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Help CenterMarine Check Valve 425℃, Carbon Steel, Mill Test Report Included, Standard Compliant
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Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine Check Valve, engineered to withstand extreme operating temperatures of up to 425℃. Made from premium Carbon Steel, this valve is designed for demanding marine environments where reliability and safety are paramount. With Mill Test Report included and full compliance with international standards, our check valve ensures leakage-free performance and long service life. As a trusted manufacturer since 2016, we deliver valves that meet the rigorous requirements of global shipyards and offshore projects.
Key Features & Technical Specifications
- High Temperature Resistance: Rated for continuous operation at 425℃, suitable for steam, hot oil, and high-temperature water systems.
- Superior Material: Body and disc made from Carbon Steel (ASTM A216 WCB/WCC) with optional stainless steel trim for enhanced corrosion resistance.
- Standard Compliance: Designed and tested per API 6D, ASME B16.34, and BS 1868, ensuring interchangeability and global acceptance.
- Mill Test Report: Each valve is supplied with a 3.1 certificate (EN 10204) traceable to the heat number, providing full material and mechanical property data.
- Leak-Tight Sealing: Metal-to-metal or optional soft seat (available upon request) guarantees zero backflow.
- End Connections: Flanged (RF, RTJ), threaded (NPT/BSP), or butt-weld ends to match your piping system.
- Easy Maintenance: Swing check design allows quick access to internal parts without removing the valve from the line.
| Parameter | Value |
|---|---|
| Size Range | DN15 – DN600 (1/2″ – 24″) |
| Pressure Class | Class 150 – Class 600 (PN10 – PN100) |
| Working Temperature | -29℃ to 425℃ |
| Body Material | Carbon Steel ASTM A216 WCB |
| Disc Material | Carbon Steel / 13Cr / SS304 (optional) |
| Seat Material | Metal / PTFE / Nylon (customizable) |
| Testing Standard | API 598 / ISO 5208 Rate A |
Customer Benefits
- Reliable backflow prevention in critical marine systems such as ballast, cooling water, fuel oil, and fire-fighting lines.
- Reduced downtime thanks to rugged carbon steel construction that resists thermal fatigue and mechanical wear.
- Full traceability with Mill Test Report that speeds up project approvals and third-party inspections.
- Global compatibility – flanges drilled to ASME B16.5, ANSI, DIN, or JIS standards (customized per request).
- Warranty coverage – 18 months from shipment date or 12 months from installation, whichever comes first.
Why Choose Shanghai Zhibang Valve?
Since 2016, we have been a specialized manufacturer of industrial valves, exporting over US$1 Million – US$1.5 Million annually to markets across North America, South America, Europe, Africa, Oceania, and Asia. Our valves are manufactured under an ISO9001:2015 quality management system, ensuring consistent product quality. We ship from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, providing flexible logistics solutions. With a dedicated team of engineers and sales professionals, we offer technical support, custom designs, and after-sales service. Choose our Marine Check Valve for a cost-effective, high-performance solution that meets the demanding standards of the marine industry.
Frequently Asked Questions
Q1: Is the Mill Test Report included with every valve?
A: Yes, each Marine Check Valve is supplied with a Mill Test Report (3.1 certificate per EN 10204) that includes chemical composition, mechanical properties, and heat number traceability.
Q2: Can this valve be used for steam service at 425℃?
A: Absolutely. The carbon steel body and metal seat are designed for high-temperature steam, hot oil, and thermal fluid systems up to 425℃. For superheated steam applications, please confirm your pressure rating with our technical team.
Q3: What standards does this valve comply with?
A: It is designed to API 6D, ASME B16.34, and BS 1868. Flanges conform to ASME B16.5, and testing follows API 598 or ISO 5208 Rate A.
Q4: What end connections are available?
A: We offer flanged (RF, RTJ), threaded (NPT/BSP), and butt-weld ends. Other types such as socket weld or grooved ends are available upon request.
Q5: Is the valve suitable for seawater?
A: Carbon steel is not corrosion-resistant in seawater. However, we can provide stainless steel trim or fully stainless steel/duplex versions for marine water applications. Please consult with us for your specific medium.
Q6: What is the standard color of the valve?
A: Standard color is blue (RAL 5015) or red (RAL 3000). Custom RAL colors can be applied based on quantity.
Q7: How do I install the check valve correctly?
A: The valve must be installed with the flow arrow pointing in the correct direction. For swing check valves, ensure the disc hinge is in the upper position when the pipe is horizontal. Refer to the installation manual included in the package.
Q8: What is your minimum order quantity (MOQ)?
A: MOQ is 1 piece for standard sizes. For custom sizes or special materials, please contact our sales team.
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