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Help CenterJIS F7300 5K Marine Ball Valve With Carbon Steel Body & Stainless Steel Ball for Seawater Systems
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As a specialized manufacturer with a strong export record, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance JIS F7300 5K Marine Ball Valve. Engineered for the demanding conditions of maritime applications, this valve is designed to provide reliable, long-lasting service in seawater, ballast, and cooling systems on vessels and offshore platforms. Our commitment to ISO9001-certified manufacturing processes ensures that each valve meets stringent quality standards, offering shipbuilders, shipowners, and marine engineers a dependable component for critical fluid control. With a robust construction featuring a carbon steel body and a corrosion-resistant stainless steel ball, this valve is built to withstand the harsh marine environment, ensuring operational safety and minimizing maintenance downtime.
This marine ball valve is meticulously crafted to comply with the Japanese Industrial Standard JIS F7300, a specification widely recognized and trusted in the global shipbuilding industry. The 5K pressure rating (equivalent to PN10) makes it suitable for a broad range of low to medium-pressure seawater applications. The combination of materials is key to its durability: the carbon steel body provides exceptional structural strength and resistance to mechanical stress, while the precision-machined stainless steel ball offers excellent corrosion resistance against chlorides present in seawater, preventing seizing and ensuring smooth quarter-turn operation over its extended service life.
- Superior Corrosion Resistance: The stainless steel ball and stem are specifically selected for marine service, offering enhanced protection against pitting and crevice corrosion in saline environments.
- Robust & Reliable Sealing: Equipped with advanced PTFE or reinforced PTFE seats and seals, the valve ensures a bubble-tight shut-off, preventing leakage in critical systems.
- Easy Operation & Maintenance: The standard lever handle allows for quick and easy manual operation. For larger sizes or higher torque requirements, a gearbox operator is available as an option.
- Versatile Flange Connection: The valve features JIS B2220 flanges, ensuring compatibility with existing piping systems commonly used in ships built to Asian standards. Other flange standards can be customized upon request.
- Fire-Safe Design Option: For applications requiring additional safety, a fire-safe design with metal secondary sealing is available to prevent catastrophic failure in extreme conditions.
- Full Port Design: Available in full port (full bore) configuration to minimize pressure drop and allow for the passage of pigs or cleaning equipment in the pipeline.
Technical specifications for standard configurations are summarized in the table below. Please note that custom specifications for materials, pressure ratings, and actuators are available for OEM and project-specific requirements.
| Parameter | Specification |
|---|---|
| Design Standard | JIS F7300 |
| Pressure Class | 5K (PN10) |
| Size Range | DN15 (1/2") to DN300 (12") |
| Body Material | Carbon Steel (WCB, LCB, etc.) |
| Ball & Stem Material | Stainless Steel (SS304, SS316) |
| Seat & Seal Material | PTFE, Reinforced PTFE, RPTFE |
| Temperature Range | -20°C to 150°C (Standard) |
| Operation | Lever Handle (Standard), Gear Operator (Optional) |
Choosing our JIS F7300 marine ball valve brings tangible benefits to your operations. The reduced maintenance needs translate directly into lower lifecycle costs and less vessel downtime. The reliable performance enhances the safety and efficiency of seawater systems, protecting expensive downstream equipment from potential damage due to valve failure. Furthermore, the standard-compliant design simplifies the procurement and installation process for shipyards and repair docks, ensuring seamless integration into your projects.
Backed by Shanghai Zhibang Valve's ISO9001 quality management system and nearly a decade of manufacturing expertise since our establishment in 2016, you can be confident in the consistency and reliability of every valve we produce. Our products have gained the trust of clients across diverse markets, including North America, Europe, Southeast Asia, and the Middle East, with an annual export value consistently reaching up to US$1.5 million. We support this global reach with efficient logistics from major ports like Shanghai, Guangzhou, and Hong Kong. For your next marine project requiring durable, specification-compliant fluid control solutions, contact us to discuss your requirements or request a detailed quotation. Let our reliable valves be a cornerstone of your system's integrity.
Frequently Asked Questions (FAQ)
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Q: What does the "5K" pressure rating mean?
A: "5K" is a Japanese pressure class designation, equivalent to a nominal pressure of PN10. It indicates the valve is suitable for applications with a maximum working pressure of approximately 10 bar at ambient temperature. -
Q: Is this valve suitable for freshwater systems as well?
A: Absolutely. While specifically designed for seawater's corrosive nature, its construction makes it an excellent and durable choice for freshwater cooling, ballast, and general service on ships and in coastal plants. -
Q: Can you provide valves with different flange standards, like ANSI or DIN?
A: Yes. While the standard offering is JIS B2220 flanges, we regularly produce valves with ANSI, DIN, and other international flange standards. Please specify your requirement when inquiring. -
Q: What are the available options for the stem seal?
A: Standard stem seals are PTFE-based for excellent chemical resistance and low friction. For extended service life or higher temperature/pressure, options like reinforced graphite packing are available. -
Q: Do you offer actuated versions of this valve?
A: Yes. We can equip this ball valve with electric, pneumatic, or hydraulic actuators for remote or automated control. Actuator selection depends on your specific control system and power availability. -
Q: What is the typical lead time for an order?
A: Lead time varies based on order quantity, size, and customization. Standard sizes are often available from stock or have shorter production cycles. We provide a clear delivery schedule upon order confirmation. -
Q: How does the carbon steel body resist corrosion in seawater?
A: The carbon steel body is typically protected by a robust external coating or paint system (epoxy, etc.) as specified by the customer. For highly corrosive splash zones, alternative body materials like duplex stainless steel can be explored. -
Q: What documentation do you provide with the valves?
A: We provide a comprehensive package including material certificates, pressure test reports, and a detailed dimensional drawing. Certificates of conformity to JIS F7300 can also be supplied.
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