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Help CenterDual Plate Marine Check Valve for FPSO Offshore, Compact Design, ANSI Class 150-600
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a dedicated manufacturer of high-performance industrial valves with a strong focus on offshore and marine applications. Our Dual Plate Marine Check Valve for FPSO Offshore is engineered with a compact design and available in ANSI Class 150–600 pressure ratings, delivering reliable backflow prevention in demanding environments. With over 8 years of industry experience and exports to global markets, we provide robust, cost-effective solutions that enhance operational safety and reduce maintenance downtime.
This check valve is specifically designed for FPSO (Floating Production Storage and Offloading) vessels and other offshore platforms where space is limited and reliability is critical. The dual plate configuration enables a slim profile, lightweight construction, and quick closure, minimizing pressure loss and preventing water hammer. Below we detail the key features, technical specifications, and tangible benefits for your projects.
Key Features & Benefits
- Compact & Lightweight – The dual plate design reduces face-to-face length by up to 40% compared to conventional swing check valves, saving valuable space on offshore skids and piping systems.
- Fast Closing Action – Spring-assisted plates ensure rapid closure as flow reverses, protecting pumps, compressors, and other sensitive equipment from damaging backflow and surge pressures.
- Low Pressure Drop – Streamlined disc profile and large flow area minimize head loss, improving system energy efficiency and reducing operating costs.
- Corrosion Resistance – Available in carbon steel, stainless steel, and duplex stainless steel materials with optional coatings for seawater, crude oil, and sour gas services (NACE MR0175 compliance available upon request).
- Versatile Installation – Wafer-style body fits between standard ANSI flanges (RF or RTJ) without additional gaskets or bolt sets, simplifying maintenance and retrofitting.
- Zero Leakage – Precision-machined seat and resilient sealing materials (NBR, EPDM, Viton) ensure bubble-tight shut-off even under low differential pressure.
- Full Traceability – Each valve is serialized, tested (hydrostatic and pneumatic), and accompanied by certified material reports (MTR) upon request.
Technical Specifications
| Parameter | Value / Range |
| Pressure Rating | ANSI Class 150, 300, 600 (others on request) |
| Size Range | 2" – 24" (DN50 – DN600) |
| Design Standard | API 594, BS 1868, ISO 17292 (compliant) |
| Face-to-Face | ANSI B16.10 (short pattern) |
| End Flanges | ANSI B16.5 RF / RTJ |
| Temperature Range | -20°C to +200°C (extended range optional) |
| Body Materials | WCB, CF8M, 316L, Duplex (2205/2507) |
| Disc & Spring | Stainless steel (AISI 316, 17-4PH) |
| Seat Seals | NBR, EPDM, Viton, PTFE (customizable) |
Our dual plate check valves undergo rigorous factory testing including 100% shell hydrostatic test (1.5× rated pressure) and seat leakage test (low-pressure air). All tests are documented in a comprehensive inspection certificate. Additionally, we offer optional third-party inspection (e.g., DNV, Bureau Veritas) to meet specific project requirements.
Why Choose Shanghai Zhibang Valve?
With an annual export value of US$1 million to US$1.5 million, we have supplied thousands of check valves to customers in North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, Western Europe, and beyond. Our factory is ISO9001:2015 certified, ensuring consistent quality management from raw material procurement to final packaging. We ship from major Chinese ports including Shanghai, Guangzhou, Hongkong, and Beijing, providing competitive lead times and flexible logistics.
Every order benefits from our technical support team who can assist with valve selection, material compatibility, and installation guidance. We also offer customization services — non-standard sizes, special coatings, and actuator mounting kits (for automatic shut-off) are available upon request. Whether you are a system integrator, EPC contractor, or end user, our dual plate marine check valves deliver reliable performance, long service life, and low total cost of ownership.
Contact us today to request a quotation, technical datasheet, or sample. Our experienced sales engineers are ready to support your offshore and FPSO projects from concept to commissioning.
Frequently Asked Questions (FAQ)
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Q: What services (fluids) can this valve handle?
A: The valve is suitable for seawater, crude oil, produced water, natural gas, and other hydrocarbon fluids commonly found in FPSO and offshore platforms. For sour gas or corrosive services, we recommend duplex stainless steel or Inconel® springs. -
Q: What is the maximum pressure rating available?
A: Standard pressure ratings cover ANSI Class 150, 300, and 600. Higher classes (900, 1500) are available as special orders with extended delivery time. -
Q: Can the valve be installed vertically or horizontally?
A: Yes, the spring-assisted design allows reliable operation in any orientation, though horizontal installation with the shaft vertical is preferred for optimal performance. -
Q: What materials are standard for the seat seal?
A: Standard seals are NBR (nitrile) for oil service and EPDM for water/steam. Viton®, PTFE, and high-temperature elastomers are available as options. -
Q: Does the valve come with a manual override?
A: Our standard model is automatic (spring-closing). A manual locking device or gearbox can be added on request for maintenance-free operation. -
Q: What certifications do you provide with the valve?
A: Each valve is supplied with a material certificate (EN 10204 3.1), hydrostatic test report, and ISO9001 quality documentation. Additional certifications (e.g., PED, DNV, ABS) are available at extra cost. -
Q: What is the typical delivery time?
A: For standard sizes (2"–12") in carbon steel, delivery is 2–4 weeks. Larger sizes or exotic materials may require 6–8 weeks. We offer expedited production for urgent projects. -
Q: Can I get a sample before bulk order?
A: Yes, sample orders are welcome. We can provide a single valve in your size and material for testing. Sample cost is refundable on mass production orders.
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