... : DN40-1400 Nominal Pressure:PN10/PN16 Double Flange Butterfly Valve:SizeDN40 - DN1400Design StandardAPI 609End flangeEN1092 ,ANSI 125/150# , ... water source projects, urban water supply and drainage, sewage treatment, electric power, petroleum, petrochemical , heat supply,shipbuilding, medicine and ... and oil. Suitable for handles (DN50~300), gear operators,electric and pneumatic control actuators.