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Help CenterJIS F7305 5K Globe Valve for Ship Freshwater Systems Cast Iron DN50-DN200 Handwheel
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Shanghai Zhibang Valve Manufacture Co., Ltd presents the JIS F7305 5K Globe Valve, specifically designed for ship freshwater systems. As a manufacturer established in 2016 with an annual export value of US$1–1.5 million, we combine strict quality control (ISO9001 certified) with competitive pricing. This cast iron globe valve covers a wide size range from DN50 to DN200 and is operated by a durable handwheel, ensuring reliable flow regulation in demanding marine environments.
The valve meets the Japanese Industrial Standard JIS F7305, which specifies the design, dimensions, and pressure rating for shipboard valves. Its 5K pressure class is suitable for low to medium pressure freshwater lines, commonly found in cooling systems, domestic water supply, and ballast systems. The cast iron body provides excellent corrosion resistance in freshwater applications, while the handwheel allows for precise manual control of flow rate.
Key Features & Technical Specifications
- Standard Compliance: JIS F7305 – Guarantees interchangeability and reliability for shipboard installations.
- Pressure Rating: 5K – Rated for maximum working pressure up to 0.5 MPa (approx. 72 psi) at ambient temperature.
- Material: Cast Iron (gray iron or ductile iron optional) – Offers strong mechanical properties and good wear resistance in freshwater.
- Size Range: DN50 to DN200 (2″ to 8″) – Covers common pipeline diameters in marine freshwater systems.
- Connection: Flanged ends per JIS B2238 – Easy to install and maintain with standard bolt patterns.
- Operation: Handwheel with rising stem – Clear visual indication of valve position; smooth turning torque.
- Seat Seal: Metal-to-metal or optional soft seal (PTFE) – Provides tight shut-off and low leakage.
- Temperature Range: -10°C to +120°C (for cast iron) – Suitable for typical ship freshwater temperatures.
| Parameter | Value |
|---|---|
| Standard | JIS F7305 |
| Pressure Class | 5K |
| Body Material | Cast Iron (GG25 or equivalent) |
| Nominal Diameter | DN50 / DN80 / DN100 / DN150 / DN200 |
| Flange Standard | JIS B2238 (10K/5K compatible) |
| Stem Material | Stainless Steel or Brass |
| Handwheel Material | Cast Iron or Ductile Iron |
| Test Pressure (Shell) | 0.75 MPa |
| Test Pressure (Seat) | 0.55 MPa |
Advantages for Shipbuilders & Operators
Each JIS F7305 Globe Valve is engineered to provide long service life in marine environments. The cast iron body resists corrosion from freshwater, and the rising stem design gives operators clear visual feedback of the valve position. The handwheel is ergonomically sized for easy turning even when wearing gloves. Furthermore, the flanged connection conforms to JIS B2238, ensuring compatibility with existing piping systems on ships built to Japanese standards.
Our valves undergo 100% hydrostatic testing before shipment, guaranteeing zero shell leakage and low seat leakage. With ISO9001 quality management, we ensure consistent product quality across every batch. We also offer customization options such as extended stems, locking devices, or gear operators for larger sizes (DN150 & DN200) upon request.
Trusted by Global Markets
Since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd has been serving customers in over 15 regions including North America, Europe, Southeast Asia, and the Middle East. Our annual export value of US$1–1.5 million reflects our commitment to reliable delivery and competitive pricing. All products are shipped from major Chinese ports (Shanghai, Guangzhou, Hong Kong, Beijing), with fast lead times and careful packaging to prevent damage during transit.
We invite you to experience the quality of our JIS F7305 Globe Valve for your ship freshwater systems. For technical inquiries, pricing, or sample orders, please contact our sales team. Whether you need a standard DN50 valve or a larger DN200 unit, we are ready to support your project.
Frequently Asked Questions
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Q: Is this valve suitable for seawater?
A: This valve is primarily designed for freshwater systems. For seawater applications, we recommend a bronze or stainless steel valve to avoid accelerated corrosion. Contact us for suitable alternatives. -
Q: What is the difference between 5K and 10K pressure classes?
A: 5K (0.5 MPa) is for lower pressure systems, while 10K (1.0 MPa) is for higher pressure. This valve is rated 5K, which is typical for ship freshwater lines. -
Q: Can I get a soft-seat version for bubble-tight shut-off?
A: Yes, we offer optional PTFE or NBR soft seat inserts. Please specify when ordering. -
Q: What flange standard does this valve use?
A: It uses JIS B2238 flanges (10K bolt pattern, compatible with 5K). Also available with ANSI or DIN flanges upon request. -
Q: Do you provide a gearbox for larger sizes?
A: Yes, for DN150 and DN200, we can supply a worm gear actuator instead of a direct handwheel. Please inquire. -
Q: What is the delivery time for a standard order?
A: Typically 30–45 days after order confirmation, depending on quantity. Expedited options are available. -
Q: Is the valve certified to any ship classification society?
A: Our standard valves meet JIS F7305. For classification society certification (e.g., NK, BV, ABS), we can arrange additional inspection at an extra cost. -
Q: How do I maintain the valve?
A: Regular inspection of the handwheel and stem seal is recommended. Replace packing if leakage occurs. Lubricate the stem thread periodically.
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