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Help CenterJIS F7305 Marine Globe Valve For Seawater, Ductile Iron Body, 316L Internals, DN50-DN200 10K Flanged
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Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to offer the JIS F7305 Marine Globe Valve – a high-performance solution specifically designed for seawater applications. As an ISO9001 certified manufacturer established in 2016, we combine years of engineering expertise with a strong global export record (USD1M–1.5M annual) to deliver valves that meet the rigorous demands of marine environments. This globe valve features a ductile iron body and 316L stainless steel internals, ensuring exceptional corrosion resistance and long service life even in harsh seawater conditions. Available in sizes DN50–DN200 with 10K flanged ends, it is the ideal choice for ballast systems, cooling water lines, and other marine piping.
Our globe valve is engineered to provide precise flow control and tight shut-off, making it a critical component for shipbuilding, offshore platforms, and coastal facilities. The 316L internal parts (including disc, seat, and stem) offer superior pitting and crevice corrosion resistance compared to standard 304 stainless steel, while the ductile iron body delivers high tensile strength and impact resistance.
Key Features & Technical Specifications
- Ductile Iron Body (ASTM A536 Grade 65-45-12) – Provides excellent mechanical strength and durability for marine service.
- 316L Stainless Steel Internals – Includes disc, seat, and stem for maximum corrosion resistance in seawater and chloride environments.
- JIS F7305 Design & Flanged Ends – Conforms to Japanese Industrial Standard, with 10K pressure rating suitable for low-to-medium pressure marine systems.
- Full Bore or Reduced Bore Options – Available upon request. Standard configuration is reduced bore for better throttling control.
- Rising Stem with Handwheel – Easy operation and visual indication of valve position.
- PTFE or Graphite Packing – Optional stem sealing materials to suit temperature and media requirements.
- Tested to 1.5x Rated Pressure – Shell and seat hydrostatic tests performed per JIS B2003 standards.
| Parameter | Specification |
|---|---|
| Valve Size | DN50, DN65, DN80, DN100, DN125, DN150, DN200 |
| Pressure Rating | 10K (approx. 1.0 MPa / 145 psi at ambient temp) |
| Body Material | Ductile Iron (ASTM A536, GGG40/50 equivalent) |
| Internal Material | 316L Stainless Steel (CF3M casting) |
| Flange Standard | JIS B2210 10K (RF or FF, customizable) |
| Operation | Manual handwheel (gear or actuator optional) |
| Applicable Media | Seawater, freshwater, oily water, steam, air, and other non-corrosive fluids |
| Certification | ISO9001:2015 (quality management system); material certificates available upon request |
Advantages for Buyers
- Exceptional Corrosion Resistance – 316L internals withstand chloride attack, reducing maintenance and replacement costs in seawater service.
- Strong & Lightweight – Ductile iron body offers higher strength than cast iron with lower weight, facilitating installation.
- Standardized Design – Conforms to JIS F7305, ensuring interchangeability and compatibility with existing Japanese-standard piping systems.
- Reliable Sealing – Precision-machined disc and seat provide bubble-tight shut-off when closed.
- Wide Size Range – From DN50 to DN200 covers most marine pipeline requirements.
- Customization Options – We can provide gear operators, electric actuators, or special coatings (e.g., epoxy paint) upon request.
Shanghai Zhibang Valve has been serving global markets since 2016, exporting over USD1 million worth of valves annually to regions including North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our ISO9001 certified factory ensures consistent quality control throughout production. Each valve undergoes hydrostatic testing and visual inspection before shipment.
We understand the critical nature of marine applications. That's why every JIS F7305 globe valve is manufactured with strict adherence to standards and backed by responsive customer support. With our convenient shipping ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we can deliver efficiently worldwide.
Contact us today for a competitive quote and let our expertise support your next marine project.
Frequently Asked Questions
Q1: Can this valve be used for potable water or only seawater?
A: The JIS F7305 marine globe valve is primarily designed for seawater, but the materials (ductile iron + 316L) are also suitable for freshwater, cooling water, and low-pressure steam. However, for potable water, we recommend checking local regulations – internal coating options are available.
Q2: What is the maximum operating pressure for a DN200 10K valve?
A: For 10K rating, the maximum allowable working pressure depends on temperature. At ambient temperature (≤120°C), it is approximately 1.0 MPa (145 psi). For higher temperatures, derating applies. Please consult our technical datasheet for exact values.
Q3: Do you provide third-party inspection or certification?
A: Yes, we can arrange third-party inspection (e.g., Lloyd’s, DNV, or other classification society) at an additional cost. Material certificates and test reports are available upon request.
Q4: Is the valve supplied with counterflanges and bolts?
A: Standard supply includes the valve only. We can provide matching JIS 10K flanges, gaskets, and bolts as optional accessories. Please specify when ordering.
Q5: What is the typical lead time for DN100 size?
A: For standard DN50–DN200 valves, lead time is 25–35 working days after order confirmation. Urgent orders may be expedited – please contact our sales team.
Q6: Can the valve be fitted with an electric actuator?
A: Yes, we offer a range of electric and pneumatic actuators suitable for globe valves. The mounting bracket and coupling comply with ISO 5211. Please provide actuator requirements.
Q7: How do you prevent galvanic corrosion between the ductile iron body and 316L internals?
A: In seawater, galvanic corrosion can occur. Our design includes proper insulation between dissimilar metals (e.g., use of gaskets, coatings, or sacrificial anodes). For critical applications, we recommend cathodic protection or special coating – consult our engineers.
Q8: Does your ISO9001 certification cover this product line?
A: Yes, our ISO9001:2015 quality management system covers the design, manufacturing, and testing of marine globe valves. We maintain strict process control to ensure consistent quality.
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