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Help CenterMarine High Pressure Globe Check Valve, 316 Stainless Steel, PN16, DN25, Flanged, Rising Stem, Used in Seawater Systems
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a professional manufacturer specializing in marine and industrial valves. Our Marine High Pressure Globe Check Valve (316 Stainless Steel, PN16, DN25, Flanged, Rising Stem) is engineered specifically for demanding seawater systems. Combining the functions of a globe valve and a check valve into one robust unit, it delivers reliable flow control and backflow prevention, reducing installation complexity and maintenance costs. With an annual export value of US$1–1.5 million and ISO9001-certified quality management, we ensure each valve meets international marine standards.
This valve is designed to withstand the corrosive nature of seawater while handling high-pressure conditions up to PN16 (16 bar). The rising stem provides clear visual indication of the valve position, and the flanged connection (DN25) allows easy integration into existing piping systems. Whether used in shipboard ballast systems, offshore platforms, or coastal desalination plants, our globe check valve delivers exceptional durability and performance.
Key Features & Technical Specifications
- Material Excellence: All wetted parts are made of 316 stainless steel, offering superior resistance to chloride-induced corrosion and pitting in seawater environments.
- Combined Functionality: Integrates globe valve (throttling/stop) and check valve (automatic backflow prevention) in one body, saving space and reducing potential leak points.
- Rising Stem Design: The stem rises as the valve opens, giving operators a clear visual confirmation of the open/closed status – essential for marine safety.
- Flanged Connection: Standard flanged ends (DN25, PN16) comply with common marine piping specifications, simplifying installation and maintenance.
- High Pressure Rating: Rated PN16 (16 bar @ ambient temperature), suitable for high-pressure seawater systems.
- Direct Flow Path: The globe check design minimizes pressure drop while providing excellent throttling characteristics.
- Corrosion Resistant Trim: Optional stellite or PTFE seat sealing available for extended service life in harsh media.
- Low Maintenance: Robust construction and self-cleaning action of the disc reduce the need for frequent maintenance.
| Parameter | Specification |
|---|---|
| Valve Type | Globe Check Valve (Combination) |
| Body Material | 316 Stainless Steel (CF8M) |
| Pressure Rating | PN16 (16 bar / 232 psi) |
| Nominal Diameter | DN25 (1 inch) |
| Connection | Flanged (RF, according to DIN/ANSI standards, customizable) |
| Stem Type | Rising Stem, Outside Screw & Yoke (OS&Y) |
| Working Temperature | -20°C to +150°C (depends on sealing material) |
| Media | Seawater, brine, fresh water, air, oil (with proper sealing) |
| Sealing Mechanism | Metal-to-metal or optional soft seal (PTFE, Nylon) |
| Standard/Certification | ISO9001 (company), design per GB/T, DIN, or ASME |
Advantages for Your Seawater System
The globe check valve offers distinct benefits over separate globe and check valves:
- Space Saving: One valve body instead of two reduces footprint in tight marine engine rooms.
- Reduced Leak Paths: Fewer flanged joints mean lower risk of seawater leakage.
- Cost Efficiency: Lower procurement and installation costs compared to buying two valves.
- Simplified Inventory: One spare part covers both stopping and check functions.
- Enhanced Reliability: The integrated design eliminates the need for additional pipe supports and alignment.
Our valve is subjected to rigorous hydrostatic testing and shell testing at 1.5 times the rated pressure, ensuring leak-tight performance. Each unit is supplied with a test certificate and serial number for traceability.
Trust & Credibility
Since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. has been committed to delivering high-quality valves for marine and industrial applications. Our ISO9001-certified quality management system covers design, manufacturing, and after-sales service. We export annually between US$1 million and US$1.5 million, serving customers across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. Our valves are shipped from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery worldwide.
We understand the critical nature of seawater systems – failure is not an option. That’s why we back every globe check valve with a comprehensive warranty and technical support. Our engineers are available to assist with selection, installation, and maintenance advice. Choose Shanghai Zhibang for reliable, cost-effective, and durable marine valves.
Frequently Asked Questions (FAQ)
1. What is the difference between a globe check valve and a standard check valve?
A globe check valve combines the functions of a globe valve (stopping and throttling flow) and a check valve (preventing backflow). Unlike a standard check valve, it can be manually closed to isolate the line, making it ideal for applications where both control and backflow prevention are needed.
2. Can this valve be used for other media besides seawater?
Yes, the 316 stainless steel construction makes it suitable for many corrosive fluids such as brackish water, brine, some chemicals, and fresh water. However, for aggressive media like high-concentration acids, please consult us for material compatibility advice.
3. What is the maximum working temperature?
With standard metal-to-metal sealing, the temperature range is -20°C to +150°C. If soft seals (PTFE, Nylon) are used, the maximum temperature may be lower (typically around 120°C). We can customize sealing materials based on your specific temperature requirements.
4. Is the rising stem a safety advantage?
Absolutely. The rising stem provides a visual indication of the valve position – when the stem is fully raised, the valve is open; when lowered, it’s closed. This is especially valuable in marine environments where operators need to quickly confirm valve status without relying solely on indicators.
5. What flange standards are available?
Standard flanges are designed to DIN (PN16) specifications. We can also manufacture according to ANSI B16.5 (Class 150), JIS, or GB standards upon request. Please specify your required standard when ordering.
6. How do I install and maintain this valve?
Install the valve in the correct flow direction (indicated by an arrow on the body). Use appropriate gaskets and torque the flange bolts evenly. Periodic inspection of the stem packing and seat sealing is recommended. For maintenance, the rising stem design allows easy replacement of packing without removing the valve from the line.
7. What certifications do you provide?
Our manufacturing facility is ISO9001 certified. Each valve comes with a material certificate, hydrostatic test report, and a certificate of conformance. Additional third-party inspection (e.g., by DNV, LR, or ABS) can be arranged at an extra cost.
8. Do you offer custom sizes or higher pressure ratings?
Yes, we can customize the valve size (DN15 to DN300) and pressure ratings (PN10, PN16, PN25, etc.) based on your requirements. Contact our sales team with your specifications.
For more details or to place an order, please contact Shanghai Zhibang Valve Manufacture Co., Ltd. – your trusted partner in marine valve solutions.
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