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Home > Industrial Equipment & Components > Valve > Butterfly Valve > OEM JIS F7481 Butterfly Valve for Marine Engine Room Cooling Water Piping

OEM JIS F7481 Butterfly Valve for Marine Engine Room Cooling Water Piping

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OEM JIS F7481 Butterfly Valve for Marine Engine Room Cooling Water Piping photo-4

OEM JIS F7481 Butterfly Valve for Marine Engine Room Cooling Water Piping photo-5

Product Spotlights

JIS F7481 compliant marine butterfly valve designed for engine room cooling water systems. Features corrosion-resistant material options (epoxy-coated iron, stainless steel) and resilient seats (EPDM/NBR/PTFE) for leak-proof performance in seawater. Compact wafer design saves space. Available with manual lever, gear, or automated actuators. ISO9001 certified manufacturing ensures reliability for global maritime 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 Engine Room Cooling Water Piping

Body Material:

Ductile Iron, Cast Steel, Stainless Steel

Contact Supplier Request Quote Chat Now

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 Engine Room Cooling Water Piping

Body Material Ductile Iron, Cast Steel, Stainless Steel

Seat Material EPDM, NBR, PTFE

Disc Material Stainless Steel, Ductile Iron

Connection Type Wafer, Lug, Flanged

Operation Lever, Gear, Pneumatic, Electric

Size Range DN50 to DN600 (2“ to 24“)

Pressure Rating PN10, PN16, Class 150

Temperature Range -10°C to 120°C

As a professional manufacturer of industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions for demanding applications. Our OEM JIS F7481 Butterfly Valve is engineered specifically for marine engine room cooling water piping systems, where reliability and durability are non-negotiable. This valve is designed to meet the rigorous standards of the maritime industry, offering precise flow control, exceptional sealing performance, and long service life in corrosive seawater environments. We understand the critical role these valves play in vessel operation, and our product is built to withstand constant vibration, thermal cycling, and high-pressure demands. With our commitment to quality and extensive experience in valve manufacturing, we deliver components that shipbuilders and marine engineers can trust for their most vital systems.

Core Product Features & Technical Advantages:

JIS F7481 Compliance: Manufactured in strict accordance with Japanese Industrial Standard F7481, ensuring compatibility and performance acceptance within global marine projects, particularly those with Japanese engineering specifications.
Corrosion-Resistant Construction: Available in a range of materials including epoxy-coated ductile iron, cast steel, and 316 stainless steel bodies to combat the highly corrosive nature of seawater and cooling water treatments.
Superior Sealing Technology: Features a resilient seat (EPDM, NBR, or PTFE) that provides a bubble-tight seal, preventing leakage and ensuring system efficiency. The disc design minimizes pressure drop and turbulence.
Robust Stem & Bearing Design: Utilizes a one-piece stainless steel stem and sealed bearings to prevent seizure, reduce operating torque, and ensure smooth 90-degree operation even after prolonged periods of inactivity.
Versatile Actuation Options: Can be supplied with a manual lever, gear operator, or automated pneumatic/electric actuators for integration into remote control and monitoring systems.
Compact & Lightweight Design: The wafer-style body offers a space-saving and weight-reducing advantage over gate valves, which is crucial for marine applications where space and weight are at a premium.

Detailed Technical Specifications:

Parameter	Specification
Design Standard	JIS F7481
Nominal Diameter (DN)	50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600
Pressure Rating	PN10, PN16, Class 150
Temperature Range	-10°C to 120°C (dependent on seat material)
Body Material Options	Ductile Iron (Epoxy Coated), WCB Cast Steel, CF8/CF8M Stainless Steel
Seat Material Options	EPDM (General seawater), NBR (Oil resistance), PTFE (High temp/Chemical)
Disc Material	Stainless Steel (304/316), Ductile Iron (Ni-plated)
Connection Type	Wafer (Standard), Lug, Double Flanged

Benefits for Your Marine Application:

Enhanced System Reliability: Prevents unexpected cooling system failures, ensuring continuous operation of main and auxiliary engines.
Reduced Maintenance Costs: Durable materials and design minimize corrosion, wear, and the need for frequent replacement or repair.
Improved Operational Safety: Leak-proof performance protects engine room equipment and personnel from water damage and slip hazards.
Global Project Compatibility: JIS standard compliance facilitates procurement for shipyards and repair docks working with international specifications.
Flexible OEM Service: We offer customization for branding, packaging, and minor design adjustments to meet specific OEM partner requirements.

Backed by our ISO9001 certified quality management system, every valve undergoes rigorous testing for shell strength, seat sealing, and operational torque before shipment. Since our establishment in 2016, Shanghai Zhibang Valve has grown into a trusted supplier, exporting over US$1 million in valves annually to key maritime markets including North America, Southeast Asia, Europe, and the Middle East. Our strategic location and multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing) ensure flexible and efficient logistics for global clients. Choose our JIS F7481 Butterfly Valve for a component that delivers proven performance, simplifies your supply chain, and contributes to the long-term reliability of your marine vessels. Contact us today for a detailed quotation or to discuss your specific project needs.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of a JIS F7481 valve over other standards like ISO or ANSI for marine use?
A: The JIS F7481 standard is widely recognized and specified in many Asian shipbuilding and repair yards. Using a JIS-compliant valve ensures dimensional compatibility and performance acceptance in projects that follow Japanese engineering practices, simplifying procurement and installation.
Q: Can this valve handle raw seawater, or is it only for treated cooling water?
A: It is designed for both. With the appropriate material selection—such as an epoxy-coated ductile iron or stainless steel body and EPDM seat—the valve is highly resistant to corrosion from raw seawater, making it suitable for seawater intake lines, overboard discharge, and central cooling systems.
Q: Are spare parts like seats and seals readily available?
A: Yes. We maintain an inventory of common spare parts. The valve is designed for easy maintenance, and seat replacement kits can be provided to minimize vessel downtime during scheduled maintenance.
Q: What is the typical delivery lead time for an OEM order?
A: Lead time varies based on order quantity, size, and material specifications. Standard configurations are typically available within 15-30 days. We provide accurate lead time estimates upon receipt of your detailed inquiry.
Q: Do you provide valves with actuators for automated control systems?
A> Absolutely. We can supply the valve as a complete package with pneumatic (on/off or modulating) or electric actuators. Our technical team can help specify the correct actuator based on your system's pressure, required torque, and control signal.
Q: How do you ensure quality control for marine-grade valves?
A> Our ISO9001 certification underpins our entire manufacturing process. We perform material certification checks, dimensional inspections, and final tests including hydrostatic shell tests and seat leakage tests per relevant standards to ensure each valve meets its performance specifications.
Q: Is customization available for different flange standards or face-to-face dimensions?
A> Yes, we offer customization services. While the standard design follows JIS flange dimensions, we can manufacture valves to accommodate other flange standards (e.g., ANSI, DIN) or specific face-to-face lengths upon request for retrofit projects.
Q: What documentation is provided with the shipment?
A> Standard documentation includes a commercial invoice, packing list, material certificates, and a test report. Additional certificates, such as a 3.1 material certificate, can be provided upon request.