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Help CenterWafer Type Dual Plate Check Valve Cast Steel Body LR Approved 1.6-4.0MPa for Marine Oil Pipelines
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Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our high-quality Wafer Type Dual Plate Check Valve with cast steel body and LR Approved certification, specifically designed for marine oil pipelines. As a manufacturer established in 2016 with an annual export value of US$1-1.5 million, we have supplied reliable flow control solutions to markets across North America, Europe, Asia, and more. This check valve offers superior performance in preventing backflow, ensuring safe and efficient operation in demanding marine environments.
Our dual plate design delivers a lightweight, compact footprint while maintaining robust flow characteristics. The cast steel body withstands pressures from 1.6 to 4.0 MPa, making it ideal for oil pipelines on ships and offshore platforms. The valve meets rigorous LR (Lloyd's Register) standards, giving you confidence in its reliability under harsh conditions.
Key Features & Technical Specifications
- Lightweight wafer design – Easy to install between flanges, reducing overall system weight and space.
- Quick closing dual plates – Minimize water hammer and prevent reverse flow even at low velocities.
- Cast steel body (WCB/WCC) – High strength, corrosion resistance suitable for oil, water, and gas media.
- LR Approved – Complies with marine classification society requirements for shipboard applications.
- Pressure range 1.6 – 4.0 MPa (PN16 – PN40) – Covers common marine pipeline pressure classes.
- Temperature range -20°C to +200°C (customizable for extended ranges).
- Size range DN50 – DN600 (2" – 24") with other sizes available upon request.
- Low pressure drop – Optimized flow path reduces energy loss.
- Replaceable seat/seal rings – Available in NBR, Viton, or PTFE for media compatibility.
| Parameter | Value |
| Body Material | Cast Steel (WCB/WCC) |
| Disc Material | Stainless Steel (SS304/SS316) |
| Seat Material | NBR / Viton / PTFE (optional) |
| Pressure Rating | 1.6 – 4.0 MPa (PN16 – PN40) |
| Temperature Range | -20°C to +200°C |
| Connection Type | Wafer (between flanges) |
| Certification | LR Approved (Lloyd's Register) |
| Size Range | DN50 – DN600 (customizable) |
| Application | Marine oil pipelines, shipboard systems |
Why Choose Our Dual Plate Check Valve?
Compared to swing check valves, our wafer-type dual plate design offers reduced weight (up to 60% lighter), easier installation, and lower maintenance. The spring-assisted closing action ensures rapid sealing, protecting pumps and piping from pressure surges. The cast steel body can be supplied with epoxy coating for enhanced corrosion resistance in seawater environments.
For marine oil pipelines, valve failure can lead to costly downtime and safety hazards. Our valve's LR approval confirms it meets strict classification requirements for fire safety, material traceability, and pressure containment. Additionally, the valve can be customized with special trims for sour service (NACE MR0175) or high-temperature applications.
Trusted Expertise from Shanghai Zhibang Valve
With ISO9001 certified manufacturing processes and an annual export value exceeding US$1 million, we have supplied valves to clients in over 15 global markets including North America, Europe, Southeast Asia, and the Middle East. Our factory in Shanghai, China, is equipped with CNC machining centers, pressure testing equipment, and a dedicated quality control team. Every valve undergoes hydrostatic and pneumatic tests before shipment.
We offer flexible shipping from Shanghai, Guangzhou, Hongkong, or Beijing ports, with lead times typically 20-35 days. Our technical team provides installation guidance and after-sales support. Choose Shanghai Zhibang for a reliable partner in marine valve solutions.
Contact us today for a quote or technical datasheet. Let our dual plate check valve safeguard your marine oil pipeline operations.
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