中文字幕人妻一区二区三区,heyzo-3526,国产精品污网址在线观看,熟女无码高清裸体做爱

電動(dòng)法蘭截止閥是一種比較新型的閘閥類別，它有著自身結(jié)構(gòu)所*的一些*性，如開(kāi)關(guān)無(wú)摩擦，密封不易磨損，啟閉力矩小。

電動(dòng)法蘭截止閥產(chǎn)品優(yōu)點(diǎn)：
　　1． 流體阻力小，其阻力系數(shù)與同長(zhǎng)度的管段相等。
        2． 結(jié)構(gòu)簡(jiǎn)單、體積小、重量輕。
　　3． 緊密可靠，目前閘閥的密封面材料廣泛使用塑料、密封性好，在真空系統(tǒng)中也已廣泛使用。
　　4． 操作方便，開(kāi)閉迅速，從全開(kāi)到全關(guān)只要旋轉(zhuǎn)90°，便于遠(yuǎn)距離的控制。
　　5． 維修方便，閘閥結(jié)構(gòu)簡(jiǎn)單，密封圈一般都是活動(dòng)的，拆卸更換都比較方便。
　　6． 在全開(kāi)或全閉時(shí)，球體和閥座的密封面與介質(zhì)隔離，介質(zhì)通過(guò)時(shí)，不會(huì)引起閥門(mén)密封面的侵蝕。
　　7． 適用范圍廣，通徑從小到幾毫米，大到幾米，從高真空至高壓力都可應(yīng)用。
工作原理
　　電動(dòng)截止閥,美標(biāo)閘閥的工作原理是靠旋轉(zhuǎn)閥戀來(lái)使閥門(mén)暢通或閉塞。閘閥開(kāi)關(guān)輕便，體積小，可以做成很大口徑，密封可靠，結(jié)構(gòu) 簡(jiǎn)單，維修方便，密封面與球面常在閉合狀態(tài)，不易被介質(zhì)沖蝕，在各行業(yè)得到廣泛的應(yīng)用。
電動(dòng)截止閥在管路中主要用來(lái)做切斷、分配和改變介質(zhì)的流動(dòng)方向。
電動(dòng)法蘭截止閥廣泛適用于石油化工、城市給排水等要求嚴(yán)格切斷的工況。

J941H-10C DN32/J941H-10C DN40/J941H-10C DN50/J941H-10C DN65/J941H-10C DN80/J941H-10C DN100/J941H-10C DN125/J941H-10C DN150/J941H-10C DN200/J941H-10C DN250/J941H-10C DN300/J941H-10C DN350/J941H-10C DN400/J941H-10C DN450/J941H-10C DN500/J941H-10C DN600/J941H-10C DN700/J941H-10C DN800/J941H-10C DN900/J941H-10C DN1000/J941H-16C DN32/J941H-16C DN40/J941H-16C DN50/J941H-16C DN65/J941H-16C DN80/J941H-16C DN100/J941H-16C DN125/J941H-16C DN150/J941H-16C DN200/J941H-16C DN250/J941H-16C DN300/J941H-16C DN350/J941H-16C DN400/J941H-16C DN450/J941H-16C DN500/J941H-16C DN600/J941H-16C DN700/J941H-16C DN800/J941H-16C DN900/J941H-16C DN1000/J941H-25C DN32/J941H-25C DN40/J941H-25C DN50/J941H-25C DN65/J941H-25C DN80/J941H-25C DN100/J941H-25C DN125/J941H-25C DN150/J941H-25C DN200/J941H-25C DN250/J941H-25C DN300/J941H-25C DN350/J941H-25C DN400/J941H-25C DN450/J941H-25C DN500/J941H-25C DN600/J941H-25C DN700/J941H-25C DN800/J941H-25C DN900/J941H-25C DN1000/J941H-40C DN32/J941H-40C DN40/J941H-40C DN50/J941H-40C DN65/J941H-40C DN80/J941H-40C DN100/J941H-40C DN125/J941H-40C DN150/J941H-40C DN200/J941H-40C DN250/J941H-40C DN300/J941H-40C DN350/J941H-40C DN400/J941H-40C DN450/J941H-40C DN500/J941H-40C DN600/J941H-40C DN700/J941H-40C DN800/J941H-40C DN900/J941H-40C DN1000/J941H-64C DN32/J941H-64C DN40/J941H-64C DN50/J941H-64C DN65/J941H-64C DN80/J941H-64C DN100/J941H-64C DN125/J941H-64C DN150/J941H-64C DN200/J941H-64C DN250/J941H-64C DN300/J941H-64C DN350/J941H-64C DN400/J941H-64C DN450/J941H-64C DN500/J941H-64C DN600/J941H-64C DN700/J941H-64C DN800/J941H-64C DN900/J941H-64C DN1000/J941H-100C DN32/J941H-100C DN40/J941H-100C DN50/J941H-100C DN65/J941H-100C DN80/J941H-100C DN100/J941H-100C DN125/J941H-100C DN150/J941H-100C DN200/J941H-100C DN250/J941H-100C DN300/J941H-100C DN350/J941H-100C DN400/J941H-100C DN450/J941H-100C DN500/J941H-100C DN600/J941H-100C DN700/J941H-100C DN800/J941H-100C DN900/J941H-100C DN1000

上海乾儀自控閥門(mén)有限公司

聯(lián) 系 人：羅秋云

銷售：

           021-61558922

傳    真：

郵 箱：lzj1668   :