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Home > Industrial Equipment & Components > Valve > Check Valve > DN50-DN300 316L Marine Stainless Steel Dual Plate Check Valve, PN1.0-4.0MPa, Wafer Type for Ballast Water
DN50-DN300 316L Marine Stainless Steel Dual Plate Check Valve, PN1.0-4.0MPa, Wafer Type for Ballast Water
Product Spotlights
ISO9001-certified 316L marine stainless steel wafer check valve for ballast water systems. DN50-DN300, PN1.0-4.0MPa. Corrosion-resistant dual plate design minimizes water hammer and pressure drop. Suitable for vertical/horizontal installation. Customizable seat materials. Fast shipment from Shanghai, Guangzhou, Hong Kong, Beijing.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, 316L Stainless Steel
Application:
Other, Ballast Water Systems
Size Range:
DN50 - DN300
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, 316L Stainless Steel
Application
Other, Ballast Water Systems
Size Range
DN50 - DN300
Pressure Rating
PN1.0 - PN4.0MPa
Type
Wafer Type
Certification
ISO9001
Connection
Wafer (between flanges)
Disc Material
316L Stainless Steel
Body Material
316L Stainless Steel
Shanghai Zhibang Valve Manufacture Co., Ltd. (established 2016) presents our premium DN50-DN300 316L Marine Stainless Steel Dual Plate Check Valve, specifically engineered for demanding ballast water management systems. As a manufacturer with over US$1 million annual export value and ISO9001 certified facilities, we deliver valves that combine exceptional corrosion resistance with reliable backflow prevention. The wafer-type design allows for compact installation between flanges, while the dual plate mechanism ensures quick closing and minimal pressure drop. Whether your system operates at PN1.0 or PN4.0MPa, this check valve provides long-lasting performance in marine environments.
Key Features & Technical Specifications
- Material Excellence: Full 316L stainless steel construction (body, disc, spring) offers superior resistance to chloride-induced corrosion, ideal for seawater ballast applications.
- Pressure Versatility: Rated from PN1.0 to PN4.0MPa (150# to 300# equivalent), covering most low to medium pressure marine piping systems.
- Size Flexibility: Available in DN50, DN80, DN100, DN150, DN200, DN250, DN300 – standard wafer dimensions per API 594.
- Compact Design: Short face-to-face length reduces installation space and weight compared to swing check valves.
- Non-Slam Operation: Dual plates close rapidly with spring assist, preventing water hammer and protecting downstream equipment.
- Bidirectional Sealing: Optional soft-seat (NBR/EPDM) or metal-to-metal sealing for different media compatibility.
- Easy Maintenance: Cartridge-style design allows replacement of internal components without removing the valve from the pipeline.
| Parameter | Value |
| Size Range | DN50 – DN300 (2" – 12") |
| Pressure Class | PN10 / PN16 / PN25 / PN40 (150# – 300#) |
| Working Temperature | -20°C to +120°C (standard), up to +200°C with optional seats |
| Connection Standard | Wafer type per EN 558 / API 594 |
| Flange Standard | DIN / ANSI / JIS (upon request) |
| Body & Disc Material | 316L Stainless Steel (1.4404) |
| Seat Material | NBR, EPDM, Viton, or Metal (optional) |
| Spring Material | 316L Stainless Steel |
| Face-to-Face Length | Per ISO 5752 series 16 |
| Certification | ISO9001:2015, manufacturing standard API 594 |
Why choose our wafer dual plate check valve for ballast water?
- Extended Service Life: The 316L alloy resists pitting and crevice corrosion, reducing replacement frequency in seawater environments.
- Low Pressure Drop: Streamlined disc profile minimizes head loss, improving overall system efficiency.
- Installation Simplicity: Lightweight wafer design can be installed between flanges without special supports – ideal for confined engine rooms or skid-mounted systems.
- Customizable Options: Available with lever-lock open feature or position indicator; soft seat materials can be selected based on media temperature and chemical compatibility.
- Global Compliance: Manufactured under ISO9001 quality system, meeting international standards for marine and industrial applications.
Trust & Quality Assurance from Shanghai Zhibang Valve Manufacture Co., Ltd.
As a dedicated manufacturer founded in 2016, we have built a reputation for delivering reliable flow control solutions to markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our annual export value exceeds US$1 million, with ISO9001 certification ensuring consistent quality. We ship from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, offering flexible logistics. Each valve undergoes hydrostatic and seat leakage testing before dispatch. When you choose our DN50-DN300 316L dual plate check valve, you invest in a product backed by engineering excellence and responsive customer support. Contact us for performance curves, dimensional drawings, or a quotation tailored to your ballast water system requirements.
Frequently Asked Questions (FAQ)
-
Can this valve be used for both vertical and horizontal pipelines?
Yes, the dual plate check valve can be installed in both vertical (upward flow) and horizontal orientations. For vertical down-flow, spring-assisted closing ensures reliable sealing. -
What is the maximum working temperature of the standard model?
The standard NBR seat is rated up to +80°C; EPDM seat up to +120°C; Viton seat up to +200°C. Metal seat versions can handle higher temperatures upon request. -
Do you provide spare parts or repair kits?
Yes, we offer spring, disc, and seat replacement kits. The cartridge design allows easy field maintenance. -
How does the wafer installation differ from flange-end type?
The wafer valve is sandwiched between two flanges using long bolts, requiring no companion flanges. This reduces weight and length compared to flanged end valves. -
Is the 316L material suitable for chlorinated seawater?
Absolutely. 316L stainless steel has excellent resistance to chloride stress corrosion cracking, making it ideal for ballast water with high chloride content. -
Can I get a sample before bulk order?
Yes, samples are available. Please contact our sales team with your size and pressure requirements. -
What warranty do you offer?
We provide a standard 12-month warranty from the date of shipment against manufacturing defects. Extended warranty options may be negotiated for large projects. -
Do you have stock for common sizes like DN100 PN16?
We maintain inventory for popular sizes and pressure classes; lead times for standard products are typically 7-15 days. Custom orders may take longer.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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