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Home > Industrial Equipment & Components > Valve > Butterfly Valve > Precision JIS F7481 Butterfly Valve for Marine OEM, Cast Steel Body With PTFE Seat

Precision JIS F7481 Butterfly Valve for Marine OEM, Cast Steel Body With PTFE Seat

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Product Spotlights

Marine-grade butterfly valve compliant with JIS F7481 standard. Features a durable cast steel body and PTFE seat for exceptional corrosion resistance and leak-proof sealing in seawater applications. Offers reliable performance, versatile actuation options, and is backed by ISO9001 manufacturing. Ideal for shipbuilding OEMs seeking precision, durability, and global compliance.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Standard:

JIS F7481

Application:

Other, Marine OEM

Body Material:

Cast Steel

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Standard JIS F7481

Application Other, Marine OEM

Body Material Cast Steel

Seat Material PTFE

Operation Type Lever, Gear, Electric Actuator Optional

Connection Type Wafer, Lug, Flanged Optional

Pressure Rating JIS 10K, 16K, 20K Available

Size Range DN50 to DN600 (2“ to 24“)

Temperature Range -20°C to 180°C (-4°F to 356°F)

Certification ISO9001 Quality Management System

As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions for demanding industries worldwide. Our Precision JIS F7481 Butterfly Valve is engineered specifically for marine OEM applications, where reliability, corrosion resistance, and precise flow control are paramount. With an annual export value ranging between US$1 Million and US$1.5 Million, we have built a solid reputation across major markets including North America, Southeast Asia, Europe, and Oceania. This valve represents our commitment to quality, featuring a robust cast steel body and a PTFE seat to ensure long-lasting, leak-free operation in harsh marine environments.

This valve is designed to meet the rigorous JIS F7481 standard, which specifies requirements for shipbuilding valves. Its construction and performance are tailored for seawater, ballast, cooling, and other critical shipboard systems.

Superior Durability: The cast steel body provides exceptional strength and impact resistance, capable of withstanding the physical stresses and high pressures encountered in marine service.
Excellent Sealing Performance: The PTFE (Polytetrafluoroethylene) seat offers outstanding chemical inertness and a low coefficient of friction, ensuring a bubble-tight seal and reliable shut-off even after numerous cycles.
Corrosion Resistance: Both the cast steel body (often with appropriate coatings or material grades) and the inert PTFE seat are highly resistant to corrosion from saltwater, chemicals, and other aggressive media found on ships.
Precision Engineering: Manufactured under our ISO9001 certified quality management system, every valve undergoes stringent inspections to guarantee dimensional accuracy, smooth disc operation, and consistent performance.
Versatile Operation: Available with various actuation options including manual lever, gear operator, or electric actuator to suit different automation and control requirements on board.
Easy Installation & Maintenance: The compact wafer or lug design allows for easy installation between pipe flanges, saving space and weight – a critical factor in marine design. Maintenance is minimal due to the robust design and durable materials.

Technical specifications for standard models are summarized below. Custom configurations regarding pressure rating, size, and end connections are available upon request.

Parameter	Specification / Option
Design Standard	JIS F7481
Body Material	Cast Steel (WCB, LCB, etc.)
Disc Material	Stainless Steel (CF8M, 316SS) or Cast Steel
Seat Material	PTFE
Stem Material	Stainless Steel (416, 304, 316)
Pressure Rating	JIS 10K, 16K, 20K
Size Range	DN50 to DN600 (2" to 24")
Temperature Range	-20°C to 180°C (-4°F to 356°F)
End Connection	Wafer, Lug, Double Flange
Operation	Lever, Gear Box, Electric/Pneumatic Actuator

Benefits for Your Marine Projects:

Enhanced System Reliability: Reduces the risk of leaks and failures in critical ship systems, contributing to overall vessel safety and operational uptime.
Long Service Life: The combination of cast steel and PTFE minimizes wear and degradation, leading to lower lifetime costs and reduced replacement frequency.
Compliance & Compatibility: Conformance to JIS F7481 ensures the valve meets recognized industry standards for marine applications, simplifying specification and approval processes for OEMs.
Global Supply Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and efficient logistics to shipyards and clients across the globe.

Shanghai Zhibang's decade-long manufacturing expertise and ISO9001 certification are your assurance of consistent quality. Our valves are trusted by marine OEMs and operators from Eastern Europe to North America, Africa to Oceania. This global acceptance underscores the product's reliability and our capability as a supplier. Choosing our Precision JIS F7481 Butterfly Valve means selecting a component that is built to last, designed to perform, and backed by a manufacturer with a proven export track record. We encourage you to contact us for detailed quotations, technical datasheets, or to discuss custom requirements for your specific marine application. Let us be your reliable partner for precision fluid control solutions.

Frequently Asked Questions (FAQ)

Q: What does "JIS F7481" mean, and why is it important for marine valves?
A: JIS F7481 is a Japanese Industrial Standard specifically for shipbuilding valves. It defines requirements for materials, design, pressure ratings, testing, and marking. Using a valve compliant with this standard ensures it is suitable for the demanding conditions of marine service and is widely recognized by shipyards and classification societies.
Q: Can this butterfly valve handle seawater applications?
A: Yes, it is well-suited for seawater. The cast steel body (with suitable grade/coating) and corrosion-resistant stainless steel internals, combined with the inert PTFE seat, provide excellent resistance to saltwater corrosion. Specific material grades can be selected for optimal performance in seawater.
Q: What are the available actuation methods?
A: The valve can be supplied with a manual lever for quick operation, a gear operator for higher torque applications, or automated with electric or pneumatic actuators for remote control and integration into shipboard control systems.
Q: Is the PTFE seat suitable for high temperatures?
A: The standard PTFE seat performs reliably within the specified temperature range of -20°C to 180°C. For applications near or above the upper limit, alternative seat materials can be explored upon request.
Q: Do you offer certifications for marine classification societies?
A: While our production is under ISO9001 quality management, specific certifications from classification societies like ABS, DNV, LR, etc., are typically project-specific and can be arranged upon request, subject to additional testing and documentation.
Q: What is the lead time for an order?
A: Lead time depends on order quantity, size, and configuration. Standard sizes and configurations generally have shorter lead times. We provide estimated lead times upon receipt of your specific inquiry to ensure it aligns with your project schedule.
Q: Can you provide custom markings or packaging?
A: Yes, we can accommodate custom marking requirements (such as specific part numbers or logos) and packaging suitable for marine export and storage, including wooden cases or anti-corrosion packaging.
Q: How do you ensure quality control?
A> Every valve undergoes a series of checks including dimensional inspection, material verification, pressure testing (shell and seat tests), and operational tests. Our ISO9001 system provides the framework for consistent quality from raw material to finished product.