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Help CenterJIS F7481 Marine Butterfly Valve DN50-DN300 for Ship Sewage Systems
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As a professional manufacturer specializing in marine fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our JIS F7481 Marine Butterfly Valve series, engineered specifically for the demanding environment of ship sewage systems. With our commitment to quality underscored by the ISO9001 certification, we design these valves to offer reliable, long-lasting performance, ensuring the safe and efficient management of wastewater on board vessels. Our valves are built to withstand corrosive media and harsh marine conditions, providing shipbuilders and shipowners with a critical component that combines durability with ease of operation.
The core value of our JIS F7481 Marine Butterfly Valves lies in their robust construction and precise adherence to international marine standards. They are engineered to deliver secure shut-off and smooth flow control in sewage pipelines, contributing to the overall environmental compliance and operational safety of maritime vessels. By choosing our products, you partner with a manufacturer that has been serving global markets since 2016, exporting to regions including North America, Europe, Southeast Asia, and Africa, with an annual export value demonstrating our growing international trust and capability.
Key Features & Technical Advantages:
- Standard-Compliant Design: Manufactured in strict compliance with the JIS F7481 standard, ensuring compatibility and reliability for marine applications worldwide.
- Corrosion-Resistant Materials: Available in a range of body materials such as cast iron, ductile iron, and stainless steel, with seat options like EPDM, NBR, or PTFE, selected for excellent resistance to sewage and seawater.
- Versatile Sizing: Covers a comprehensive range from DN50 to DN300, making it suitable for various pipeline diameters within ship sewage systems.
- Multiple Actuation Options: Can be equipped with manual lever, gear operator, or electric actuators, allowing for flexible integration based on the level of automation required.
- Compact & Lightweight: The wafer or lug design offers a space-saving profile and reduced weight compared to other valve types, which is crucial for shipboard installations.
- Low Maintenance & Easy Operation: Simple disc and seat design ensures easy maintenance, while the quarter-turn operation allows for quick opening and closing.
- Bubble-Tight Shut-off (Optional): With high-performance seat materials like PTFE, the valve can achieve bubble-tight shut-off, preventing leakage and odor escape.
Technical Specifications:
| Parameter | Details |
| Product Standard | JIS F7481 |
| Valve Type | Butterfly Valve |
| Size Range (Nominal Diameter) | DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 |
| Pressure Rating (JIS 10K/16K) | 10K (PN16) / 16K (PN25) typical |
| Connection Type | Wafer or Lug (Flange connection as per JIS B 2212/2213) |
| Body Material (Common) | Cast Iron (FC200), Ductile Iron (FCD450), Stainless Steel (CF8/CF8M) |
| Disc Material | Stainless Steel, Cast Iron with coating (Epoxy, Ni-plating) |
| Seat Material | EPDM, NBR, PTFE, or other materials upon request |
| Stem Material | Stainless Steel (SUS304, SUS316) |
| Operating Temperature | Depends on seat material (e.g., EPDM: -10°C to +120°C) |
| Actuation Method | Lever Handle, Gearbox, Electric Actuator, Pneumatic Actuator |
Benefits for Your Marine Projects:
- Enhanced System Reliability: The robust design minimizes failure risks in critical sewage handling systems, reducing downtime and maintenance costs.
- Compliance Assurance: Using JIS-standard valves helps ensure your vessel meets relevant classification society requirements for sewage systems.
- Operational Efficiency: Quick quarter-turn operation and various actuation options enable fast response and integration into automated control systems.
- Long Service Life: Corrosion-resistant materials and quality construction extend the valve's lifespan even in aggressive marine sewage environments.
- Global Supply Support: With shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we offer flexible logistics to major global markets.
Frequently Asked Questions (FAQ)
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Q: What does "JIS F7481" mean for this valve?
A: JIS F7481 is a Japanese Industrial Standard specifically for marine butterfly valves. It defines requirements for design, materials, dimensions, testing, and marking, ensuring the valve is suitable for marine applications, particularly in ship piping systems like sewage. -
Q: Can this valve be used for applications other than sewage on ships?
A: While designed and optimized for ship sewage systems, this JIS F7481 butterfly valve can also be suitable for other marine fluid services such as seawater cooling, ballast, bilge, or general service lines, provided the material compatibility and pressure rating are appropriate for the specific media. -
Q: What are the main differences between wafer and lug type connections?
A: A wafer-type valve is installed between two flanges using bolts that span the entire assembly. A lug-type valve has threaded inserts (lugs) on both sides, allowing it to be bolted directly to each flange independently. Lug types are often preferred for end-of-line applications or where pipeline support is needed. -
Q: How do I select the right seat material (EPDM, NBR, PTFE)?
A: The choice depends on the fluid temperature and chemical composition. EPDM is suitable for hot water and mild chemicals; NBR is good for oils and fuels; PTFE offers excellent chemical resistance and a wider temperature range. We can advise based on your specific sewage characteristics. -
Q: Are electric or pneumatic actuators available?
A: Yes. While the standard offering is manual operation (lever or gear), electric and pneumatic actuators are available as optional accessories. They can be configured for on/off or modulating control, integrating with your ship's automation system. -
Q: What is your quality control process?
A: Our manufacturing operates under an ISO9001 certified quality management system. Each valve undergoes rigorous inspection and testing, including shell tests, seat tests (for leakage), and operational checks, to ensure it meets the specified standards and performance criteria. -
Q: What is the typical lead time and packaging for export?
A: Lead time depends on order quantity and specification complexity, typically ranging from 15 to 45 days. Valves are packaged in wooden cases or cartons suitable for sea freight, with protective measures to prevent corrosion and damage during transit. -
Q: Do you provide technical support and documentation?
A: Absolutely. We provide detailed technical datasheets, installation manuals, and material certificates. Our engineering team is available to offer support for valve selection, installation guidance, and troubleshooting.
Shanghai Zhibang Valve Manufacture Co., Ltd. brings tangible credibility to every product. Our established history since 2016, combined with an annual export value reflecting consistent international demand, demonstrates our capability as a reliable supplier. Operating under an ISO9001 certified quality system, we ensure every JIS F7481 Marine Butterfly Valve that leaves our factory meets high standards of performance and durability.
Our extensive reach across North America, South America, Europe, Asia, Africa, and Oceania proves the global acceptance of our products. With strategic shipment ports facilitating efficient logistics, we are well-equipped to be your dependable partner for marine valve needs. This valve is more than a component; it's a commitment to the safety, efficiency, and environmental responsibility of your vessel's operations.
We invite shipyards, marine equipment distributors, and shipowners to experience the reliability of our marine butterfly valves. Contact us today to discuss your specific requirements, request a detailed quotation, or learn how our products can enhance your ship sewage systems.
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