... .10Brief Introduction:Butterfly valve is mainly consisted of body, stem, disc, seat and driver(lever, gearbox, pneumatic and ... and controlling flow of valve are made by turning stem and disc together.Characteristics of Product:Typical Application: ... industry, Food, BeverageDetail Specification:Extension bar butterfly valve, long stem extension bar wafer butterfly valve: SizeDN40-DN1200End flangeANSI B ...