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Help CenterFlanged Marine Check Valve For Fuel Oil System Carbon Steel Body DN15-DN200 PN1.6-6.4MPa
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Shanghai Zhibang Valve Manufacture Co., Ltd. presents our premium Flanged Marine Check Valve for Fuel Oil System. Engineered with a durable carbon steel body, this check valve is designed to withstand the demanding conditions of marine fuel oil applications. With sizes ranging from DN15 to DN200 and pressure ratings from PN1.6 to PN6.4 MPa, it provides reliable backflow prevention and ensures the safe, efficient operation of your fuel system. Our factory, established in 2016 and ISO9001 certified, combines precision manufacturing with rigorous quality control to deliver valves that meet international standards.
The check valve operates automatically, allowing forward flow while preventing reverse flow, protecting pumps, pipelines, and other equipment from damage. Its flanged connection simplifies installation and maintains a secure, leak-proof seal. The carbon steel body offers excellent strength and corrosion resistance in marine environments, and the valve is available with various seat/seal materials (NBR, PTFE, or metal) to match different fluid properties. Below is a quick overview of key specifications:
| Parameter | Value |
| Nominal Diameter | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200 |
| Pressure Rating | PN1.6 / PN2.5 / PN4.0 / PN6.4 MPa |
| Body Material | Carbon Steel (ASTM A216 WCB equivalent) |
| Connection | Flanged (RF / FF / RTJ optional) |
| Test Pressure | Shell: 1.5 x PN; Seat: 1.1 x PN |
| Working Temperature | -20°C to +150°C (higher with seal upgrade) |
| Applicable Media | Fuel oil, diesel, heavy oil, lubricating oil |
Product Features & Benefits:
- Robust Carbon Steel Body – Offers high tensile strength and good resistance to seawater corrosion when properly coated; suitable for harsh marine environments.
- Flanged Ends – Easy to install, maintain, and seal; compatible with standard pipe flanges (ANSI, DIN, JIS, etc.).
- Wide Size & Pressure Range – Covers DN15 to DN200 and PN1.6 to PN6.4, meeting most fuel oil system requirements on ships and offshore platforms.
- Low Pressure Drop – Streamlined internal design minimizes flow resistance, saving energy and reducing pumping costs.
- Non-Slam Operation – Optional soft closing mechanism or weighted disc prevents water hammer and noise.
- Customizable Seal Material – Choose from NBR for fuel oils, PTFE for high temperature/corrosive fluids, or metal-to-metal seal for severe conditions.
- ISO9001 Certified Quality – Each valve is tested for shell and seat leakage; materials are traceable and documented.
At Shanghai Zhibang Valve, we have been manufacturing marine valves since 2016, exporting to over 15 markets worldwide including North America, South America, Europe, Southeast Asia, and the Middle East. Our annual export value exceeds US$1 million, reflecting the trust our customers place in our products. We ship from major ports (Shanghai, Guangzhou, Hong Kong, Beijing) and offer flexible packing options (plywood crates, pallets, etc.). Our team provides technical support, installation guidance, and after-sales service to ensure your satisfaction. Whether you need a single valve or bulk order for a fleet, we are ready to serve.
Contact us today for a competitive quotation or to discuss your specific requirements. Choose Shanghai Zhibang Valve – your reliable partner for marine fuel oil system check valves.
Frequently Asked Questions (FAQ)
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Q: What is the maximum pressure rating for DN200 size?
A: For DN200, the standard rating is PN1.6 to PN4.0MPa. Higher ratings like PN6.4 are available upon request, depending on the valve type and material. -
Q: Can this check valve be used with heavy fuel oil (HFO)?
A: Yes, with appropriate seal material (e.g., NBR or PTFE). For HFO at elevated temperatures, we recommend metal seat or PTFE seal. Please specify the fluid and temperature when ordering. -
Q: What flange standards do you follow?
A: We can manufacture flanges to ANSI B16.5 (Class 150/300/600), DIN PN10/16/40/64, JIS 10K/20K, or other standards as required. Please advise your preferred standard. -
Q: Do you provide a test certificate?
A: Yes. Each valve is hydrostatically tested per ISO 5208 (or API 598 if specified). A test certificate with material traceability is included with the shipment. We also offer third-party inspection if needed. -
Q: Is the valve suitable for vertical installation?
A: For swing-type check valves, horizontal installation is recommended. However, for vertical upward flow, a spring-loaded check valve or a specially designed swing check can be used. Please consult our technical team for best configuration. -
Q: What is the typical lead time?
A: For standard sizes and materials, lead time is 15–25 working days. Custom pressure ratings, special seals, or large quantities may require 30–45 days. We will confirm after order placement. -
Q: How is the valve packaged for export?
A: Each valve is individually wrapped with plastic, then packed in a strong plywood crate or on a pallet, with appropriate cushioning. Flange faces are protected to prevent damage during transit. -
Q: Do you have stock for popular sizes like DN50 PN16?
A: We maintain an inventory of common sizes (DN50, DN80, DN100) in PN16 and PN40. Please contact our sales team to check availability and confirm.
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