Contact Platform Support
Help CenterHorizontal/Vertical Installation Marine Dual Plate Check Valve, 316L Stainless Steel, DN250, PN4.0MPa
Product Spotlights
Related Products
-
Factory Direct Marine Stainless Steel Dual Plate Check Valve, 316L Material, LR ABS Certified, 12-Month GuaranteeNegotiableMOQ: 1 Unit -
Offshore Oil & Gas Platform Marine Stainless Steel Dual Plate Check Valve, Wafer Type, DN200, PN2.5MPaNegotiableMOQ: 1 Unit
-
1-Year Warranty Marine 316L Dual Plate Check Valve, With Mill Test Report, DN50-DN300, PN1.0-4.0MPaNegotiableMOQ: 1 Unit
-
Wafer Type Marine Dual Plate Check Valve Cast Iron Body DN80 PN16 Rated Stainless Steel Disc EPDM Seal RINA CertifiedNegotiableMOQ: 1 Unit
-
Marine Dual Plate Check Valve DN100 PN1.6MPa Cast Iron With Stainless Steel Disc and EPDM Seal BV ApprovedNegotiableMOQ: 1 Unit
Shanghai Zhibang Valve Manufacture Co., Ltd. proudly introduces our Horizontal/Vertical Installation Marine Dual Plate Check Valve, crafted from premium 316L stainless steel in size DN250 with a pressure rating of PN4.0MPa. Designed specifically for demanding marine and offshore applications, this check valve delivers reliable backflow prevention, minimal pressure loss, and exceptional corrosion resistance. As an ISO9001-certified manufacturer with over US$1 million in annual exports, we ensure every valve meets rigorous quality standards.
Our dual plate check valve features a compact wafer design that allows installation in both horizontal and vertical pipelines. The 316L stainless steel body and discs provide outstanding durability against seawater, chemicals, and high‑temperature environments. With a slim profile and lightweight construction, it reduces space requirements and simplifies maintenance compared to traditional swing check valves. Whether used in ballast systems, cooling water lines, or fire‑fighting systems, this valve offers reliable non‑slamming operation and long service life.
Key Features & Benefits
- Dual-Plate Design – Spring-assisted plates ensure quick closing, preventing water hammer and reducing noise.
- 316L Stainless Steel Construction – Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in marine environments.
- Horizontal & Vertical Installation – Spring tension is optimized for both orientations, offering flexibility in piping layout.
- Wafer Body Style – Lightweight and compact, fits between standard flanges (PN4.0MPa / Class 300) without extra supports.
- Non-Slamming Operation – Disc travel is short and controlled, eliminating sudden pressure surges.
- Low Pressure Drop – Streamlined flow path minimizes energy loss, improving system efficiency.
- Easy Maintenance – Cartridge design allows quick replacement of internal parts without removing the valve from the pipeline.
- Wide Temperature Range – Suitable for media from -20°C to +200°C (depending on seal material).
Technical Specifications
| Parameter | Value |
| Size | DN250 (10 inch) |
| Pressure Rating | PN4.0MPa (580 psi) |
| Body Material | 316L Stainless Steel |
| Disc Material | 316L Stainless Steel |
| Spring Material | 316L Stainless Steel |
| Seal Material | EPDM / Viton (optional) |
| Installation Orientation | Horizontal / Vertical |
| Temperature Range | -20°C to +200°C |
| Face-to-Face Dimension | ISO 5752 / API 594 (short pattern) |
| Flange Standard | EN 1092-1 / ASME B16.5 (on request) |
Marine & Industrial Applications
- Seawater cooling systems
- Ballast water treatment
- Fire-fighting pipelines
- Desalination plants
- Offshore platforms
- Shipbuilding & repair
- General industrial water & wastewater
The DN250 dual plate check valve is engineered to withstand harsh marine conditions. Its 316L stainless steel composition resists chloride attack, while the spring-loaded plates provide immediate closure at zero flow. This design eliminates the risk of reverse flow and protects pumps and compressors from damage. Additionally, the wafer body reduces weight by up to 60% compared to conventional check valves, making installation easier and lowering structural support costs.
Every valve undergoes hydrostatic shell testing at 1.5 times the rated pressure and seat leakage tests according to API 598. Our factory in Shanghai uses advanced CNC machining and robotic welding to ensure consistent quality. With a production capacity exceeding 50,000 units per year, we can fulfill large orders with short lead times.
