Ductile Iron Butterfly Valve Compliant With DIN 3202 Standard, Gearbox Actuator Compatible
Product Spotlights
As a specialized manufacturer with a strong commitment to quality and global standards, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium Ductile Iron Butterfly Valve. Engineered in strict compliance with the DIN 3202 standard and designed for seamless integration with gearbox actuators, this valve represents a reliable and efficient solution for a wide array of industrial fluid control applications. Since our establishment in 2016, we have focused on delivering robust valve technology that meets the rigorous demands of international markets, from North America and Europe to Southeast Asia and beyond. This particular valve is a testament to our dedication, combining durable construction, precise engineering, and versatile operation to ensure optimal performance and long service life in your piping systems.
Our Ductile Iron Butterfly Valve is engineered for superior performance. The key to its reliability lies in the material selection and precise manufacturing. The valve body and disc are constructed from high-grade ductile iron, offering an excellent balance of strength, toughness, and corrosion resistance, significantly outperforming standard gray iron. The disc is often coated with nickel plating for enhanced surface hardness and improved corrosion protection. The valve is designed to the DIN 3202 F1 standard, ensuring dimensional interchangeability, proper flange facing, and reliable sealing performance within defined pressure classes. This compliance guarantees easy installation and replacement within systems built to European and international specifications.
A core feature of this valve is its ready compatibility with gearbox actuators. The square drive at the top of the stem is standardized to accept a wide range of manual gear operators, providing significant mechanical advantage for easier operation, especially in larger sizes or higher-pressure applications. This design also allows for future automation, as the gearbox can be easily replaced with pneumatic or electric actuators without modifying the valve body. The sealing system is critical, and we offer various elastomer seat materials like EPDM for general water and mild chemicals, NBR for oils and fuels, and PTFE for high-temperature or aggressive chemical services, allowing customization for specific media.
Key Technical Specifications & Advantages:
- Robust Construction: Ductile iron body provides high tensile strength and impact resistance, reducing the risk of cracking compared to cast iron.
- Standardized Design: Full compliance with DIN 3202 ensures global acceptance, simplifies procurement of spares, and guarantees fit-for-purpose performance.
- Operational Versatility: The standardized gearbox interface allows for manual operation with a gear reducer for torque multiplication or easy upgrade to automated actuation.
- Bidirectional Sealing: The resilient seat design ensures tight shut-off in both flow directions, suitable for complex system layouts.
- Low Maintenance: Simple design with minimal moving parts translates to reduced maintenance requirements and lower lifetime costs.
- Compact & Lightweight: Compared to gate or globe valves of similar diameter, the butterfly valve design offers a space-saving and weight-saving advantage.
The benefits for your operation are clear. You gain a valve that is easy to install and integrate into existing DIN-standard systems. The gear operation reduces operator effort and increases safety. The material and seat options provide flexibility to handle water, wastewater, air, gases, and many industrial fluids reliably. Ultimately, this leads to improved system uptime, reduced operational costs, and enhanced process control.
| Parameter | Specification / Option |
| Size Range (DN) | DN50 to DN600 (2" to 24") |
| Pressure Rating | PN10, PN16 |
| Body Material | Ductile Iron (EN-GJS-500-7) |
| Stem Material | Stainless Steel (1.4021/420) |
| Disc Material | Ductile Iron with Ni-plating or epoxy coating |
| Seat Material | EPDM, NBR, PTFE, Silicone (customizable) |
| Operation | Manual Lever, Manual Gear, Actuator-ready |
| Temperature Range (with EPDM seat) | -20°C to +120°C |
| Flange Standard | DIN EN 1092-1 (PN10/16), ASME B16.5 optional |
| Face-to-Face | Per DIN 3202 F1 |
Frequently Asked Questions (FAQ)
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Q: What is the main advantage of using a ductile iron body instead of cast iron?
A: Ductile iron has superior mechanical properties, including higher tensile strength and much greater impact resistance and elongation. This makes the valve less prone to brittle fracture under stress or water hammer conditions, offering increased safety and durability. -
Q: Does 'Gearbox Actuator Compatible' mean the valve comes with a gearbox?
A: The valve is designed and manufactured with a standardized stem top ready to accept a gearbox. The gear operator itself can be supplied as part of the valve package or sourced separately. We offer both lever-operated and gear-operated versions. -
Q: Can this DIN 3202 valve be used with ANSI flanges?
A: While designed for DIN/EN flanges, many sizes have comparable pressure ratings and bolt circle diameters to ANSI Class 150 flanges. It is crucial to check the specific flange dimensions for your application. We can also provide valves with ANSI standard flanges upon request. -
Q: What media is this valve suitable for?
A: With the appropriate seat material selection, it is suitable for a wide range: water, seawater (with suitable coating), air, gases, steam (limited), oils, fuels, and many mild chemical solutions. Always confirm chemical compatibility of the seat material with your specific media. -
Q: What is the expected service life of the valve seat?
A: Seat life depends heavily on operating conditions: cycle frequency, pressure, temperature, and media abrasiveness/corrosiveness. Under standard water service conditions, EPDM seats can last for several years and thousands of cycles. The seat is a replaceable component. -
Q: Is the valve suitable for throttling (flow control) applications?
A: While primarily designed for on/off service, resilient-seated butterfly valves can be used for moderate throttling. For precise control, especially over an extended period, a characterized disc or a different valve type like a V-port ball valve may be more suitable. -
Q: Do you provide certifications with the valve?
A: Our manufacturing facility is certified to ISO9001 for quality management. We can provide material test reports (MTRs) for critical components like the ductile iron body upon request. Product-specific certifications like CE marking can be discussed based on project requirements. -
Q: What is your lead time and packaging for export?
A: Standard sizes are typically available from stock or have short production lead times. Valves are packaged in wooden cases or plywood boxes suitable for sea freight, with protective coatings to prevent corrosion during transit. We ship from major ports like Shanghai, Guangzhou, and Hong Kong.
Backed by our ISO9001-certified manufacturing processes and a proven track record of exporting to diverse markets across North America, Europe, Asia, and Africa, Shanghai Zhibang Valve stands as a reliable partner for your fluid control needs. Our annual export volume reflects the consistent trust placed in our products by international clients. This Ductile Iron Butterfly Valve embodies our commitment to delivering standardized, durable, and high-value components that integrate seamlessly into global industrial infrastructure. For a valve solution that combines robust DIN-standard engineering with the operational flexibility of gearbox compatibility, contact us today to discuss your specifications, request a quotation, or learn more about our full product range.
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