氣動襯氟蝶閥，屬于◊對◊夾/法蘭式襯氟蝶閥系列；它由氣動▾執▾ 行機構(Gòu)和襯[Chèn]氟蝶閥組成，閥體部分可與(Yǔ)氣動、電動執行機構(Gòu)選配 組[Zǔ]合，組成各種不同類型的蝶閥(Fá)品種規格。該[Gāi]産▿品▿按其[Qí]襯▽裡▽材[Cái]質 分為全襯氟蝶閥∇和∇[Hé]半襯氟蝶◇閥◇。全襯氟蝶閥由于襯氟◊蝶◊(Dié)閥閥體内 ▾腔▾均有(Yǒu)抗腐[Fǔ]蝕的氟塑料(PTFE/FEP/PFA) ◈制◈成襯裡， 同時對蝶闆 和閥杆裡[Lǐ]進▽行▽包襯氟塑[Sù]料，并在閥基面内設有矽橡膠(Jiāo)襯▾墊▾，用來調 節閥座基[Jī]面(Miàn)預緊，以達到與[Yǔ]蝶闆[Pǎn]密封性能。閥◈體◈采用分[Fèn]離式，◈閥◈軸 兩端的密封(Fēng)由蝶闆與閥座之間的旋轉基面靠氟橡膠圈來控[Kòng]制，從 而◆使◆[Shǐ]閥⋄軸⋄不與腔内介質接觸，保證[Zhèng]了密封無洩◆漏◆。

Pneumatic actuator control butterfly valve is YFM patent product， which belong to D671waferandD 641 flange type lined butterfly valve series， consist of pneumatic actuator and lined butterfly valve. These valves are divided into fully lined butterfly valve and half lined butterfly valve according to different lining ways.Fully lined butterfly refers to the PTFE/PFA/FEP seat and disc lined with PTFE/PFA/FEP. There is silicon pad to adjust pre-tighten for keeping the best sealing. valve body is split.The sealing of axis end is controlled by Viton which locate between disc and seat， so that the axis is out of touch medium to ensure the sealing without any leakage.