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Home > Industrial Equipment & Components > Valve > Check Valve > Bronze Check Valve for Marine Seawater Circulation Pipeline, PN16 Flanged, 316SS Spring, DN50-DN200
Bronze Check Valve for Marine Seawater Circulation Pipeline, PN16 Flanged, 316SS Spring, DN50-DN200
Product Spotlights
Bronze check valve with PN16 flanged ends, 316SS spring, and DN50-DN200 sizes. Designed for marine seawater circulation, offering superior corrosion resistance, reliable backflow prevention, low maintenance, and ISO9001 quality. Ideal for shipbuilding, offshore, and coastal systems.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Bronze (Cast Bronze)
Application:
Other, Marine Seawater Circulation
Pressure Rating:
PN16
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Bronze (Cast Bronze)
Application
Other, Marine Seawater Circulation
Pressure Rating
PN16
Connection
Flanged
Spring Material
316 Stainless Steel
Size Range
DN50 – DN200
Valve Type
Swing Check Valve
Finish
Natural Bronze
Certification
ISO9001
Shanghai Zhibang Valve Manufacture Co., Ltd. (established in 2016) is a professional manufacturer specializing in high-quality valves for marine and industrial applications. With an annual export value of US$1 million – US$1.5 million, we have supplied reliable products to markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our Bronze Check Valve for Marine Seawater Circulation Pipeline is designed to meet the demanding requirements of seawater systems, featuring a robust PN16 flanged connection, a 316 stainless steel spring, and sizes ranging from DN50 to DN200. This valve delivers exceptional corrosion resistance, long service life, and stable performance, making it the trusted choice for shipbuilding, offshore platforms, and coastal seawater handling systems.
Key Features & Technical Specifications
- Superior Corrosion Resistance: The bronze body (cast bronze, e.g., CuSn5Zn5Pb5) provides excellent resistance to seawater, salt spray, and other corrosive media. The 316 stainless steel spring offers superior pitting and crevice corrosion resistance, ensuring long-term reliability in marine environments.
- PN16 Pressure Rating: Designed for a nominal pressure of 16 bar (PN16), suitable for typical seawater circulation systems in ships and coastal facilities. The valve body and flanges are cast and machined to meet international flange standards (e.g., EN 1092, DIN 2501).
- Flanged Connection: Easy to install and maintain. The flanged ends allow secure bolting to pipeline flanges, reducing leakage risks and simplifying system integration. Available in raised face (RF) or flat face (FF) as per customer requirements.
- Wide Size Range: DN50, DN65, DN80, DN100, DN125, DN150, DN200. Each size is precisely machined to ensure tight sealing and smooth operation. The swing check valve design minimizes pressure drop and allows full flow when open.
- Low Maintenance Design: The spring-assisted closing mechanism ensures fast response and prevents water hammer. The valve cover is easily removable for inspection or cleaning. No special tools required for routine maintenance.
- ISO9001 Certified Quality: Our manufacturing facility is ISO9001 certified (2016), ensuring consistent quality control from raw material inspection to final testing. Each valve is hydrostatically tested before shipment.
Technical Parameters
| Parameter | Value |
| Body Material | Bronze (Cast Bronze) |
| Spring Material | 316 Stainless Steel (AISI 316) |
| Pressure Rating | PN16 (16 bar @ 20°C) |
| Size Range | DN50 – DN200 (2" – 8") |
| Connection Type | Flanged (EN 1092 / DIN 2501) |
| Operating Temperature | -10°C to +80°C (standard) |
| Test Pressure (Shell) | 1.5 × PN = 24 bar |
| Test Pressure (Seat) | 1.1 × PN = 17.6 bar |
| Application | Marine seawater circulation, ballast systems, cooling water, etc. |
Benefits for Your Operations
- Extended Service Life: The combination of bronze and 316SS resists galvanic corrosion and dezincification, reducing replacement frequency and downtime.
- Reliable Flow Control: The spring-assisted disc ensures quick closing, preventing backflow and protecting pumps and pipelines from damage.
- Easy Installation: Flanged connections conform to international standards, allowing direct retrofit into existing systems. Custom flange drilling patterns are available upon request.
- Cost-Effective: Competitive pricing without compromising quality. Our direct manufacturing model ensures lower costs and faster delivery.
- Global Support: With shipping ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we can deliver to any major port worldwide. Our experienced sales team provides technical support and after-sales service.
Trust & Credibility
Since our establishment in 2016, Shanghai Zhibang Valve has been committed to producing high-quality valves for marine and industrial applications. Our annual export value of US$1 million – US$1.5 million reflects the trust our global customers place in our products. We hold ISO9001 certification and implement strict quality control throughout production. Our valves have been exported to North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and other regions. We are confident that our Bronze Check Valve will meet and exceed your expectations. For inquiries, customization, or to place an order, please contact our sales team today.
Frequently Asked Questions
- Q: Is this check valve suitable for seawater? A: Yes, it is specifically designed for marine seawater circulation. The bronze body and 316 stainless steel spring offer excellent resistance to seawater corrosion.
- Q: What is the maximum working pressure? A: The valve is rated PN16 (16 bar at 20°C). Temperature derating may apply; please consult the datasheet for high-temperature applications.
- Q: Can I get a size other than DN50-DN200? A: Our standard sizes are DN50 to DN200. Custom sizes (e.g., DN40 or DN250) are available on request, subject to engineering review.
- Q: What is the spring material? Is it replaceable? A: The spring is made of 316 stainless steel. It is replaceable; the valve cover can be opened to access the internal components. Replacement springs are available as spare parts.
- Q: Does the valve come with flange gaskets? A: No, flange gaskets are not included. We recommend using a suitable gasket (e.g., compressed fiber or spiral wound) for sealing.
- Q: What is the lead time for an order? A: For standard sizes, lead time is typically 15–25 working days. Custom orders may require 30–40 working days, depending on quantity and specifications.
- Q: Do you provide test certificates? A: Yes, we provide material certificates, hydrostatic test reports, and ISO9001 quality certificates upon request.
- Q: Can the valve be installed vertically? A: The swing check valve is designed for horizontal installation with the hinge pin in the vertical position. Vertical installation (flow upward) is possible with proper spring tension; please consult our technical team for guidance.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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