... -1 series13/20Detail Image:Certificates:Brief Introduction:Butterfly valve is mainly consisted of body, stem, disc, ... together.Characteristics of Product:Flanged Butterfly Valve, Extension Rod Butterfly Valve: SizeDN50~DN2400Design StandardEN593End flangeEN 1092, ... , 420, 431SeatNBR, EPDMSuitable temperature-10°C~80°CSuitable mediumfresh water, sewage, sea water, food etc.Main Facilities:Assembling ...