三偏心氣動蝶閥的概述:
本閥采用三偏心密封結(jié)構(gòu)，閥座與蝶板幾乎無磨損，具有越觀越緊的密封功能。2、密封圈選用不銹鋼制作，具有金屬硬密封和彈性密封的雙重優(yōu)點(diǎn)，無論在低溫和高溫的情況下，均具有優(yōu)良的密封性能,具有耐腐蝕,使用壽命長等特點(diǎn)。3、碟板密封面采用堆焊鈷基硬質(zhì)合金，密封面耐磨損，使用壽命長．4、大規(guī)格蝶板采用絎架結(jié)構(gòu)，強(qiáng)度高，過流面積大，流阻小。5、本閥具有雙向密封功能，安裝時不受介質(zhì)流向的限制，也不受空間位置的影響，可在任何方向安裝。6、驅(qū)動裝置可以多工位（旋轉(zhuǎn)90°或180°）安裝，便于用戶使用。
三偏心氣動蝶閥主要技術(shù)參數(shù)：
公稱通經(jīng)DN（mm） | 50～2000 |
公稱藥理PN（MPa） | 0.6 | 1.0 | 1.6 | 2.5 |
密封試驗(yàn)（MPa） | 0.66 | 1.1 | 1.76 | 2.75 |
強(qiáng)度試驗(yàn)（MPa） | 0.9 | 1.5 | 2.4 | 3.75 |
適用溫度 | 碳鋼：-29℃～425℃ 不銹鋼：-40℃～650℃ |
適用介質(zhì) | 水、空氣、天然氣、油品及弱腐蝕性流體 |
泄漏率 | 符合GB/T13927-92標(biāo)準(zhǔn) |
驅(qū)動方式 | 蝸輪傳動、電動、氣動、液動 |
三偏心氣動蝶閥主要零部件材料：
零件名稱 | 材料 |
閥體 | 鑄鐵、鑄鋼、不銹鋼、鉻鉬鋼、合金鋼 |
蝶板 | 鑄鋼、合金鋼（鍍硬鉻）、不銹鋼、鉻鉬鋼 |
密封圈 | 不銹鋼、聚內(nèi)脂、抗磨材料 |
閥桿 | 2Cr13、1Cr13不銹鋼、鉻鉬鋼 |
填料 | 柔性石墨 |
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