... scars 3.Fast Delivery 4.Supply OEM/ODM Butterfly Valve of Rubber Seal : SizeDN40 - DN1400Design StandardAPI 609End flangeEN1092 ,ANSI ... actrators.Products;We can produce butterfly valves, check valves, gate valves and so on with the materials of ductile iron, carbon steel, stainless ... products are designed and manufactured in accordance with the standards of GB, ASME, ANSI, API, BS, DIN, JIS etc. ...