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Help CenterGear Operated Butterfly Valve for Marine Applications, Ductile Iron JIS F7480 DN200-DN500
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As a leading manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve is proud to present our specialized Gear Operated Butterfly Valve engineered specifically for demanding marine and offshore applications. Built to the rigorous JIS F7480 standard, this valve series in DN200 to DN500 sizes offers a reliable and robust solution for seawater cooling, ballast, firefighting, and other critical shipboard systems. Our focus on precision manufacturing and durable materials ensures optimal performance and longevity in corrosive saltwater environments, providing shipbuilders and marine engineers with a trusted component for their vital fluid control needs.
This marine-grade butterfly valve is designed to address the unique challenges of the maritime industry. The gear operator provides significant mechanical advantage, allowing for smooth and controlled actuation of larger diameter valves even under high differential pressures, which is essential for safe and efficient operation onboard vessels.
- Superior Corrosion Resistance: The valve body and disc are constructed from high-grade ductile iron, often with optional epoxy coating or other marine-grade finishes available upon request, to provide exceptional resistance to saltwater corrosion and extend service life.
- Robust Gear Operation: The enclosed weather-proof gearbox ensures reliable manual operation. The gear mechanism offers precise flow control and a clear visual indication of the valve position (open/close), enhancing operational safety.
- JIS F7480 Compliance: Manufactured in strict adherence to the Japanese Industrial Standard for Ship Valves, ensuring compatibility with international marine specifications and reliability for global maritime operations.
- Bubble-Tight Shut-off: Features a resilient seat (EPDM standard, with NBR or Viton options) that provides excellent sealing performance, ensuring leak-free operation essential for system integrity and environmental protection.
- Low Maintenance Design: The stem is sealed with multiple O-rings and bushings, minimizing maintenance requirements. The design allows for easy seat replacement without removing the valve body from the pipeline, reducing downtime and lifecycle costs.
Below is a summary of key technical specifications for the standard configuration:
| Parameter | Specification |
|---|---|
| Size Range (DN) | 200, 250, 300, 350, 400, 450, 500 |
| Pressure Rating (JIS 10K) | PN16 / 1.6 MPa |
| Body Material | Ductile Iron (GGG40) |
| Disc Material | Ductile Iron (Epoxy Coated) |
| Stem Material | Stainless Steel (SS420) |
| Standard Seat | EPDM (Suitable for seawater) |
| Operation | Manual Gear Operator with Position Indicator |
| Face-to-Face | Per JIS B 2032 / ISO 5752 |
The benefits for our clients are clear and measurable. By choosing our JIS F7480 valve, you gain a component that enhances system reliability, reduces the risk of costly leaks or failures at sea, and simplifies maintenance routines. The gear operation improves operator safety by reducing the physical effort required compared to lever-operated valves, especially for larger sizes. Furthermore, compliance with recognized marine standards facilitates smoother classification society approvals and integration into newbuild or retrofit projects worldwide.
Backed by our ISO9001 certification and nearly a decade of manufacturing expertise since 2016, Shanghai Zhibang Valve delivers products that meet exacting quality standards. Our annual export value reflects the trust placed in us by partners across North America, Europe, Southeast Asia, Africa, and beyond. We support this global reach with efficient logistics from major ports like Shanghai, Guangzhou, and Hong Kong. For your next marine project requiring dependable, specification-compliant fluid control, our Gear Operated Butterfly Valve offers a proven solution. Contact us today to discuss your specific requirements for DN200-DN500 applications and receive detailed technical support.
Frequently Asked Questions (FAQ):
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Q: Is this valve suitable for seawater applications?
A: Yes, it is specifically designed for marine use. The standard EPDM seat and coated ductile iron construction provide good resistance to seawater corrosion. For highly aggressive conditions, alternative seat materials like Viton or additional coatings can be specified. -
Q: What is the main advantage of a gear operator over a lever for this size range?
A: A gear operator provides a high mechanical advantage, making it possible to open and close large-diameter valves (DN200+) against significant water pressure with manageable effort, improving safety and control. -
Q: Can this valve be supplied with different end connections?
A: Absolutely. While commonly supplied as a wafer-type valve for installation between pipe flanges, lug-type versions are also available upon request, which allow for dead-end service or easier removal of downstream piping. -
Q: Are these valves certified by marine classification societies?
A: Our valves are manufactured to the JIS F7480 standard, which is widely recognized in the marine industry. Specific certification from societies like ABS, DNV, or LR can be arranged as a project-specific requirement. Please inquire for details. -
Q: What is the typical lead time for an order of DN300 valves?
A: Lead times vary based on order quantity and specific configuration. Standard models often have shorter lead times. We recommend contacting our sales team with your project timeline for an accurate delivery schedule. -
Q: Do you offer actuated versions of this valve?
A: Yes. While this product listing highlights the manual gear operation, this valve design is compatible with electric or pneumatic actuators. We can provide a complete actuated package tailored to your control system needs. -
Q: How does the JIS F7480 standard compare to other standards like API or ISO?
A: JIS F7480 is a Japanese standard specifically for ship valves, covering design, materials, and testing. It is comparable in intent to other marine standards and ensures the valve is fit for purpose in marine environments, with dimensions compatible with common flange standards. -
Q: What kind of warranty or after-sales support do you provide?
A: We stand behind the quality of our products. A standard warranty applies, and we offer comprehensive technical support. Spare parts like seal kits and seats are readily available to ensure long-term operational reliability.
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