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Home > Industrial Equipment & Components > Valve > Gate Valve > JIS F7363 Marine Gate Valve for Seawater and Bilge Systems, Cast Iron Body

JIS F7363 Marine Gate Valve for Seawater and Bilge Systems, Cast Iron Body

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Product Spotlights

JIS F7363 compliant marine gate valve designed for corrosive seawater and bilge systems. Features a durable cast iron body with corrosion-resistant bronze/stainless steel trim for long service life. Offers reliable shut-off, easy operation with rising stem, and options for handwheel or gear drive. Suitable for ballast, cooling, and firefighting lines, ensuring system safety and reliability in global maritime applications.

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

Key Specifications

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Application:

Other, Seawater / Bilge / Ballast Systems

Product Standard:

JIS F7363

Body Material:

Cast Iron

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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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Application Other, Seawater / Bilge / Ballast Systems

Product Standard JIS F7363

Body Material Cast Iron

Seat Material Bronze / Stainless Steel

Stem Material Stainless Steel

Connection Type Flanged (JIS 10K/16K)

Operation Type Handwheel / Gear Operator

Pressure Rating PN10/PN16 / Class 125/150

Temperature Range -10°C to 120°C

Size Range DN50 to DN500 (2“ to 20“)

As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-performance marine valves for demanding offshore and onboard applications. Our JIS F7363 Marine Gate Valve is engineered specifically for the rigorous requirements of seawater and bilge systems, offering reliable shut-off and durable service in corrosive marine environments. With extensive experience exporting to global markets including North America, Europe, and Southeast Asia, we understand the critical need for valves that combine compliance with international standards, robust construction, and long-term operational reliability. This gate valve represents our commitment to providing maritime engineers and shipbuilders with components that ensure system integrity and safety.

The valve's design and construction focus on overcoming the common challenges in marine fluid handling, such as corrosion, biofouling, and high-pressure surges. Its cast iron body provides excellent strength and cost-effectiveness, while carefully selected trim materials combat the aggressive nature of seawater. Whether for new vessel construction or maintenance projects, this valve is a dependable choice for controlling flow in essential shipboard systems.

Key Features & Technical Advantages:

Standard Compliance: Manufactured in strict accordance with the Japanese Industrial Standard JIS F7363, ensuring compatibility with international shipbuilding specifications and facilitating easier approval processes for shipyards and classification societies.
Corrosion-Resistant Construction: The cast iron body is typically coated with high-quality epoxy or other marine-grade coatings upon request. Critical internal components like the stem and seat rings are made from bronze or stainless steel (316/316L optional) to resist pitting and crevice corrosion from chlorides in seawater.
Robust Sealing Performance: Features a flexible wedge or solid wedge design (depending on model) that ensures tight shut-off even after prolonged periods of inactivity. The sealing surfaces are precision machined and can be supplied with various seat materials to match specific service conditions.
Easy Operation & Maintenance: Designed with a rising stem that provides clear visual indication of valve position. The handwheel is ergonomically designed, and gear operators are available for larger sizes (DN300 and above) to reduce operating torque. A standardized gland packing system allows for straightforward maintenance and repacking under pressure if necessary.
Versatile System Application: Primarily designed for seawater cooling lines, firefighting systems, ballast systems, and bilge pumping lines. Its full-bore design minimizes pressure drop, which is crucial for efficient pump operation in bilge and ballast systems.
Enhanced Durability: The design includes features such as a backseat, which allows for repacking the stem seal while the valve is under pressure, extending service intervals and improving safety during maintenance.

Technical Specifications Table:

Parameter	Specification
Design & Manufacturing Standard	JIS F7363
Pressure Rating	PN10, PN16 / Class 125, Class 150
Temperature Range	-10°C to 120°C (Standard) / Higher grades available
End Connection	Flanged to JIS B 2210/2212/2214 (10K, 16K) or other standards upon request
Stem Type	Outside Screw & Yoke (OS&Y), Rising Stem
Packing Material	Graphite, PTFE, or Flexible Graphite (standard)
Test Standards	Shell Test & Seat Leakage Test per JIS F7363 / API 598

Benefits for Your Project:

System Reliability: Reduces the risk of in-service failures in critical seawater and bilge systems, contributing to overall vessel safety and operational uptime.
Reduced Lifecycle Cost: The durable materials and design minimize the need for frequent replacements and costly unplanned maintenance, offering a favorable total cost of ownership.
Global Supply Chain Support: With annual export experience and multiple shipment ports including Shanghai, Guangzhou, and Hong Kong, we ensure timely delivery and logistical support for projects worldwide.
Customization Flexibility: While supplied as standard per JIS F7363, options for different coatings, trim materials, and flange facings are available to meet specific project requirements or classification society notes.

Trust in a product backed by a manufacturer with a proven track record since 2016, serving diverse maritime markets from Oceania to Northern Europe. Our ISO9001-certified quality management system governs every stage of production, from material sourcing to final testing, ensuring consistent performance. The valve's compliance with the widely recognized JIS F7363 standard provides assurance of its suitability for marine service. For shipyards, repair docks, and vessel operators seeking a reliable, specification-compliant valve for seawater and bilge applications, this product offers a balanced solution of performance, durability, and value. Contact us today to discuss your requirements, request detailed specifications, or arrange a sample evaluation.

Frequently Asked Questions (FAQ):

Q: Is this valve suitable for permanent immersion in seawater?
A: While designed for seawater service, the standard cast iron body requires a protective epoxy or similar coating for prolonged immersion. For continuously submerged applications, specifying an enhanced coating system is recommended.
Q: Can you provide valves with flanges to standards other than JIS, such as ANSI or DIN?
A: Yes, customization is available. While the valve is manufactured to the JIS F7363 design standard, we can often supply it with flange dimensions and drilling to ANSI, DIN, or other standards upon request to suit your piping system.
Q: What is the lead time for a typical order of these valves?
A: Lead times vary based on size, quantity, and customization. For standard sizes in moderate quantities, typical production lead time is 4-6 weeks. We recommend contacting us with your specific needs for an accurate schedule.
Q: How does the JIS F7363 standard compare to other marine valve standards like ASTM or BS?
A: JIS F7363 is a comprehensive Japanese standard specifically for marine steel and cast iron gate valves, covering design, materials, testing, and inspection. It is widely accepted and considered equivalent in rigor to other major international marine standards. We can provide cross-standard comparisons for your approval process.
Q: Is a gear operator necessary, and when should it be specified?
A: A gear operator is recommended for valves DN300 (12") and larger to reduce the required handwheel torque, making operation safer and easier for personnel. It can be supplied as a field-mountable option or factory-installed.
Q: Do you provide documentation for classification society approval?
A: We can provide standard material certificates, test reports (shell and seat), and manufacturing data sheets. For specific classification society (e.g., ABS, DNV, LR) certification, please inquire as requirements and associated processes may vary.
Q: What maintenance is required for this gate valve?
A: Routine maintenance primarily involves periodic inspection of the stem packing for leakage and re-torquing or repacking as needed. The backseat feature allows for safe packing adjustment under pressure. Lubrication of the stem threads and occasional cycling of the valve are also advised for long-term performance.
Q: Are these valves suitable for use in bilge systems where debris might be present?
A: The gate valve design, particularly the solid wedge type, can handle some particulate matter better than other valve types. However, for bilge systems with heavy debris, installing a strainer upstream is a good practice to protect all valves and pumps in the line.