... CE,ISO,API, ABS Structure:butterfly valve Cast iron rubber lined wafer type butterfly valvesize: 2''-48'';pressure: 150lb ... 4. self cleaning function Cast iron rubber lined wafer type butterfly valve feature: Design standard: API609 , BS5155 , MSS ... ASD / BS10D / BS10E / UNIInspection and test : API598 , ISO5208-1982Drving style : Lever , gear , actuator , pneumatic Materials---Body : Cast Iron , ...