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Help CenterJIS F7305 5K Marine Cast Iron Globe Valve DN50-DN200 Rising Stem Flanged Handwheel
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Shanghai Zhibang Valve Manufacture Co., Ltd. takes pride in offering the JIS F7305 5K Marine Cast Iron Globe Valve with rising stem, flanged ends, and handwheel operation. As a manufacturer established in 2016 with an annual export value between US$1 million and US$1.5 million and ISO9001 certification, we combine precision engineering with cost-effective production. This valve series is specifically designed for marine and industrial applications where reliable flow control, durability, and compliance with Japanese Industrial Standards (JIS) are essential. With sizes ranging from DN50 to DN200, these valves provide a robust solution for seawater, fresh water, steam, and oil systems.
Our globe valves feature a cast iron body that offers excellent corrosion resistance in marine environments, coupled with a rising stem design that gives operators clear visual indication of valve position. The flanged connections conform to JIS B2238 standard, ensuring leak-tight installation. Each valve undergoes rigorous quality checks in our Shanghai facility before shipment to global markets including North America, South America, Europe, Southeast Asia, and the Middle East.
Key Features & Advantages
- JIS F7305 Compliant: Manufactured strictly in accordance with JIS F7305 standard, ensuring compatibility with Japanese marine and industrial systems.
- Cast Iron Construction: High-quality gray cast iron (e.g., FC200 or equivalent) provides strength and cost efficiency; optional coatings available for enhanced corrosion resistance.
- Rising Stem Design: The stem rises visibly as the handwheel is turned, allowing easy identification of open/closed status. Stem threading is precision-machined for smooth operation.
- Flanged Ends: Flat-face flanges drilled to JIS B2238 5K drilling pattern, suitable for bolting to matching flanges in piping systems.
- Handwheel Operation: Sturdy handwheel with a comfortable grip enables manual throttling or shut-off. The handwheel is keyed to prevent slippage.
- Pressure Rating 5K: Designed for nominal pressure rating of 5 kg/cm² (approx. 0.5 MPa) at ambient temperature, suitable for low to medium pressure applications.
- Wide Size Range DN50-DN200: Available in 2" to 8" nominal bore sizes to accommodate various pipeline diameters.
- Marine Application: Tested for seawater resistance and vibration tolerance, commonly used in shipboard systems (cooling, ballast, bilge).
Technical Specifications
| Standard | JIS F7305 |
| Pressure Rating | 5K (0.5 MPa max. working pressure) |
| Body Material | Cast Iron (FC200 or equivalent) |
| Trim Material | Brass/Bronze (disc, seat ring) – optional stainless steel upon request |
| Flange Drilling | JIS B2238 5K |
| Operation | Handwheel (rising stem, outside screw & yoke – OS&Y) |
| Suitable Media | Water, steam, oil, seawater (check compatibility) |
| Temperature Range | -10°C to 150°C (typical), consult for higher temperatures |
Detailed Product Description
The JIS F7305 5K Marine Cast Iron Globe Valve is engineered for precise throttling and shut-off in piping systems where flow regulation is critical. The globe valve's linear motion disc (poppet) moves perpendicular to the seat, offering excellent flow control characteristics. Key components include:
- Body & Bonnet: Cast iron with a bolted bonnet for easy maintenance. The bonnet gasket ensures a tight seal.
- Disc & Seat: Typically machined brass for corrosion resistance; the disc is guided to ensure proper alignment. Renewable seat rings are available.
- Stem & Handwheel: Rising stem with acme threads. The handwheel is cast iron or ductile iron, with a square or keyed connection to the stem nut.
- Packing Gland: Contains graphite or PTFE packing to prevent stem leakage; adjustable via gland bolts.
This valve is particularly favored in marine applications due to its robust construction, ability to handle fluctuating pressures, and straightforward maintenance. The rising stem provides a visual indication of valve position—especially useful when remote position indicators are not installed. Flanged connections simplify installation and removal for servicing.
Customer Benefits
- Reliable Flow Control: The globe valve design offers good throttling capability with minimal seat wear.
- Long Service Life: Quality cast iron body and corrosion-resistant trim ensure extended durability in marine environments.
- Easy Installation: Standard JIS B2238 flanges mate directly with existing JIS piping systems, reducing installation downtime.
- Clear Position Indication: Rising stem allows at-a-glance confirmation of valve status, enhancing operational safety.
- Cost-Effective: Cast iron provides an economical alternative to bronze or stainless steel valves while still meeting marine requirements in many applications.
- Customizable Options: Available with gear operators, extension stems, locking devices, or special coatings upon request.
Trust & Reliability
Shanghai Zhibang Valve Manufacture Co., Ltd. has been a dedicated valve manufacturer since 2016, with an annual export value exceeding US$1 million. Our ISO9001 quality management system ensures consistent product quality from raw material procurement to final inspection. We ship from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing, with flexible logistics to meet your delivery schedule. Our valves have reached markets across North America, South America, Europe, Asia, Africa, and Oceania, earning trust from shipyards, industrial plants, and engineering contractors. We are committed to providing reliable products at competitive prices, backed by after-sales support. Contact us today for a quote or technical consultation—we speak your language of quality and precision.
Frequently Asked Questions (FAQ)
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Q: What is the operating pressure and temperature limit of this globe valve?
A: The valve is designed for a nominal pressure of 5K (0.5 MPa) at ambient temperature. For temperatures up to 150°C, please consult our technical team for specific pressure-temperature ratings, as elevated temperatures may derate the pressure capability. -
Q: Can this valve be used for seawater applications?
A: Yes, it is suitable for seawater systems in marine environments. However, we recommend considering optional coatings or sacrificial anodes for prolonged exposure. For severe corrosion conditions, stainless steel trim is available as an option. -
Q: What flange facing standard does this valve use?
A: The flanges have flat faces (FF) according to JIS B2238 for 5K rating. If you require raised face (RF) or other facing, please inquire about custom options. -
Q: What materials are used for the disc and seat?
A: Standard trim is brass (disc and seat ring), which provides good corrosion resistance and wear properties. Optional stainless steel (SS304 or SS316) is available upon request for more demanding media. -
Q: How do I determine the correct size for my piping system?
A: Choose the valve size that matches your pipe nominal diameter (DN50 to DN200). Ensure the flange drilling pattern matches your mating flanges. Our technical sales team can assist with selection based on flow rate and pressure drop requirements. -
Q: Is the handwheel position indicator reliable?
A: Yes, the rising stem clearly shows whether the valve is open or closed. The handwheel rotates to raise or lower the stem, providing visual confirmation. For remote indication, you can add an extension stem or position sensor. -
Q: Do you offer any certification or test reports?
A: Yes, as an ISO9001 certified manufacturer, we can provide material certificates, pressure test reports, and a certificate of conformance. Third-party inspection can be arranged at additional cost. -
Q: What is the typical lead time for these valves?
A: Standard sizes and materials usually ship within 15–30 working days after order confirmation, depending on quantity. Urgent orders can be expedited. Please contact our sales team for current lead times.
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