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Help CenterMarine Dual Plate Check Valve Factory Direct Ductile Iron CCS Warranty Included MOQ 10 Units
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Shanghai Zhibang Valve Manufacture Co., Ltd. – a professional manufacturer established in 2016 with an annual export value of US$1–1.5 million – proudly presents our Marine Dual Plate Check Valve. This valve is engineered with ductile iron construction for high durability and longevity in demanding marine environments. As a factory direct supplier, we eliminate intermediaries, offering competitive pricing without compromising quality. Each unit comes with a warranty included and a low minimum order quantity of 10 units, making it ideal for both small-scale projects and large fleet upgrades.
Key Features & Technical Advantages
- Dual Plate Design – Lightweight yet robust, the dual plates ensure rapid closure, reducing water hammer and protecting downstream equipment.
- Ductile Iron Body – Provides excellent tensile strength and impact resistance, surpassing cast iron and suitable for high-pressure marine systems.
- Spring-Assisted Closure – Stainless steel springs guarantee positive sealing even in vertical or horizontal installations.
- Low Pressure Drop – Streamlined flow path minimizes energy loss, improving system efficiency.
- Corrosion Resistance – Internal epoxy coating (optional) or nylon coating available for seawater and chemical applications.
- Easy Maintenance – No external actuators required; cartridge-type design simplifies inspection and part replacement.
- Customizable – Available in various pressure classes, sizes, and end connections (wafer or lug) to match existing piping.
Technical Specifications (Typical)
| Parameter | Details |
| Material | Ductile Iron (ASTM A536 60-40-18) |
| Plate Material | SS304 / SS316 / Duplex Stainless Steel (optional) |
| Seat Material | NBR / EPDM / Viton / PTFE (optional) |
| Working Pressure | Class 150 (up to 285 psi) / Class 300 (up to 740 psi) |
| Temperature Range | -20°C to +120°C (higher with special elastomers) |
| Applicable Media | Fresh water, seawater, oil, gas, air |
| Design Standard | API 594, BS 5153, ISO 5752 (available upon request) |
Benefits for Your Application
- Marine Compliance – Designed to meet the rigorous demands of shipbuilding and offshore platforms; CCS certification can be provided as an option.
- Cost Efficiency – Factory direct pricing with MOQ as low as 10 units reduces initial investment and per-unit cost.
- Reliable Warranty – Each valve is covered by our standard warranty, giving you peace of mind for long-term operation.
- Global Reach – Shipped from Shanghai, Guangzhou, Hongkong, or Beijing to all major markets including North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East.
Why Choose Shanghai Zhibang?
Since 2016, we have specialized in valve manufacturing and have maintained a strong export performance of US$1–1.5 million annually. Our ISO9001:2015 certified quality management system ensures consistent product quality and traceability. With a dedicated R&D team and rigorous testing procedures (hydrostatic, shell, and seat leakage tests), each valve undergoes strict inspection before shipment. Our main markets cover North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market – a testament to our global trust. Whether you need a standard size or a custom configuration, we are ready to support your projects with fast turnaround and professional service.
Contact us today for a quote or technical consultation. With our factory direct approach, low MOQ, and comprehensive warranty, the Marine Dual Plate Check Valve is your reliable choice for marine fluid control.
Frequently Asked Questions (FAQ)
Q1: What materials are used for the valve body and plates?
A: The standard body is ductile iron (ASTM A536 Grade 60-40-18). Plates are typically stainless steel (SS304/SS316) or duplex stainless steel, depending on the media and pressure requirements. Custom options are available for corrosive environments.
Q2: Is CCS certification included by default?
A: The product can be supplied with CCS certification as an optional requirement. Our standard certification is ISO9001. If you need CCS, please specify when ordering, and we will arrange the corresponding inspection.
Q3: What is the minimum order quantity (MOQ)?
A: Our MOQ is 10 units. For smaller quantities, please contact our sales team for possible accommodation. Larger orders benefit from quantity discounts.
Q4: What is the warranty period?
A: Each valve comes with a standard 12-month warranty from the date of shipment, covering manufacturing defects. Extended warranty can be arranged upon request.
Q5: Which sizes and pressure ratings are available?
A: We offer sizes from DN50 to DN600 (2" to 24") with pressure ratings up to Class 300. Custom sizes and higher pressures can be manufactured based on your specifications.
Q6: Can this valve be used in vertical pipelines?
A: Yes. The spring-assisted dual plate design allows operation in both horizontal and vertical installations. For vertical upward flow, a low cracking pressure spring is recommended; we can tailor the spring force accordingly.
Q7: How long does delivery take?
A: Typical lead time is 15–30 working days after order confirmation, depending on quantity and customization. For urgent orders, we can expedite production with prior arrangement.
Q8: Do you provide samples for testing?
A: Yes, we can provide a sample unit (customer pays freight) for evaluation. The sample will be produced according to your requirements and can be returned if not used.
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