氣動襯氟蝶閥，屬于(yú)對夾(jiá)/法蘭式襯氟蝶閥系列；它由氣(qì)動執(zhí) 行機構和襯氟蝶閥(fá)組(zǔ)成(chéng)，閥體(tǐ)部分(fèn)可與(yǔ)氣動(dòng)、電動(dòng)執行機構(gòu)選(xuǎn)配 組合，組成(chéng)各種不(bú)同類型的蝶閥品種規(guī)格。該産(chǎn)品按其(qí)襯裡(lǐ)材質 分為全襯氟蝶(dié)閥和(hé)半襯(chèn)氟蝶(dié)閥。全(quán)襯氟(fú)蝶閥(fá)由于(yú)襯氟蝶(dié)閥(fá)閥體(tǐ)内 腔(qiāng)均有抗腐(fǔ)蝕的(de)氟塑料(ptfe/fep/pfa) 制(zhì)成襯裡， 同時對(duì)蝶闆 和(hé)閥(fá)杆裡進行(háng)包襯(chèn)氟塑(sù)料，并在閥基面(miàn)内設有矽橡膠(jiāo)襯墊，用來(lái)調 節閥座基面預緊(jǐn)，以達到與蝶闆密封性能(néng)。閥體(tǐ)采用分離式，閥(fá)軸 兩(liǎng)端的密封(fēng)由蝶闆(pǎn)與(yǔ)閥座(zuò)之間的(de)旋轉基(jī)面靠(kào)氟(fú)橡(xiàng)膠圈(quān)來控制(zhì)，從 而使(shǐ)閥軸不(bú)與腔内介質接觸(chù)，保證(zhèng)了密封(fēng)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.