... working experience Size Range: DN150- DN1200 Certificate:API/ABS worm gear double flange butterfly valveRelevant StandardsGenerally Design: EN 598, BS ... Scope: -40- 200End Connection Option: FlangeStructure Character: Bi-Direction, Split Shaft, Rubber-LinedMaterialsBody: Cast Iron, Ductile Iron, WCB, CF8, CF8MDisc: ... FPMShaft: X20Cr13, S.S.304, S.S.316Coating: Epoxy ResinOperatorsWorm Gear, Leave