氣動三偏(piān)心硬(yìng)密封(fēng)蝶閥是在二偏(piān)心硬密封(fēng)蝶閥基礎上生成一(yī) 個(gè)角度(密封面為斜錐面)，從而形成三偏心(xīn)硬密封蝶閥。該結(jié)構 在啟閉過程中無機械磨損和擦傷，其關閉力矩小、切斷性能好、 使(shǐ)用(yòng)壽命長，同時具有調節和切斷(duàn)兩種功能。 本系列産品廣泛應用于石油、化工、電力、冶金、環保、輕 紡、造紙等工業部門的自動(dòng)化控制系統中。适用(yòng)于液(yè)體、氣體、 煤氣、天然氣(qì)、蒸汽等介(jiè)質進行截止或調節流量控制。 

The pneumatic tri-eccentric hard seal butterfly valve is based on the two-eccentric hard seal butterfly valve to generate an angle(the sealing surface is an inclined cone) ， thus forming the tri-eccentric hard seal butterfly valve.The structure has no mechanical wear and scratch in the process of opening and closing， small closing torque， good cutting performance and long service life， as well as has two functions of adjustment and cutting. This series of products are widely used in the automatic control system of petroleum， chemical industry， electric power， metallurgy， environmental protection， light textile， papermaking and other industrial sectors. In addition， it's suitable for liquid， gas， coal gas， natural gas and steam to cut of for regulate flowcontrol.