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Home > Industrial Equipment & Components > Valve > Butterfly Valve > JIS F7481 Marine Wafer Butterfly Valve DN50 DN100 DN150 DN200 DN250 DN300 DN350 DN400 DN450 DN500 DN600
JIS F7481 Marine Wafer Butterfly Valve DN50 DN100 DN150 DN200 DN250 DN300 DN350 DN400 DN450 DN500 DN600
Product Spotlights
JIS F7481 compliant marine wafer butterfly valves from DN50 to DN600. Features compact wafer design saving space/weight, corrosion-resistant materials (stainless steel, bronze options), and multiple seat choices (EPDM, NBR, PTFE, Viton) for seawater, fuel, and chemical services. ISO9001 certified manufacturer ensures reliable performance for global shipbuilding and offshore applications.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
JIS F7481
Application:
Other, Marine
Type:
Wafer Butterfly Valve
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
JIS F7481
Application
Other, Marine
Type
Wafer Butterfly Valve
Size Range
DN50, DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600
Body Material
Ductile Iron, Cast Steel, Stainless Steel (Optional)
Disc Material
Stainless Steel, Nickel Plated, Aluminum Bronze
Seat Material
EPDM, NBR, PTFE, Viton (Optional)
Operating Temperature
-20°C to +120°C (Depending on Seat)
Pressure Rating
JIS 10K, JIS 20K (Available)
As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-performance industrial valves for demanding applications worldwide. Our JIS F7481 Marine Wafer Butterfly Valves are engineered to meet the rigorous standards of the marine and shipbuilding industries, offering reliable flow control for seawater, ballast, fuel, and other shipboard systems. With an annual export value reflecting our global reach across North America, South America, Europe, Asia, Africa, and Oceania, we understand the critical need for durable, corrosion-resistant, and maintenance-friendly valves that perform consistently in harsh marine environments. This product line, available from DN50 to DN600, is designed to provide a compact, lightweight, and cost-effective sealing solution without compromising on performance or longevity.
Key Product Features & Technical Advantages:
- JIS F7481 Compliance: Manufactured strictly in accordance with Japanese Industrial Standard F7481 for shipbuilding pipe fittings, ensuring compatibility with marine piping systems and international acceptance.
- Optimized Wafer Design: The wafer-style body is installed between two pipe flanges using through-bolts, saving significant space and weight compared to lug-type valves—a crucial advantage in space-constrained engine rooms and bilges.
- Superior Sealing Performance: Utilizes a resilient seat (EPDM, NBR, PTFE, or Viton options) that provides bubble-tight shut-off. The disc design minimizes pressure drop and turbulence for efficient flow.
- Corrosion Resistance: Critical components like the disc and stem are available in stainless steel, nickel-plated, or aluminum bronze to withstand seawater, brackish water, and corrosive shipboard fluids.
- Robust Construction: The valve body is typically cast from ductile iron or cast steel, providing high tensile strength and impact resistance for the demanding conditions at sea.
- Versatile Actuation Options: Can be operated manually via a lever, gearbox, or equipped with electric, pneumatic, or hydraulic actuators for remote and automated control systems.
- Low Maintenance: Simple two/three-piece construction with minimal moving parts reduces the need for frequent maintenance and allows for easy in-line seat replacement in many cases.
- Bidirectional Flow Capability: Designed to seal effectively against flow from either direction, simplifying installation and system design.
Technical Specifications & Available Options:
| Parameter | Specification / Option |
| Design Standard | JIS F7481 |
| Nominal Diameter (DN) | 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600 |
| Pressure Rating | JIS 10K (PN16), JIS 20K (PN40) - Available upon request |
| Body Material | Ductile Iron (GGG40), Cast Steel (WCB), Stainless Steel (CF8/CF8M) |
| Disc Material | Stainless Steel (SS304/316), Nickel Plated Ductile Iron, Aluminum Bronze |
| Stem Material | Stainless Steel (SS416/304), Monel, with optional seal bushings |
| Seat Material | EPDM (Water, Steam), NBR (Oil), PTFE (Chemicals), Viton (High Temp/Fuel) |
| Operating Temp. Range | EPDM: -20°C to +120°C; PTFE: -30°C to +200°C (Varies by seat) |
| End Connection | Wafer type for JIS 10K/20K flange drilling (RF face common) |
| Operation | Lever, Gear Operator, Electric Actuator, Pneumatic Actuator (Double Acting/Spring Return) |
Benefits for Your Marine Projects:
- System Reliability: Ensures leak-free operation in critical shipboard systems like fire mains, cooling water, ballast, and fuel transfer, enhancing vessel safety and operational integrity.
