... AS 21294)F/F: ANSI B 16.10Brief Introduction:Butterfly valve is mainly consisted of body, stem, disc, seat and ... ) and so on. On off and controlling flow of valve are made by turning stem and disc together.Characteristics of ... making industry, Food, BeverageDetail Specification:Extension bar butterfly valve, long stem extension bar wafer butterfly valve: SizeDN40-DN1200End flangeANSI B 16.1, EN ...