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Help CenterCustom JIS F7481 Marine Butterfly Valve OEM for Shipboard Seawater and Ballast Systems
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a professional manufacturer specializing in marine valves. With over US$1 million to US$1.5 million in annual exports and ISO9001 certification, we pride ourselves on delivering reliable, custom-engineered solutions for shipboard seawater and ballast systems. Our Custom JIS F7481 Marine Butterfly Valve is designed to meet the rigorous demands of marine environments, offering exceptional corrosion resistance and precise flow control. By choosing our OEM service, you get a valve tailored to your exact specifications, ensuring seamless integration into your existing systems.
This valve is manufactured strictly in accordance with the Japanese Industrial Standard JIS F7481, guaranteeing interchangeability and compatibility with other JIS-compliant components. It is specifically engineered for seawater, ballast water, and cooling water applications on ships, where durability under harsh conditions is paramount. The butterfly valve features a compact design, lightweight structure, and quick quarter-turn operation, making it ideal for space-constrained installations.
Key Features and Technical Specifications:
- Robust Materials: Available in ductile iron or stainless steel body, with aluminum bronze or stainless steel disc to resist saltwater corrosion. Seat options include EPDM, PTFE, or Nitrile rubber for enhanced sealing performance.
- Pressure & Temperature Range: Rated for PN10/PN16 or JIS 10K working pressure. Operating temperature: -20°C to +120°C depending on seat material.
- Bi-directional Sealing: Designed for bubble-tight shut-off in both flow directions, meeting stringent marine industry leakage requirements.
- Full Customization: OEM service includes custom flange drilling pattern (JIS, ANSI, DIN), stem extension, gearbox or actuator mounting, special coatings, and unique packaging.
- Easy Maintenance: The valve’s top-entry design allows in-line repair without removing the valve from the pipeline, reducing downtime.
- Compliance: Manufactured under ISO9001 quality management system; all valves undergo hydrostatic and pneumatic testing before shipment.
| Parameter | Value |
|---|---|
| Standard | JIS F7481 |
| Size Range | DN50 – DN600 (2" – 24") |
| Face-to-Face Dimensions | Per JIS B2002 (short pattern or long pattern) |
| Flange Drilling | JIS 5K/10K, also customizable to ANSI or DIN |
| Test Pressure (Shell) | 1.5 x Rated Pressure |
| Test Pressure (Seat) | 1.1 x Rated Pressure |
| Operation Types | Lever handle, worm gear, pneumatic actuator, electric actuator |
Benefits for Your Application: By selecting our custom JIS F7481 butterfly valve, you benefit from reduced weight and installation space compared to gate valves or globe valves. The streamlined disc profile minimizes pressure drop, saving pumping energy. The corrosion-resistant materials extend service life even in aggressive seawater environments, lowering total cost of ownership. Our OEM service allows you to incorporate your unique brand identity or technical requirements, making this valve a perfect fit for new shipbuilding or retrofitting projects.
Trust & Reliability: Shanghai Zhibang Valve Manufacture Co., Ltd. has been serving global markets since 2016, with annual export revenue exceeding US$1 million. Our valves are shipped to North America, South America, Europe, Southeast Asia, Africa, Oceania, Middle East, and domestic markets via ports in Shanghai, Guangzhou, Hong Kong, and Beijing. Each valve is backed by ISO9001 certified processes, rigorous quality checks, and a professional after-sales team. We are committed to delivering on time, with typical lead times of 15-30 days for standard sizes. For bulk OEM orders, we offer competitive pricing and technical support.
Contact us today to discuss your specific requirements for shipboard seawater and ballast systems. Let our engineering team design the perfect valve solution for you.
Frequently Asked Questions (FAQ)
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Q: What materials are available for the valve disc and body?
A: The valve body is available in ductile iron (GGG40) or stainless steel (CF8M). Disc options include aluminum bronze (e.g., AB2) and stainless steel. Seat materials are EPDM (standard for seawater), PTFE (for higher chemical resistance), or Nitrile (for oil applications). -
Q: Can you produce valves with non-JIS flange drilling?
A: Yes, we offer OEM customization. We can drill flanges according to ANSI 150/300, DIN PN10/PN16, or other standards upon request. The face-to-face dimension can also be adjusted. -
Q: What is the typical lead time for an OEM order?
A: For standard sizes (DN50-DN300), lead time is 15-20 days. For larger sizes or special materials, it is 25-30 days. We can expedite for urgent projects. -
Q: How do you ensure valve quality for seawater application?
A: All valves are hydrostatically tested at 1.5 times rated pressure for shell integrity and 1.1 times for seat leakage. We also conduct optional seawater immersion tests and material certificates (Mill Test Report) are available. -
Q: Do you provide pneumatic or electric actuators?
A: Yes, we can supply compatible actuators (spring-return or double-acting for pneumatic; 24V/220V/380V AC/DC for electric). The valve mounting pad is per ISO 5211 standard. -
Q: What is the minimum order quantity (MOQ) for custom butterfly valves?
A: For OEM orders with custom logo and packaging, the MOQ is typically 10 pieces per size. For standard products without customization, MOQ can be as low as 1-2 pieces. -
Q: Can the valve handle both seawater and ballast water?
A: Absolutely. With disc in aluminum bronze and seat in EPDM, the valve is well-suited for both seawater and ballast water systems. For ballast water treatment systems, we recommend PTFE seat for better resistance to residual chemicals. -
Q: Do you offer certification for marine classification societies?
A: While we do not hold specific classification society approvals, we can provide material certificates and test reports as requested. For class-specific requirements, please consult our sales team for feasibility.
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