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Help CenterSeawater System Marine Globe Check Valve 316L Stainless Steel DN80 PN16 for Ship Hull Piping
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Shanghai Zhibang Valve Manufacture Co., Ltd is proud to present our Seawater System Marine Globe Check Valve, precision-engineered from 316L stainless steel in size DN80 with PN16 rating. Designed specifically for ship hull piping and seawater applications, this valve delivers exceptional corrosion resistance, reliable backflow prevention, and long service life in demanding marine environments. As a manufacturer established in 2016 with annual export value exceeding USD 1 million, we combine advanced production capabilities with global market experience to offer you a superior product that meets rigorous marine standards.
Key Features & Technical Specifications
- Premium Material: Manufactured from high-quality 316L stainless steel (UNS S31603), offering superior resistance to chloride stress corrosion cracking and pitting in seawater.
- Pressure & Temperature Rating: Rated PN16 (16 bar / 232 psi) at ambient temperature; suitable for elevated temperatures up to 200°C (392°F) with derating.
- Globe Check Valve Design: Combines the flow regulation of a globe valve with the automatic shut-off function of a check valve, preventing reverse flow while allowing manual closure if needed.
- Flanged End Connections: Standard flanges conform to ASME B16.5 Class 150, ensuring easy installation and leak-proof sealing in ship piping systems.
- Corrosion Protection: 316L stainless steel provides excellent resistance to seawater, brine, and acidic marine environments, reducing maintenance costs.
- Low Pressure Drop: Optimized internal flow path minimizes head loss, improving system efficiency.
- Versatile Applications: Ideal for cooling water lines, ballast systems, fire-fighting piping, bilge pumping, and other ship hull seawater circuits.
| Parameter | Specification |
|---|---|
| Size (Nominal Diameter) | DN80 (3 inch) |
| Pressure Rating | PN16 (16 bar / 232 psi) |
| Material | 316L Stainless Steel (CF3M casting or forged) |
| End Connection | Flanged (ASME B16.5 Class 150) |
| Design Standard | ISO 9001, API 602 (applicable), BS 1868 |
| Testing & Inspection | Hydrostatic shell test, seat leakage test per API 598 |
| Operating Temperature | -29°C to +200°C (-20°F to +392°F) |
Customer Benefits
Choosing our Seawater System Marine Globe Check Valve brings tangible advantages to your vessel operations:
- Enhanced Durability: 316L stainless steel withstands the corrosive attack of seawater, extending valve lifespan and reducing replacement frequency.
- Reduced Downtime: Reliable sealing and smooth operation minimize maintenance interruptions in critical ship systems.
- Cost-Efficiency: Lower total cost of ownership through reduced corrosion-related failures and longer service intervals.
- Ease of Installation: Standard flanged connections allow quick retrofitting into existing piping layouts.
- Versatility: Suitable for both above-deck and below-deck marine piping, including high-salinity areas.
Why Choose Shanghai Zhibang Valve?
As a dedicated manufacturer with ISO9001 certification, we have been serving global marine and industrial markets since 2016. Our annual export value of USD 1-1.5 million reflects the trust placed in us by clients across North America, South America, Europe, Asia, Africa, and Oceania. We ship from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery. Our in-house quality control and experienced engineering team guarantee that every valve meets strict marine standards. Partner with us for reliable seawater piping solutions that keep your fleet running smoothly.
Ready to upgrade your ship's seawater system? Contact our sales team for a quote or technical consultation. We offer customizable options upon request.
Frequently Asked Questions (FAQ)
A: A globe check valve combines the flow path of a globe valve with an automatic disc that closes when reverse flow occurs. It provides better sealing and can also be used as a manual shut-off valve if equipped with a stem, whereas a swing check valve only prevents backflow with a hinged disc.
A: Yes, the 316L material is suitable for fresh water, oil, gas, and many chemical fluids. However, its primary design is optimized for seawater environments where corrosion resistance is critical.
A: Standard production is flanged. Custom configurations (e.g., butt weld ends) are available upon request; please contact our sales team for lead times and minimum order quantities.
A: For standard DN80 PN16 316L globe check valves, we usually stock or can produce within 15-25 working days depending on quantity. Expedited options may be discussed with our logistics team.
A: Yes, each valve is hydrostatically tested and a test certificate (conforming to API 598) is included. Additional third-party inspection can be arranged.
A: Our valves are designed with reference to common marine standards (e.g., ABS, DNV, Lloyd's) but we do not hold specific class certificates unless requested. We can provide material certificates and test reports to support your classification process.
A: The PN16 rating is for ambient temperature. At 200°C (392°F), the allowable pressure derates to approximately 11 bar (160 psi). Please consult the pressure-temperature chart for exact values.
A: This globe check valve can be installed in horizontal or vertical pipelines with upward flow. For vertical downward flow, a spring-loaded design may be preferred. Please advise your installation orientation when ordering.
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