... 2.Reasonable price to get the order 3.Professioal OEM Double Flange Butterfly Valve: SizeDN40 - DN1400Design StandardAPI 609End flangeEN1092 ,ANSI 125 ... Medium:Water, sewage,sea water, air, foodstuff, oil etc.Working Temperature:-10°C~150°COperator:Suitalbe for handles(dn50~300), gear ... standards of GB, ASME, ANSI, API, BS, DIN, JIS etc. double flanged rubber lined butterfly valve