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Help CenterJIS F7305 Marine Globe Valve With 12-Month Warranty, Mill Test Report, Ductile Iron, 316L, 10K Flanged
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Shanghai Zhibang Valve Manufacture Co., Ltd. proudly introduces our premium JIS F7305 Marine Globe Valve – a robust solution engineered for the most demanding marine and offshore environments. As an ISO9001-certified manufacturer established in 2016, we combine years of expertise with state-of-the-art production facilities to deliver valves that meet exacting global standards. With an annual export value exceeding US$1 Million and a presence across North America, South America, Europe, Asia, and Africa, our products have earned trust worldwide. This globe valve is specifically designed to provide reliable throttling and shut-off service in shipboard piping systems, featuring a durable ductile iron body with 316L stainless steel trim for superior corrosion resistance and extended service life.
Every unit comes with a 12-month warranty and a comprehensive Mill Test Report, ensuring full traceability of material properties. The 10K flanged connection conforming to JIS B2238 guarantees leak-free sealing and easy installation. Whether you need precise flow control for ballast lines, cooling water systems, or fuel lines, this valve offers the reliability and performance that marine operators demand.
Key Features & Technical Specifications
- Body Material: Ductile Iron (GGG40 / QT400) – high strength, excellent toughness, and resistance to seawater corrosion with proper coating.
- Trim Material: 316L Stainless Steel (SS316L) – utilized for disc, seat, and stem to withstand aggressive media and minimize maintenance.
- Pressure Rating: JIS 10K (equivalent to PN10 / 150 WOG) – suitable for low-pressure marine systems.
- Connection: Flanged ends according to JIS B2238 (10K flange drilling pattern).
- Design Standard: JIS F7305 – ensuring dimensional interchangeability and consistency.
- Operation: Handwheel with rising stem (outside screw and yoke), lockable option available.
- Test & Inspection: Hydrostatic shell test, seat leakage test, and mill test report for material verification.
- Surface Finish: Marine-grade paint (epoxy or anti-corrosive) applied inside and out.
Detailed Technical Data Table
| Parameter | Specification |
| Size Range | DN15 ~ DN300 (1/2" ~ 12") |
| Working Pressure | Up to 1.0 MPa (145 psi) at 120°C |
| Design Temperature | -20°C ~ 250°C (depending on trim) |
| Seat Leakage Class | Class VI (ANSI FCI 70-2) available |
| Stem Design | Rising stem – visual position indication |
| Coating | Epoxy paint (200 μm min.) or zinc-rich primer |
| Option | Bypass, gear operator, limit switch, chain wheel |
Advantages & Customer Benefits
- Long Service Life: Ductile iron body exceeds lifetime of cast iron or carbon steel in marine atmospheres; 316L trim resists pitting and crevice corrosion.
- Full Material Traceability: Mill Test Report provides chemical composition and mechanical properties of the raw materials, giving you confidence in quality.
- Low Maintenance: Stainless steel seat and disc reduce wear; bonnet gasket ensures leak-free sealing even after repeated cycles.
- Global Compatibility: JIS flanged dimensions are accepted in many shipbuilding and industrial applications; can also be customized to other standards upon request.
- Safety First: Hydrostatic test at 1.5 times rated pressure, seat leakage test in accordance with ISO 5208 Rate A.
- Easy Installation: Lightweight design compared to cast steel valves, reducing handling effort and structural load.
Why Choose Shanghai Zhibang Valve?
Since our establishment in 2016, we have built a solid reputation as a reliable manufacturer of marine valves. Our ISO9001 certification ensures strict quality control from incoming raw materials to final inspection. With annual exports between US$1 Million and US$1.5 Million, we ship to major ports worldwide including Shanghai, Guangzhou, Hong Kong, and Beijing. Our products are used in shipbuilding, offshore platforms, and industrial facilities across North America, Europe, Southeast Asia, Africa, and the Middle East. We offer a 12-month warranty against manufacturing defects and provide prompt technical support. Every valve is backed by our commitment to quality, competitive pricing, and on-time delivery.
Furthermore, we provide customized solutions: different trim materials (e.g., Stellite, Monel), extended bonnets for cryogenic or high-temperature service, and special coatings for extreme environments. Our engineering team can adapt the valve to your specific piping requirements. We also maintain a stock of popular sizes to ensure quick delivery.
Trust Shanghai Zhibang for your next marine globe valve project. Contact us today to receive a detailed quotation, technical drawing, or to discuss your unique application needs!
Frequently Asked Questions (FAQ)
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Q: What is the difference between a globe valve and a gate valve for marine use?
A: A globe valve provides better throttling and flow control with a linear motion disc, while a gate valve is primarily for on/off service. Our JIS F7305 globe valve is ideal for applications requiring regulation, such as cooling water lines or fuel systems. -
Q: Is the 316L trim suitable for seawater?
A: Yes, 316L stainless steel offers excellent resistance to chloride-induced corrosion, making it a common choice for seawater and brackish water systems. However, for extreme conditions, a higher-grade material like duplex stainless steel can be provided as an option. -
Q: Does the valve come with a Mill Test Report for the body material as well?
A: Yes, the Mill Test Report (MTR) includes certified chemical and mechanical properties for both the ductile iron body and the 316L trim materials, ensuring full traceability. -
Q: What pressure testing is performed before shipment?
A: Every valve undergoes a hydrostatic shell test at 1.5 times the rated pressure (15K) and a seat leakage test at the rated pressure. Results are recorded and available upon request. -
Q: Can the valve be supplied with a locking device or gear operator?
A: Absolutely. We offer optional accessories such as chain wheels, gear operators, limit switches, and lockable handwheels. Please specify your requirements when ordering. -
Q: What is the typical lead time for standard sizes?
A: For popular sizes (DN50 to DN200), stock items can be shipped within 7-15 working days. Custom sizes or special materials may require 20-45 days depending on complexity. -
Q: Are flanges available to other standards like ANSI or DIN?
A: Yes, we can customize the flanges to ANSI B16.5, DIN 2501, or other standards. The JIS F7305 valve body can be adapted with different flange dimensions as per your project requirements. -
Q: What is the warranty policy?
A: We offer a standard 12-month warranty from the date of delivery, covering defects in material and workmanship. Extended warranty options are available for bulk orders.
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