High vacuum butterfly valve high vacuum butterfly valve is to change the direction of gas through the solenoid valve to control the implementation of cylinder-driven butterfly valve for opening and closing movement. GIQ series high-vacuum butterfly valve for high vacuum system is used to connect or cut off the air flow in the vacuum pipe function. Suitable medium for pure air and non-corrosive gases. Pneumatic high vacuum butterfly valve is powered by compressed air. Pneumatic device to change the direction of the air line, the implementation of the cylinder push the butterfly valve for opening and closing movement. Pneumatic high vacuum butterfly valve optional feedback device and electrical valve positioner. According to the media pressure vacuum valve can be divided into low vacuum valve: vacuum range of low vacuum 105 to 10-2Pa (760 ~ 10 Torr) high vacuum valve: vacuum range of high vacuum 105 to 10 ~ 10-4Pa (760 ~ 10 -6 Torr) ultra-high vacuum valve: vacuum range of ultra-high vacuum 10 to 10-7Pa (760 ~ 10-99 high vacuum butterfly valve implementation of the standard 1. Design, manufacture in accordance with the JB / T4079-1991 standards; 2. Test And test in accordance with JB / T6446-1992 standard execution; 3. End flange size in line with JB919, GB / T6070 standard implementation. High vacuum valve parts of the main components of the material Body, butterfly plate: carbon steel (nickel), stainless steel components: 13Cr , Stainless steel disc Seal: Nitrile rubber, Viton Filling: NBR high vacuum butterfly valve The main technical performance