Why Choose Shanghai Zhibang Valve?
- ISO9001 Certified – Our quality management system is audited annually for continuous improvement.
- Global Export Experience – Over US$1–1.5 million annual export value to North America, Europe, Southeast Asia, Middle East, Africa, Oceania, and South America.
- Flexible Customization – We offer optional seal materials, extended stems for gear operation, and special coatings upon request.
- Reliable After-Sales Support – 12-month warranty against manufacturing defects, with technical assistance available 24/7.
- Competitive Pricing – Direct factory pricing with no middlemen, ensuring superior value for your project.
We invite you to experience the performance of our Marine Dual Plate Check Valve. With thousands of units already operating in demanding marine environments worldwide, our valve has proven its durability and efficiency. Contact us today with your specific requirements, and we will provide a detailed quotation and technical documentation. Let Shanghai Zhibang Valve be your trusted partner in flow control.
Frequently Asked Questions
-
Q: Can this valve be installed vertically (rising flow) without additional modifications?
A: Yes, the spring tension is factory-set to ensure proper disc closing in both horizontal and vertical orientations. No modification is required. -
Q: What is the maximum operating temperature for this valve?
A: With standard EPDM seals, the temperature range is -20°C to +120°C. For higher temperatures up to +200°C, Viton seals are available as an option. -
Q: Does the valve come with flanges?
A: No, this is a wafer-style check valve designed to be installed between two flanges. Flanges are not included but can be supplied upon request. -
Q: What pressure testing standards are used?
A: Each valve is hydrostatically tested at 1.5× PN (6.0MPa) for shell integrity and seat leakage tested at 0.1MPa per API 598. -
Q: Can you provide material certification (MTC) for 316L?
A: Yes, we can supply 3.1 material test certificates for the body, disc, and spring. Please specify at the time of order. -
Q: Is this valve suitable for seawater service?
A: Absolutely. 316L stainless steel offers excellent resistance to chloride pitting and is widely used in marine and offshore applications. -
Q: What is the typical lead time for DN250 PN40 valves?
A: For standard configurations, lead time is 15–25 working days. Expedited shipping is available for urgent orders. -
Q: Do you offer a warranty?
A: We provide a 12-month warranty covering defects in materials and workmanship from the date of shipment.
*All specifications are subject to change without notice. Please confirm with our sales team for the latest version.
Send Inquiry to This Supplier
You May Also Like
-
Cast Iron Dual Plate Check Valve for Marine Seawater Systems DN150 PN10 Wafer End Stainless Steel Disc EPDMNegotiableMOQ: 1 Unit
-
DN200 Marine Dual Plate Check Valve Cast Iron PN1.0MPa Stainless Steel Disc EPDM Seal Sour Water ServiceNegotiableMOQ: 1 Unit
-
Dual Plate Check Valve for Marine Ballast Water System Cast Iron DN500 PN1.0MPa Stainless Steel Disc EPDM Seal 12 Months WarrantyNegotiableMOQ: 1 Unit
-
Marine Cast Iron Dual Plate Check Valve DN400 PN10 With Mill Test Report Stainless Steel Disc EPDM Seal BV RINANegotiableMOQ: 1 Unit
-
Dual Plate Check Valve Cast Iron Marine DN300 PN1.6MPa Wafer Connection Stainless Steel Disc EPDM Seal 1 Year WarrantyNegotiableMOQ: 1 Unit
-
Marine Dual Plate Check Valve DN250 PN16 Cast Iron Body With 304 Stainless Steel Disc EPDM Seal Standard CompliantNegotiableMOQ: 1 Unit
-
Cast Iron Dual Plate Check Valve DN600 PN16 Marine Grade Stainless Steel Disc EPDM Seal Wafer Type RINA Certified With Service SupportNegotiableMOQ: 1 Unit
-
Marine Cast Iron Dual Plate Check Valve DN50-DN600 PN1.0-1.6MPa Stainless Steel Disc EPDM Seal Wafer ConnectionNegotiableMOQ: 1 Unit
-
Zhibang Valve PN1.6-4.0MPa Marine Dual Plate Check Valve Flanged Cast Steel Stainless Steel DiscNegotiableMOQ: 1 Unit
-
Zhibang Valve Marine Dual Plate Check Valve With Mill Test Report 1 Year Warranty Flanged Cast SteelNegotiableMOQ: 1 Unit
