Coating: Advanced epoxy electrostatic coating (sandblasting + high-adhesion) guarantees 10-year integrity, boosting corrosion resistance by 30%+ vs. standard carbon steel
Pressure-Resistant Design: Thickened body meets global standards, precision-cast flow channels cut 15% resistance
Zero-Leakage Assurance: Full-range pressure sealing tests (covering both gas and liquid sealing detection) ensure zero leakage, even under static pressure
Design and Manufacture: ASME B16.34; ASME VIII; API 609:AS2129: JISB2220
Side Flange Standards: ANSI 125LB/ 150LB; ASME; AS-D/E; BS; DIN; EN PN6/ PN10/ PN16/ PN25; GB; GOST; HG/T; JIS 5K/ 10K/ 16K
Face-to-Face Dimension: ISO 5752; MSS SP-68; ASME B16.10; EN 558-1; API 609
Testing Standards: API 598; EN 12266-1; ISO 5208; BS 6755-1
Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3；
Technical description
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Q&A
Specification of the Valve |
|
|---|---|
| Type of Connection | Wafer |
| Size |
DN32~DN1200 (1 1/4~48in) |
| Pressure |
0bar~18bar (0mpa~1.8mpa) |
| Testing Pressure | 256psi |
| Medium | Water, Sewage, Air, Neutral Liquids |
| Medium Temperature | -25~180℃ |
Material of the Valve |
|
|---|---|
| Body | Ductile Iron: GGG50/ GGG40 |
| Disc |
Ductile Iron (Nickel-Plated): ASTM A536 65-45-12 + Ni Duplex, Bronze & Special Alloys: CD3MN (Duplex 2205), CE3MN (Super Duplex 2507), Aluminum Bronze (C95400/C95800), CW6MC (Hastelloy C-276 eq.) |
| Stem |
Carbon Steel: AISI 1045 High-Strength & Corrosion Resistant: 17-4PH (SS630), Duplex 2205 (S32205), Super Duplex 2507 (S32750), Monel K500, Hastelloy C-276 |
| Seat |
Elastomers: EPDM, HTEPDM, NBR (Nitrile Rubber / Buna-N), SIL (VMQ), FKM (VITON™), HYPALON™ |
| Coating |
System: Fusion Bonded Epoxy (FBE) |
Thanks to its robust construction and cost-effectiveness, the ductile iron wafer check valve is a versatile solution for preventing backflow in a wide array of applications. Below are some of the key industries where its performance is mission-critical.
A cornerstone of public works, these valves are vital in water supply networks, pumping stations, and wastewater treatment plants. As a specialized butterfly check valve factory, we engineer them to prevent backflow and mitigate water hammer, protecting critical pumps and pipelines.
In high-rise buildings, our valves ensure the one-way flow of water in plumbing, chilled water, and cooling systems. The reliable performance of each valve from our butterfly check valve factory is crucial for efficient climate control and maintaining water pressure integrity throughout the structure.
For life-safety applications, reliability is non-negotiable. Installed at fire pump outlets, our ductile iron check valves prevent pressure loss by stopping backflow, ensuring the system is primed and ready. Our butterfly check valve factory is committed to manufacturing valves that meet these stringent safety standards.
The valve's durability makes it ideal for general industrial water lines, including process cooling and utility water systems in sectors like paper and mining. Our butterfly check valve factory produces cost-effective solutions that provide dependable backflow prevention for non-corrosive fluids.
Essential for managing water resources, these valves are used in irrigation pump stations and distribution networks to prevent water from flowing backward. Products from our butterfly check valve factory help protect pumping equipment and conserve water, supporting efficient agricultural operations.
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This valve is ideal for Water Treatment, Municipal Engineering, HVAC, Fire Protection, and General Industrial applications. It is designed for media like water (clean, raw, sewage), air, and other neutral, non-corrosive liquids. It is not recommended for strong acids/alkalis or high-temperature steam.
Ductile iron offers significantly higher tensile strength and ductility compared to standard cast iron. This means it's far more resistant to shock, pressure surges, and fatigue, making it a safer and more durable long-term investment for critical systems.
Our dual-disc design is spring-loaded, which ensures a rapid, non-slam closure the instant flow stops. This quick action prevents significant flow reversal, which is the primary cause of damaging water hammer, thereby protecting your pumps and piping system.
Yes. The valve is versatile and can be installed in both horizontal and vertical pipelines. For vertical installation, the flow must be upward. For horizontal lines, we recommend positioning the valve with the hinge pin in a vertical orientation for optimal performance and longevity.
As a vertically integrated butterfly check valve factory, we control the entire process—from casting and machining to final assembly. With 20 years of market-proven reliability, we ensure every valve meets the highest standards for performance and durability, offering you factory-direct quality and accountability.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
Technical Support: Magic Lamp - Website
