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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8pjl8xz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448713857422/4498936.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3woqa93" 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>深圳蝸輪操作止回閥費(fèi)用,止回閥</p><p><span>***更新：</span>2021-01-27 06:08:19</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="3tfxutk" 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="oip8l7a" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="ix8mb98" class="box"><p><p style="text-indent:25px">止回閥是指啟閉件為圓形閥瓣并靠自身重量及介質(zhì)壓力產(chǎn)生動(dòng)作來(lái)阻斷介質(zhì)倒流的一種閥門。屬自動(dòng)閥類，又稱逆止閥、單向閥、回流閥或隔離閥。閥瓣運(yùn)動(dòng)方式分為升降式和旋啟式。升降式止回閥與截止閥結(jié)構(gòu)類似，*缺少帶動(dòng)閥瓣的閥桿。介質(zhì)從進(jìn)口端(下側(cè)）流入，從出口端（上側(cè)）流出。當(dāng)進(jìn)口壓力大于閥瓣重量及其流動(dòng)阻力之和時(shí)，閥門被開啟。反之，介質(zhì)倒流時(shí)閥門則關(guān)閉，深圳蝸輪操作止回閥費(fèi)用。旋啟式止回閥有一個(gè)斜置并能繞軸旋轉(zhuǎn)的閥瓣，深圳蝸輪操作止回閥費(fèi)用，工作原理與升降式止回閥相似。止回閥常用作抽水裝置的底閥，可以阻止水的回流。止回閥與截止閥組合使用，可以起到安全隔離的作用。缺點(diǎn)是阻力大，深圳蝸輪操作止回閥費(fèi)用，關(guān)閉時(shí)密封性差。電站止回閥還可用于給其中的壓力可能升至超過(guò)系統(tǒng)壓的輔助系統(tǒng)提供補(bǔ)給的管路上。深圳蝸輪操作止回閥費(fèi)用</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳蝸輪操作止回閥費(fèi)用,止回閥" src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448713857422/4498936.png"></div><p style="text-indent:25px">止回閥的選型標(biāo)準(zhǔn)內(nèi)容如下：球形止回閥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、一般在公稱通徑50mm的水平管道上都應(yīng)選用臥式升降止回閥；4、直通式升降止回閥只能在水平管道安裝；5、對(duì)于水泵進(jìn)口管路，宜選用底閥，底閥一般只安裝在泵進(jìn)口的垂直管道上，并且介質(zhì)自下而上流動(dòng)；6、升降式較旋啟式密封性好，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，公稱壓力可達(dá)到42MPa，而且公稱通徑也可以做到很大，比較大可以達(dá)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。四川高溫高壓旋啟止回閥費(fèi)用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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳蝸輪操作止回閥費(fèi)用,止回閥" src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448559589844/9647506.png"></div><p style="text-indent:25px">旋啟式止回閥原理是利用管道系統(tǒng)中介質(zhì)本身的流動(dòng)產(chǎn)生的壓力作用而自動(dòng)打開和關(guān)閉閥板的；用于管路系統(tǒng)，它的主要作用是快速關(guān)閉，及時(shí)遏止管道內(nèi)流體介質(zhì)回流，有效解決泵及其驅(qū)動(dòng)電機(jī)機(jī)因反轉(zhuǎn)造成的故障；我廠生產(chǎn)的旋啟式止回閥另外還可用于補(bǔ)給壓力；如：給環(huán)保、化工等主系統(tǒng)壓力的輔助系統(tǒng)提供壓力補(bǔ)給；旋啟式止回閥規(guī)格參數(shù): 型號(hào)H44H-16C~250H44W-16P~250 工作壓力（MPa）1.6~25 適用溫度（℃）≤425≤550 適用介質(zhì)水、蒸汽、油品弱腐蝕性介質(zhì) 材料閥體、閥蓋、閥瓣碳素鋼鉻鎳鈦不銹鋼密封面碳鋼堆焊鐵基合金本體密封</p><p style="text-indent:25px">美標(biāo)電站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)。