Ductile Iron Butterfly Valve DN100 Price – First Choice for Municipal Water Supply
This article provides a comprehensive 2026 price reference and outlines the critical selection parameters for municipal water supply procurement.The main Butterfly Valve product names of China Butterfly Valve Network include:Electric Soft-sealed Flange Butterfly Valve,Electric Speed Control Butterfly Valve,Electric Vacuum Butterfly Valve,Electric Ventilation Butterfly Valve,Electric Serrate Regulate Butterfly Valve,Extended Hard-sealed Flange Butterfly Valve,Electric Desulfurization Wafer Butterfly Valve,Electric Desulfurization Flange Butterfly Valve,Fire Signal Butterfly Valve.
2026 Price Reference for Ductile Iron Butterfly Valve DN100
As of 2026, the market price of a ductile iron butterfly valve DN100 typically falls within the range of 200 to 600 RMB per unit (approximately $28 to $85 USD), depending on the brand, sealing material, and actuation type .
Economy lever-operated models with rubber seals are priced in the 200 to 350 RMB bracket. These basic configurations are suitable for general water applications where operating conditions are moderate .
Mid-to-high-end worm-gear operated models featuring EPDM or PTFE seals range from 400 to 600 RMB. The worm-gear operator provides smoother operation and self-locking capability, making it the recommended choice for DN100 valves in municipal service .
It is important to note that these reference prices apply to manual valves. For electric actuated versions, prices increase substantially, with some manufacturers listing DN100 ductile iron butterfly valves at approximately 2,500 RMB when equipped with electric actuators . Bulk purchases can further reduce unit prices, and factory-direct sourcing is recommended to ensure quality and competitive pricing .
Why Ductile Iron is the Material of Choice for Municipal Water Supply
Ductile iron butterfly valves offer several distinct advantages that make them the first choice for municipal water supply projects, surpassing traditional cast iron and even some steel alternatives.
Superior strength and fracture resistance is the most compelling advantage. Unlike traditional gray cast iron, which is brittle and prone to fracture under water hammer or ground settlement, ductile iron undergoes a spheroidizing treatment that gives it mechanical properties comparable to steel . Ductile iron has a higher yield strength (minimum 40k) compared to cast steel (36k), meaning it can withstand higher pressure loads without deformation .
Excellent corrosion resistance and longevity are critical for buried water pipelines expected to operate for decades. In most municipal applications involving water, brine, and steam, ductile iron butterfly valves demonstrate superior corrosion and oxidation resistance compared to cast steel alternatives . For drinking water service, high-quality manufacturers apply food-grade epoxy resin electrostatic coating to the internal surfaces. This smooth coating prevents contamination, resists biofilm adhesion, and ensures water quality meets potable standards .
Superior vibration damping is another key benefit. The spheroidal graphite microstructure of ductile iron provides better vibration absorption than cast steel, reducing stress on the valve and piping system during flow fluctuations .
Cost-effectiveness makes ductile iron particularly attractive for municipal budgets. Ductile iron butterfly valves are significantly more economical than stainless steel alternatives while delivering comparable strength for water applications. The material also offers higher casting efficiency and reduced machining costs compared to steel, further lowering the total cost of ownership .
Key Selection Parameters for Municipal Water Supply Procurement
Compact and lightweight design reduces installation costs and space requirements compared to gate valves or globe valves . The wafer-style butterfly valve installs between two Compare multiple quotes from established manufacturers– Engage directly with reputable ductile iron butterfly valve manufacturers or authorized distributors. Request detailed technical proposals and price quotations with full specifications.
The ductile iron butterfly valve DN100 is the established first choice for municipal water supply projects, offering the ideal combination of high strength, excellent corrosion resistance, cost-effectiveness, and reliable sealing performance. As of 2026, prices for manual models range from approximately 200 to 600 RMB, with electric actuated versions commanding higher prices . When selecting this valve, pay careful attention to the pressure rating (PN10-PN25), sealing material (EPDM is recommended for potable water), internal coating (epoxy or enamel), and applicable certifications. For the most competitive and accurate pricing, contact manufacturers directly with your complete technical specifications. Investing in correctly specified ductile iron butterfly valves is an investment in the long-term reliability, safety, and efficiency of municipal water supply infrastructure.
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