結(jié)構(gòu)特點：

進口承插焊鍛鋼截止閥有三種閥蓋設(shè)計形式。*種是螺栓式閥蓋，按這種設(shè)計形式設(shè)計的閥門，其閥體與閥蓋用螺栓螺母連接，纏繞式墊片 (316夾柔性石墨制造)密封?？蛻粲刑厥庖髸r也可采用金屬環(huán)連接。第二種設(shè)計形式是焊接式閥蓋，按這種設(shè)計形式的閥門，其閥體與閥蓋用螺紋連接，全焊密封?？蛻粲刑厥庖髸r也可采用全焊接連接。第三種是壓力自緊式閥蓋，按這種設(shè)計形式設(shè)計的閥門，其閥體與閥蓋用螺紋連接，內(nèi)壓自密封環(huán)密封。

1.結(jié)構(gòu)簡單，維修比較方便。

2.工作行程小，啟閉時間短。

3. 密封性好，密封面間磨擦力小，壽命較長。

規(guī)范標準：

公稱壓力：PN1.0-16.0MPa、ANSI CLASS 150-900、JIS10-20K

公稱通徑：DN10～500、NPS 1/2 ～36"

連接方式：法蘭、對焊、螺紋等

適用溫度：-196℃～700℃

閥體材料：WCB、ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti、CF8(304)、CF3(304L)、CF8M(316)、CF3M(316L)、Ti。

選用不同的材質(zhì)，可分別適用于水、蒸汽、油品、硝酸、醋酸、氧化性介質(zhì)、尿素等多種介質(zhì)。

驅(qū)動方式：手動、傘齒輪傳動、氣動、電動、液動、氣液聯(lián)動、電液聯(lián)動 

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