美標(biāo)電站止回閥的主要零件材料：閥體：WCB、25 2Cr1MoV WC6 WC9 閥蓋：25 12CrMoV 閥瓣、閥座 25堆STL鈷基硬質(zhì)合金 12CrMoV STL鈷基硬質(zhì)合金密封環(huán)增強(qiáng)柔性石墨美標(biāo)電站止回閥的優(yōu)點(diǎn)： 1. 閥瓣沿著閥體中心線滑動(dòng)的閥門。管道式止回閥是新出現(xiàn)的一種閥門，它的體積小，重量較輕，加工工藝性好，是止回閥發(fā)展方向之一。 2. 閥體及閥瓣的密封面采用不銹鋼堆焊。 3. 用于工業(yè)管道上作阻止介質(zhì)逆流的裝置。 4. 防止介質(zhì)倒流、防止泵及驅(qū)動(dòng)電動(dòng)機(jī)反轉(zhuǎn)，以及容器介質(zhì)的泄放。 5. 美標(biāo)電站止回閥是自動(dòng)工作的，在一個(gè)方向流動(dòng)的流體壓力作用下，閥瓣打開；流體反方向流動(dòng)時(shí)，由流體壓力和閥瓣的自重合閥瓣作用于閥座，從而切斷流動(dòng)。美標(biāo)電站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)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="深圳蝸輪操作止回閥費(fèi)用,止回閥" src="https://tyunfile.71360.com/UploadFile/jingzhou/637279448529589844/6717776.png"></div><p style="text-indent:25px">電站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(shí)，閥瓣在流體壓差、本身重力等因素作用下自動(dòng)關(guān)閉以防止流體倒流。止回閥一般分為升降式、旋啟式、蝶式及隔膜式等幾種類型。升降式止回閥的結(jié)構(gòu)一般與截止閥相似，其閥瓣沿著通道中以線作升降運(yùn)動(dòng)，動(dòng)作可靠，但流體阻力較大，適用于輕小口徑的場(chǎng)合。升降式止回閥可直通式和立式兩種。直通式升降止回閥一般只能安裝在水平管路，而立式升降止回閥一般就安裝在垂直管路。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。旋啟式止回閥有一介鉸鏈機(jī)構(gòu)，還有一個(gè)像門一樣的閥瓣自由地靠在傾斜的閥座表面上。深圳蝸輪操作止回閥費(fèi)用</p><p style="text-indent:25px">多瓣旋啟式止回閥適用于大口徑管路。深圳蝸輪操作止回閥費(fèi)用</p><p style="text-indent:25px">電站高溫鉻鉬鋼止回閥耐磨性能好，摩擦系數(shù)小,啟閉件靠介質(zhì)流動(dòng)和力量自行開啟或關(guān)閉，防止介質(zhì)倒流的閥門，動(dòng)作靈活可靠,密封性能優(yōu)良。本產(chǎn)品普遍應(yīng)用于石油、化工、制藥、電力、熱油、鍋爐、熱力行業(yè)等各種工況的管路上。電站高溫鉻鉬鋼止回閥是能自動(dòng)阻止流體倒流的閥門,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(shí)，閥瓣在流體壓差、本身重力等因素作用下自動(dòng)關(guān)閉以防止流體倒流。1.升降式止回閥的結(jié)構(gòu)一般與截止閥相似，其閥瓣沿著通道中心線作升降運(yùn)動(dòng)，動(dòng)作可靠，但流體阻力較大，適用于較小口徑的場(chǎng)合。升降式止回閥可分為直通式和立式兩種。直通式升降式止回閥一般只能安裝在水平管路，而立式升降止回閥一般應(yīng)安裝在垂直管路。深圳蝸輪操作止回閥費(fèi)用</p><p style="text-indent:25px">浙江京州閥門制造有限公司致力于機(jī)械及行業(yè)設(shè)備，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。公司自創(chuàng)立以來(lái)，投身于刀閘閥，穿透式刀閘閥，礦漿閥，漿液閥，是機(jī)械及行業(yè)設(shè)備的主力軍。浙江京州閥門致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶產(chǎn)品上的貼心，為用戶帶來(lái)良好體驗(yàn)。浙江京州閥門始終關(guān)注機(jī)械及行業(yè)設(shè)備市場(chǎng)，以敏銳的市場(chǎng)洞察力，實(shí)現(xiàn)與客戶的成長(zhǎng)共贏。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3031284.html</p></div></div></div></div></div><div id="dcrda94" class="page-right twoColRt"><div 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