- Reduced Lifetime Cost: The combination of durable materials, low maintenance requirements, and long service life leads to a lower total cost of ownership compared to alternative valve types.
- Global Supply Chain Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to shipyards and repair docks worldwide, supporting tight project schedules.
- Customization Flexibility: We offer various material and seat combinations to match specific fluid media (seawater, lube oil, chemicals) and operating conditions on different vessel types (tankers, container ships, offshore support vessels).
- Simplified Inventory: The wafer design's compatibility with standard JIS flanges reduces the need for special fittings or adapters, streamlining procurement and installation.
Shanghai Zhibang's commitment to quality is underscored by our ISO9001 certification, a systematic approach that governs every stage of our valve manufacturing process—from material sourcing and casting to machining, assembly, and testing. Our valves are trusted in diverse marine applications across the globe, from the shipyards of Eastern Asia and Southeast Asia to the fleets operating in the waters of North America, Europe, and Oceania. This JIS F7481 Marine Wafer Butterfly Valve series embodies our dedication to providing robust, specification-compliant solutions that meet the exacting demands of the international maritime industry. For your next marine or offshore project requiring reliable, standardized, and competitively priced flow control components, contact us to discuss your requirements for sizes DN50 through DN600.
Frequently Asked Questions (FAQ)
-
Q: What is the main advantage of a wafer-style butterfly valve over a lug-style for marine use?
A: The wafer design is significantly lighter and more compact, as it relies on the flange bolts for structural connection. This saves weight and space, which are premium considerations in ship design. It is also generally more cost-effective for the same size and pressure rating. -
Q: Are these valves suitable for seawater service?
A: Yes, when configured with appropriate materials. We recommend a stainless steel (316) or nickel-plated disc and stem, along with an EPDM seat, for standard seawater applications to ensure optimal corrosion resistance and service life. -
Q: Can I use this JIS standard valve with ANSI or DIN piping systems?
A: While designed for JIS flange drilling, the pressure ratings (like JIS 10K ≈ PN16) are often compatible. However, flange dimensions (bolt circle, hole size) differ. It's crucial to verify compatibility or request valves with dual-standard flange drilling if your system uses mixed standards. -
Q: What is the typical delivery lead time for an order of DN300 valves?
A: Lead times vary based on order quantity, material specifications, and actuation requirements. For standard configurations in ductile iron with EPDM seats, production can often be completed within 4-6 weeks, plus shipping time from our ports in Shanghai, Guangzhou, Hong Kong, or Beijing. -
Q: Do you provide valves with actuators for automated control systems?
A: Absolutely. We can supply and pre-assemble the valves with electric or pneumatic actuators suited for marine environments (e.g., with IP67/IP68 protection, corrosion-resistant coatings). Please specify your control signal, voltage, and fail-safe requirements. -
Q: How do I determine the correct seat material for my application?
A: The seat material depends on the fluid media and temperature. EPDM is common for water up to 120°C, NBR for oils, PTFE for aggressive chemicals, and Viton for higher temperatures or certain fuels. Our technical team can assist in selection based on your specific service conditions. -
Q: Are spare parts like seals and discs available for future maintenance?
A: Yes, we maintain an inventory of critical spare parts for our valve models. We recommend purchasing a maintenance kit with your valve order to ensure quick turnaround on any required repairs, minimizing vessel downtime. -
Q: What testing is performed on the valves before shipment?
A> Each valve undergoes a shell test (body strength) and a seat leak test (sealing performance) per applicable standards. Certificates of conformance and test reports can be provided upon request to support your quality documentation requirements.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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