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Marine Dual Plate Check Valve in Ductile Iron, API 594 Compliant, Non-Slam Disc, Spring Loaded
Product Spotlights
The Marine Dual Plate Check Valve features a ductile iron body, API 594 compliant non-slam spring-loaded disc, ensuring low pressure drop, water hammer elimination, and reliable backflow prevention. Suitable for seawater, ballast, and industrial systems. Customizable materials and coatings with ISO9001 certified quality.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, Ductile Iron
Standard:
Other, API 594
Application:
Other, Marine
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Ductile Iron
Standard
Other, API 594
Application
Other, Marine
Type
Dual Plate, Spring Loaded Non-Slam Disc
Size Range
2“ - 48“ (Customizable)
Pressure Rating
Class 150 to Class 2500 (Available upon request)
End Connection
Wafer (Lug type optional)
Temperature Range
-20°C to +120°C (Customizable)
Brand
Shanghai Zhibang Valve
Warranty
12 months
Introducing the Marine Dual Plate Check Valve in Ductile Iron, API 594 Compliant, with Non-Slam Disc and Spring Loaded Design
Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016 and headquartered in Shanghai, China, is a professional manufacturer specializing in high-quality valve solutions. With an annual export value of US$1 million to US$1.5 million, we serve global markets including North America, South America, Europe, Africa, and Oceania. Our Marine Dual Plate Check Valve is engineered to meet the demanding requirements of marine and industrial applications, combining robust ductile iron construction with API 594 compliance. The non-slam disc and spring-loaded mechanism ensure reliable operation, preventing water hammer and minimizing maintenance. This valve is an ideal choice for seawater systems, ballast lines, and other critical fluid control applications where durability and performance are paramount.
Key Features & Technical Specifications
- Durable Ductile Iron Body: Offers excellent corrosion resistance and mechanical strength, suitable for harsh marine environments. Available with optional epoxy coating for extended service life.
- API 594 Compliant: Meets the dimensional and performance requirements of API 594 (Wafer Check Valves), ensuring interchangeability and reliable operation.
- Non-Slam Disc Design: The spring-loaded dual plates close quickly before reverse flow occurs, reducing pressure surges and preventing noise and vibration.
- Spring-Loaded Mechanism: Ensures positive closure even at low differential pressure, making it suitable for vertical or horizontal installations.
- Compact Wafer Style: Saves space and reduces weight compared to conventional swing check valves. Available in lug type upon request.
- Wide Pressure Range: Designed for Class 150 to Class 2500 (customizable per project requirements).
- Low Pressure Drop: Streamlined flow path minimizes energy loss and improves system efficiency.
- Easy Maintenance: Simple design allows quick inspection and replacement of internal parts without removing the valve from the pipeline.
| Parameter | Value |
|---|---|
| Material | Ductile Iron (ASTM A536 Grade 65-45-12) |
| Disc Material | Stainless Steel (CF8M or Duplex optional) |
| Seal Material | EPDM, Viton, or PTFE (customizable) |
| Spring Material | Stainless Steel 316 |
| Operation Temperature | -20°C to +120°C (higher range available) |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 |
| Face-to-Face Dimension | Per API 594 (ANSI B16.10) |
Customer Benefits
- Reliable Backflow Prevention: The spring-loaded non-slam disc ensures bubble-tight sealing and eliminates reverse flow, protecting pumps and compressors.
- Reduced Water Hammer: Quick closing action minimizes pressure surges, extending pipeline life and reducing noise.
- Versatile Installation: Can be mounted in any orientation (horizontal, vertical, inclined) without performance degradation.
- Cost-Effective: Lower pressure drop results in energy savings, while durable construction reduces replacement frequency.
- Global Standards Compliance: API 594, ISO 9001 certified factory ensures consistent quality.
Trust Shanghai Zhibang Valve for Your Marine Valve Needs
As a reliable manufacturer since 2016, Shanghai Zhibang Valve has exported over US$1 million worth of valves annually to diverse markets worldwide. Our ISO9001 certification underscores our commitment to quality management. We have supplied marine check valves to shipbuilders, offshore platforms, and naval applications across North America, Europe, Asia, and beyond. Each valve undergoes rigorous hydrostatic and pneumatic testing to ensure leak-tight performance. With flexible shipping from Shanghai, Guangzhou, Hong Kong, and Beijing, and support for custom requirements (materials, coatings, special trims), we are your trusted partner for critical fluid control. Contact us today to discuss your project specifications and receive a competitive quotation.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between a dual plate check valve and a swing check valve?
A: A dual plate check valve uses two spring-loaded plates that close quickly to prevent backflow, reducing water hammer and allowing compact installation. A swing check valve uses a single disc that swings on a hinge, requiring more space and slower response. -
Q: Can this valve be used for seawater applications?
A: Yes, the ductile iron body with optional epoxy coating and stainless steel internals makes it suitable for seawater. We recommend specifying marine-grade materials for long-term corrosion resistance. -
Q: What does API 594 compliance mean?
A: API 594 specifies dimensions, pressure-temperature ratings, and testing requirements for wafer and lug-type check valves. Compliance ensures interchangeability and reliable performance per industry standards. -
Q: Is the spring-loaded design reliable in vertical pipes?
A: Yes, the spring ensures positive disc closure even against gravity, making it suitable for vertical installations with upward flow. -
Q: What is the standard warranty period?
A: We offer a 12-month warranty against manufacturing defects. Extended warranties are available upon request. -
Q: Can I get custom flange drilling or special coatings?
A: Absolutely. We provide custom options including different flange standards (ANSI, DIN, JIS), coatings (epoxy, nylon, galvanized), and trim materials (duplex, super duplex) to meet your project needs. -
Q: What is the typical lead time?
A: For standard sizes and materials, lead time is 15-25 days. Customized orders may require 30-45 days depending on complexity. -
Q: How do I ensure the correct size for my pipeline?
A: The valve is designed to fit between flanges with face-to-face dimensions per API 594. Please confirm your pipe diameter, pressure class, and flange standard to select the correct model.
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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