下室的裝置。當(dāng)污水倒流時，閥門會自動關(guān)閉，保護(hù)地下室免遭水患。所以要記住哦。</span> </p><p> <span style="font-size:16px;">消聲止回閥主要適用于高層建筑供水、排水系統(tǒng)，消防管道給水系統(tǒng)等。此消聲止回閥可有效地防止介質(zhì)倒流而產(chǎn)生破壞性水錘，保護(hù)水泵和管道其它設(shè)備。1、閥瓣采用頭”外形設(shè)計(jì)，閥體采用“腰鼓”外形設(shè)計(jì)，改善介質(zhì)流向，降低流阻系數(shù)。2、閥門采用短結(jié)構(gòu)形式，雖然水頭損失比升降式靜音止回閥稍大些，但體積小、價格便宜。3、結(jié)構(gòu)緊湊，導(dǎo)向軸與導(dǎo)向架之間裝有非金屬潤滑套，閥瓣升降靈活，不會產(chǎn)生抱死現(xiàn)象。4、骨架式橡膠密封圈直接鑲嵌在閥體上，避免了介質(zhì)長時間對密封圈的直接沖刷，使用壽命明顯延長，堅(jiān)固、耐用。5、閥瓣啟閉行程短，可以有效的防止水錘產(chǎn)生。6、適用于給排水系統(tǒng)，高層建筑管網(wǎng)，可安裝在泵的出口處，結(jié)構(gòu)稍加改動，可做為吸水底閥使用，但不適用于污水管網(wǎng)。</span> 止回閥的安裝位置如何確定呢？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="華亭止回閥價格,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(jī)構(gòu)、阻尼器而實(shí)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(dāng)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(diǎn)為因?yàn)殛P(guān)閉速度較慢，一部分介質(zhì)不可避免地倒流進(jìn)入離心泵，泵因此可能會產(chǎn)生機(jī)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(dāng)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(dāng)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(jī)械故障。</span> 泵前安裝與泵后安裝止回閥有何區(qū)別？定西止回閥廠家</p><p style="text-indent:25px">對于大直徑管道(例如DN400及以上)，宜采用Tilting旋啟式止回閥;華亭止回閥價格</p><p> <span style="font-size:16px;">止回閥是指依靠介質(zhì)本身流動而自動開、閉閥瓣，用來防止介質(zhì)倒流的閥門，又稱逆止閥、單向閥、逆流閥、和背壓閥。止回閥屬于一種自動閥門，其主要作用是防止介質(zhì)倒流、防止泵及驅(qū)動電動機(jī)反轉(zhuǎn)，以及容器介質(zhì)的泄放止回閥根據(jù)其結(jié)構(gòu)和安裝方式主要分為：升降式止回閥、旋啟式止回閥、蝶式止回閥、管道式止回閥和壓緊式止回閥。作為配管專業(yè)當(dāng)然就是要考慮止回閥的安裝方式</span><span style="font-size:16px;">了。止回閥的安裝要求：1.升降式止回閥，閥瓣是沿著閥體垂直中心線滑動的止回閥，閥門型號是H41——，升降式止回閥只能安裝在水平管道上。2.旋啟式止回閥，閥瓣是圍繞閥座外的銷軸旋轉(zhuǎn)的止回閥，閥門型號是H44——，水平和垂直管道都可以，只是安裝方向有要求。不過比較好還是水平安裝，當(dāng)然對于介質(zhì)流動方向?yàn)閺南碌缴系?，也可以垂直安裝。3.碟式止回閥，閥瓣圍繞閥座內(nèi)的銷軸旋轉(zhuǎn)，閥門型號是H45——，碟式止只能安裝在水平管道上。4.管道式止回閥，它的閥瓣是沿著閥體中心線滑動的閥門，水平和垂直方向都可以，但是也是需要注意安裝方向的。5.壓緊式止回閥：一般是鍋爐給水和蒸汽切斷用閥，它具有升降式止回閥和截止閥或角閥的綜合機(jī)能，也是需要水平安裝。</span> 華亭止回閥價格</p><p 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