The classification of butterfly pneumatic valve type

according to the national standard production pneumatic valve control points:
wafer butterfly valve pneumatic valve ( Rubber seal) （ In linear or single eccentric type) , wafer line with rubber butterfly valve, pneumatic valve, manual external regulation of clamp butterfly pneumatic valve, long series of wafer metal sealing butterfly valve, pneumatic valve, The double eccentric) , fluorine rubber lining wafer butterfly valve pneumatic valve ( In linear or single eccentric type) , this center line butterfly pneumatic valve, screw drive wafer butterfly valve pneumatic valve, pneumatic valve, worm gear, worm gear wafer center line butterfly valve drive external regulation wafer butterfly valve pneumatic valve, worm gear drive external regulation wafer butterfly valve pneumatic valve, pneumatic butterfly valve, pneumatic wafer butterfly valve, pneumatic external regulation wafer butterfly valve pneumatic valve, pneumatic wafer center line butterfly valve, electric pneumatic valve, electric transmission to adjust the wafer butterfly wafer center line butterfly valve pneumatic valve, electric pneumatic valve, wafer butterfly valve handle flange butterfly pneumatic valve, worm and worm wheel flange butterfly valve ( In linear or single eccentric type) , pneumatic flange butterfly valve ( In linear or single eccentric type) Pneumatic valve, electric flanged butterfly ( In linear or single eccentric type) , a short series of double eccentric flanged butterfly pneumatic valve ( Worm gear and worm) , a short series of double eccentric flanged butterfly pneumatic valve ( Pneumatic) , a short series of double eccentric flanged butterfly pneumatic valve ( Electric) , prevent sediment type pneumatic valve, ventilation regulating butterfly pneumatic butterfly valve ( A) Regulate the butterfly pneumatic valve, ventilation ( 2) Regulate the butterfly pneumatic valve, ventilation ( 3) 。
the pneumatic butterfly valve, according to the standard of foreign production points:
wafer butterfly valve pneumatic valve, convex and thin shape control pneumatic valve, pneumatic valve handle operation adjustment, worm gear drive control pneumatic valves, electric butterfly valve, worm gear drive flange metal seal butterfly pneumatic valve, worm gear wafer metal sealing butterfly valve, pneumatic valve.