氣動襯氟蝶閥(fá)，屬于(yú)對(duì)夾/法蘭式襯氟蝶(dié)閥系列；它由氣動執(zhí) 行機構和襯氟(fú)蝶閥組成，閥體部分可與氣動、電動執行機構(gòu)選配 組合，組成(chéng)各種不同類(lèi)型(xíng)的蝶閥品(pǐn)種規(guī)格。該産品按其(qí)襯裡材質(zhì) 分為(wéi)全襯氟蝶閥和(hé)半襯氟(fú)蝶閥。全(quán)襯氟蝶閥由于(yú)襯氟蝶閥(fá)閥體内 腔均有(yǒu)抗腐(fǔ)蝕的氟塑(sù)料(ptfe/fep/pfa) 制(zhì)成襯(chèn)裡， 同(tóng)時對(duì)蝶闆 和閥杆裡(lǐ)進行(háng)包襯氟塑(sù)料，并(bìng)在閥(fá)基面(miàn)内設有(yǒu)矽橡膠(jiāo)襯墊(niàn)，用來調 節(jiē)閥座(zuò)基面預緊(jǐn)，以達到與(yǔ)蝶闆密封性能。閥體(tǐ)采用分(fèn)離(lí)式，閥(fá)軸 兩端的密封由蝶闆與閥座之間(jiān)的(de)旋轉基(jī)面靠氟橡(xiàng)膠圈(quān)來控制，從 而使(shǐ)閥軸不(bú)與腔(qiāng)内(nèi)介質(zhì)接觸，保證(zhèng)了密封無洩漏(lòu)。

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.