Ductile Iron Valves

About Ductile Iron Valves

What Is Ductile Iron and Why Is It Used in Valves?

Ductile iron, also known as nodular cast iron or spheroidal graphite iron, is a type of cast iron that has been treated to improve its strength, toughness, and flexibility. It contains nodules of graphite rather than flakes (as found in standard cast iron), giving it enhanced mechanical properties. Ductile iron is commonly used for valves that require higher pressure ratings and greater impact resistance than traditional cast iron can offer.

Why Ductile Iron for Valves?

• Superior Strength and Ductility: Can handle higher pressure and stress without cracking.
• Good Corrosion Resistance: Especially when epoxy-coated for water and wastewater applications.
• Cost-Effective Alternative to Steel: Offers steel-like performance at a lower cost.
• Impact and Fatigue Resistant: Performs reliably in systems with pressure surges or vibrations.

Common Applications of Ductile Iron Valves

• Water and Wastewater Systems: Widely used in municipal waterworks and sewer lines.
• Fire Protection Systems: Suitable for hydrants and fire mains due to pressure durability.
• Irrigation Networks: Withstands fluctuating pressures in agricultural systems.
• Industrial Facilities: For handling air, steam, and non-corrosive fluids.
• HVAC Systems: In cooling towers, chiller loops, and heating systems.