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Help CenterCast Iron Dual Plate Check Valve DN600 PN16 Marine Grade Stainless Steel Disc EPDM Seal Wafer Type RINA Certified With Service Support
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016 with an annual export value of US$1 million to US$1.5 million, is proud to present our high-performance Cast Iron Dual Plate Check Valve DN600 PN16. Designed for demanding marine and industrial applications, this valve features a marine grade stainless steel disc and EPDM seal, ensuring reliable backflow prevention and long service life. Backed by our ISO9001 quality management system and RINA certification, this product meets the rigorous standards of the shipping industry and can be shipped from Shanghai, Guangzhou, Hong Kong, or Beijing. Whether you need a check valve for ballast water systems, firefighting lines, or cooling water circuits, our wafer type design offers compact installation and low pressure drop.
Our dual plate check valve is engineered for superior performance. Below are the key features and benefits that make this valve a preferred choice for marine and industrial projects.
- Compact Wafer Design: Lightweight and short face-to-face length (EN 558 line 48/API 594) allows easy installation between flanges, saving space and reducing piping costs.
- Marine Grade Stainless Steel Disc: Disc made from AISI 316 stainless steel (CF8M) offers excellent corrosion resistance against seawater, brackish water, and chemical agents.
- EPDM Seat/Seal: Ethylene Propylene Diene Monomer provides outstanding resistance to ozone, aging, and a wide temperature range (-40°C to +120°C), ensuring bubble-tight sealing.
- Cast Iron Body: Durable EN-GJL-250 cast iron body with protective coating (optional epoxy paint) withstands harsh marine environments.
- Spring-Assisted Closing: Stainless steel springs ensure rapid disc closure to prevent water hammer and reverse flow, even at low flow rates.
- RINA Certification: Registered with Registro Italiano Navale, confirming compliance with international maritime safety and quality standards.
- Low Pressure Drop: Streamlined disc design minimizes turbulence, reducing energy loss in the system.
- Bi-Directional Pressure Rating: Suitable for horizontal or vertical installations (for liquid services).
Technical Specifications
| Size | DN600 (24 inches) |
| Pressure Rating | PN16 (16 bar / 232 psi) |
| Face-to-Face Dimension | 203 mm (API 594) / 267 mm (EN 558-1 line 48) – available upon request |
| Flange Standard | EN 1092-1 PN16 / ASME B16.5 Class 150 – customizable |
| Disc Material | AISI 316 Stainless Steel (CF8M) |
| Body Material | Cast Iron EN-GJL-250 |
| Seal Material | EPDM |
| Working Temperature | -20°C to +120°C (continuous) / up to +150°C intermittent |
| Application | Marine systems (ballast, cooling, fire fighting), water treatment, HVAC, industrial pipelines |
| Certification | RINA, ISO9001 (manufacturing) |
This valve is designed to reduce installation and maintenance costs. The dual plate design allows full flow capacity with minimal obstruction, and the replaceable seat (EPDM) extends valve life. Customers benefit from optional customizations such as epoxy internal/external coating, extended bonnet for insulated pipes, and special springs for high-temperature applications. Our technical support team provides full design assistance, including valve sizing and flange matching.
Shanghai Zhibang Valve Manufacture Co., Ltd. has been producing quality valves since 2016, with an annual export value exceeding US$1 million. Our products are trusted by customers across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. With ISO9001 certification, a dedicated R&D team, and strict quality control procedures from raw material inspection to final hydrostatic testing, we ensure every valve meets international standards. The RINA certification for this specific model further validates its reliability in marine environments. We offer comprehensive service support, including installation guidance, troubleshooting, and spare parts supply. Your inquiry is welcome – we provide competitive pricing, fast delivery from Shanghai port, and flexible shipping options. Contact us today to request a quote or discuss your project needs.
Frequently Asked Questions (FAQ)
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Q: Is this valve suitable for seawater service?
A: Yes, the combination of cast iron body with protective coating and marine grade stainless steel disc (AISI 316) together with EPDM seal provides excellent corrosion resistance in seawater and brackish water. -
Q: What is the maximum working pressure for DN600 PN16?
A: The PN16 rating indicates the valve is designed for a maximum allowable working pressure of 16 bar (232 psi) at ambient temperature. For higher temperatures, please consult our technical team for derating factors. -
Q: Can this valve be installed vertically?
A: Yes, the spring-assisted dual plate design allows installation in any orientation (horizontal, vertical, or inclined) for liquid service. For gas service, we recommend horizontal installation. -
Q: Is the EPDM seal replaceable?
A: Yes, the seat is a replaceable rubber lining that can be changed without removing the valve from the pipeline. This reduces maintenance cost and downtime. -
Q: Do you provide a material certificate or test report?
A: Yes, we can supply mill certificates for body and disc materials, as well as pressure test reports and, upon request, RINA certification documents. -
Q: What flange standards does this valve match?
A: The standard design matches EN 1092-1 PN16 flanges. Adapters for ASME B16.5 Class 150 or other flange standards can be customized – please specify your requirements. -
Q: How long is the delivery time for DN600 check valves?
A: Lead time is typically 20-30 working days for standard configurations. Urgent orders can be expedited depending on stock availability – contact our sales team for details. -
Q: What kind of service support do you offer?
A: We provide full technical support, including valve selection assistance, installation guides, troubleshooting, and after-sales service. Spare parts such as springs, discs, and seals are available.
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