... Material: Cast Iron, Ductile Iron, SS, WCB Certification: ISO, CE Butterfly Valves Wafer Type Two Shaft, Disc Without Pin ISO9001 certifiedCE approvalAWWA ... 6. Actuator: Lever, Gear, Penumatic and Electric ActuatorMedium: Fresh water, sewage, sea water, air, vapour, acid, alkalis and so on.For catalog ...