Ductile iron is a modern iron alloy that is made with nodule-shaped graphite. This gives the material excellent ductility, so it will not necessarily break when bent. Ductile iron has excellent corrosion resistance, tensile strength, and yield strength. The temperature limit is 1350F (730C). When it comes to pressure, ductile iron valves also use pressure classes: 150 and 300.
At Valve Warehouse Australia, we supply ductile iron butterfly valves, ductile iron check valves, ductile iron valve extension.