... .0~PN4.0 Flange Worm Gear metal/resilient seal eccentric butterfly valveRelevant StandardsDesign and Manufacture: EN 598 ... API 598Marking: API 609Technical DataFlange Worm Gear metal/resilient seal eccentric butterfly valveSize Range: 2"- 64" / DN50- ... Options: FlangeStructure: Laminated Seat, Single Direction, Split Shaft, Triple EccentricMaterialsBody: Cast Iron, WCB, CF8, CF8MDisc: Ductile Iron, ...