Combining excellent corrosion resistance with high tensile strength, these valves deliver reliable performance and long service life in demanding water infrastructure applications. This article provides pricing information and key selection parameters for DN150 ductile iron gate valves.The main gate valve product names of China gate valve Network include:API Electric Lug&wafer Knife-shaped Gate Valve,API Bevel Gear Lug&wafer Knife-shaped Gate Valve,API Pneumatic Lug&wafer Knife-shaped Gate Valve,Z41H Manual Flange Cast Iron Gate Valve,ZT9928 Manual Slurry Knife-shaped Gate Valve,Z40/540/940H/Y Cast Steel Pressure Self-tight Gate Valve.

Price Reference for DN150 Ductile Iron Gate Valve

Ductile iron gate valve prices vary based on design, pressure rating, and certification:

Standard ductile iron gate valves with PN10/PN16 ratings are available from approximately 99 to 500 CNY for economy-grade models, depending on configuration and order quantity .

Premium ductile iron gate valves from established manufacturers with EN GJS-500-7 ductile iron bodies, AISI 304 stainless steel seats, and AISI 420 stems are available at competitive pricing from European and Chinese suppliers . For comparison, a European-brand DN150 ductile iron gate valve is priced at approximately 499 EUR (about 3,800 CNY) . While more expensive than domestic economy models, it offers premium quality and extended service life.

Factory-direct Chinese suppliers offer pricing typically ranging from 300 to 445 CNY for DN150 ductile iron gate valves, with bulk orders qualifying for additional discounts .

Why Ductile Iron for Municipal Water Supply

Ductile iron gate valves offer significant advantages over traditional cast iron for water supply applications:

Superior Strength: Ductile iron (EN-GJS-500-7/GGG50) provides higher tensile strength and impact resistance than grey cast iron, making it ideal for buried and underground installations where ground settlement and vibration are concerns .

Corrosion Resistance: The material offers excellent resistance to rust and corrosion in water environments, ensuring long service life in municipal water networks .

Leak-Tight Sealing: Modern ductile iron gate valves achieve leakage rate B per EN 12266-1 standards, with maximum water leakage limited to 1.50 mm³/s at 20°C . This tight shutoff is essential for water conservation and system efficiency.

Technical Specifications

Pressure and Temperature: PN10 (1.0MPa) to PN16 (1.6MPa) ratings with temperature ranges from -10°C to 120°C . Class 150 equivalent available for international applications .

Materials: Valve body from ductile iron GJS-500-7/GGG50. Seats from stainless steel AISI 304/420. Fully encapsulated rubber-coated disc available for resilient seated designs .

Design Features: Rising stem or non-rising stem configurations available. Full bore for minimal pressure drop. Flanged ends per EN 1092-2 or ANSI standards. Bi-directional sealing .

Applications: Potable water distribution, wastewater systems, stormwater drainage, fire protection, and irrigation .

Selection Considerations

When selecting a DN150 ductile iron gate valve for municipal water supply, verify pressure rating matches system requirements (PN10 for standard networks, PN16 for higher pressure zones). For buried applications, choose non-rising stem (NRS) design with corrosion protection. Confirm flange standard compatibility (EN, ANSI, or GB). Consider resilient seated designs for the tightest shutoff in potable water applications.

Summary

Ductile Iron Gate Valve DN150 is the preferred choice for municipal water supply with prices starting from approximately 100 CNY for economy models to premium European brands at around 3,800 CNY. The combination of high strength, corrosion resistance, and reliable sealing makes it ideal for water infrastructure projects. For critical municipal applications, consulting with qualified valve manufacturers who can provide certified material test reports is recommended.

Do you still need to know or purchase the following gate valve products: