... series13/20Detail Image:Certificates:Brief Introduction:Butterfly valve is mainly consisted of body, stem, disc, seat and driver(lever ... making industry, Food, Beverage.Product Information:Flanged butterfly valve, extension road butterfly valve: SizeDN50~DN2400Design StandardEN593End flangeEN 1092, ANSI B16. ... A536 65-45-12Stem304 416 420 431SeatNBR, EPDM,Series 20 BodyCI, DI, WCBDiscDI, ALB, CF8M, 1 ...