... )Standard:GB,DIN,ISO,SMS The High Quality Sanitary Pneumatic Butterfly Valves have the Characteristics just as follows: Material:Carbon Steel,Stainless ... ,Oil,Neutral gases,liquids,Corrosive,Acidic SubstancesConnection:Welded,Tri-clamp,Wafer,Thread Pressure:1.6,2.5MPa Diameter:DN8-100mmSize Standard ...