氣動襯氟蝶閥，屬于對(duì)夾/法蘭(lán)式襯氟蝶(dié)閥系列；它由氣動執 行機構和襯氟蝶閥組成，閥體部分可與氣動、電動(dòng)執行機構選配 組合，組成(chéng)各種不同類型的蝶(dié)閥品種規格。該産品按其(qí)襯(chèn)裡材質 分為全襯(chèn)氟蝶閥和半襯氟蝶(dié)閥。全襯氟蝶閥由(yóu)于襯氟蝶閥閥體内 腔均有抗腐蝕的(de)氟塑料(PTFE/FEP/PFA) 制成襯裡(lǐ)， 同時對(duì)蝶闆 和閥杆裡進行(háng)包襯氟塑料，并在閥基面(miàn)内設有矽橡膠襯墊，用來調 節閥座(zuò)基面預緊，以達到與蝶闆(pǎn)密封性能(néng)。閥體(tǐ)采用分離式，閥軸 兩端的密封由蝶闆(pǎn)與(yǔ)閥座之間的旋轉基面靠氟橡膠圈(quān)來控制，從 而使(shǐ)閥軸不(bú)與腔内介質接觸，保證了密封無洩漏。

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.