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Bronze Check Valve for Marine Seawater Circulation Pipeline, Ideal for Offshore Platform Pumping Systems
Product Spotlights
Corrosion-resistant bronze check valve for seawater circulation and offshore pumping systems. Features low-pressure drop, non-slam disc, multiple connection types (flanged/threaded/wafer), and ISO9001 certification. Customizable sizes, pressure ratings up to Class300, and temperature range -20°C to +220°C. Backed by Shanghai Zhibang's 8+ years of export experience to 15+ countries.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Bronze (C95800 / C95500)
Standard:
Other, ISO9001:2015, designed per API 602 / BS 1868
Function:
Other, Prevents backflow
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Bronze (C95800 / C95500)
Standard
Other, ISO9001:2015, designed per API 602 / BS 1868
Function
Other, Prevents backflow
Connection Type
Flanged, Threaded, Wafer (optional)
Nominal Diameter (DN)
DN15 – DN600 (available upon request)
Pressure Rating
PN10 / PN16 / PN25 / Class150 / Class300
Operating Temperature
-20°C to +220°C (customizable for high-temperature seawater)
Applicable Medium
Seawater, brine, cooling water, oil & gas
Color
Natural bronze (uncoated) or optional anti-corrosion coating
Shanghai Zhibang Valve Manufacture Co., Ltd – a dedicated manufacturer since 2016 with an annual export value of US$1–1.5 million – proudly presents our Bronze Check Valve for Marine Seawater Circulation Pipeline. Designed specifically for demanding offshore environments, this valve ensures reliable backflow prevention in seawater circulation systems, pump discharge lines, and offshore platform piping. Its robust bronze construction offers superior corrosion resistance to saltwater, while the streamlined internal design minimizes pressure loss and water hammer. Whether you are building a new vessel or upgrading an existing offshore pumping system, our bronze check valve delivers long-lasting performance backed by ISO9001 certified quality.
Product Features & Technical Advantages
- Corrosion-Resistant Bronze Body – Made from high-strength bronze (C95800/C95500), ideal for seawater and brackish water applications, with excellent resistance to dezincification and pitting.
- Non-Slam Disc Design – The spring-assisted or gravity-closing disc prevents slamming and reduces noise, protecting pumps and pipelines from sudden pressure surges.
- Low Flow Resistance – Full-bore or reduced-bore options available; the streamlined flow path ensures minimal head loss, improving system energy efficiency.
- Multiple Connection Types – Available in flanged, threaded, or wafer style to suit existing piping configurations. Flanges meet ANSI, DIN, JIS, or GB standards (customizable).
- Wide Pressure & Temperature Range – Rated for PN10 to PN25 (Class150 to Class300) and operating temperatures from -20°C to +220°C, with high-temperature variants upon request.
- Easy Maintenance – Top-entry or threaded bonnet design simplifies inspection and disc replacement without removing the valve from the pipeline.
- Anti-Corrosion Options – Standard natural bronze finish; optional epoxy coating or nickel plating for additional protection in aggressive seawater environments.
- Tested & Certified – Each valve undergoes hydrostatic shell testing (1.5X rated pressure) and seat leakage testing (0.1X rated pressure) per ISO 5208 / API 598.
Technical Specifications (Typical Range)
| Parameter | Value / Options |
| Material | Bronze C95800 / C95500 (ASTM B148) |
| Nominal Diameter | DN15 – DN600 (½" – 24") |
| Pressure Rating | PN10 / PN16 / PN25 / Class150 / Class300 |
| Operating Temperature | -20°C to +220°C (high-temp version up to 350°C available) |
| Seat Material | Bronze, PTFE, or EPDM (seawater-resistant) |
| Disc Type | Swing, lift, or spring-loaded (wafer) – customizable |
| Connection End | Flanged (ANSI/DIN/JIS/GB), Threaded (NPT/BSP), Wafer |
| Testing Standard | ISO 5208 / API 598 (Class A or B leakage rate) |
Why Choose Shanghai Zhibang Valve?
As an ISO9001:2015 certified manufacturer, we have supplied bronze check valves to over 15 countries across North America, Europe, Southeast Asia, Oceania, and the Middle East. Our valves are used in marine vessels, offshore platforms, desalination plants, and coastal pumping stations. Every valve is individually tested before shipment, and we offer a 12-month warranty against manufacturing defects. With export ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure fast and reliable delivery worldwide. Our team of experienced engineers is available for technical consultation, custom designs, and after-sales support.
Frequently Asked Questions
-
Q: Can this bronze check valve be used in horizontal and vertical pipelines?
A: Yes, our swing and spring-loaded check valves are suitable for horizontal or vertical installation. For vertical lines, please specify the orientation so we can adjust the spring tension or disc gravity accordingly. -
Q: What is the maximum pressure rating for a 4-inch bronze check valve?
A: For a 4-inch (DN100) valve, standard pressure ratings are up to PN25 (Class150). Higher ratings (Class300) are available for smaller sizes or upon request. -
Q: Do you offer custom sizes or non-standard connections?
A: Absolutely. We can customize the valve length, flange drillings, and end connections to match your existing piping. Minimum order quantity may apply for custom designs. -
Q: How does the bronze material compare to stainless steel for seawater?
A: Bronze offers excellent corrosion resistance in seawater, often comparable to 316 stainless steel. It is also more cost-effective and less prone to chloride stress corrosion cracking. For extremely aggressive environments, we can apply an additional protective coating. -
Q: What is the typical lead time for standard valves?
A: For standard sizes (DN15–DN300), lead time is 15–25 working days. Large diameters or custom designs may require 30–45 working days. We also maintain a small stock for urgent orders. -
Q: Do you provide a hydrostatic test certificate?
A: Yes, a hydrostatic test certificate is included with each shipment. A third-party inspection (e.g., by Lloyd's or DNV) is available at an additional cost. -
Q: Is the valve suitable for high-temperature seawater (above 80°C)?
A: Standard temperature range is up to 220°C. For high-temperature seawater applications, we recommend using a PTFE seat and a high-temperature spring. Please contact our technical team for a specific design. -
Q: Can I get a sample valve before placing a bulk order?
A: Yes, sample orders are welcome. We can provide a sample with a lead time of 10–15 days, and the cost is deducted from the first bulk order. Please contact us for details.
Trust Shanghai Zhibang Valve – your reliable partner for marine and offshore fluid control solutions. Leveraging our ISO9001 quality system, experienced team, and global shipping network, we deliver bronze check valves that meet the highest standards of durability and performance. Contact us today for a quote or technical consultation!
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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