ISO & PED certified, 1st China valve manufacturer, 2 year quality warranty, free replacement. Size: DN40 to DN1200Performance data Nominal ... mediaOperation methodsHandles, manual gear operator, electric or pneumatic actuatorMaterials of main parts DescriptionMaterialBodyCLASS B, GR. 65-45-12SeatNBR , EPDM,VITON, ... SteelBushingPTFE or BronzeRingNBRPinSS 416, SS316 U Section Wafer Type Butterfly Valve