Home > Industrial Equipment & Components > Valve > Check Valve > DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved

DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved

DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved thumbnail-1
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved thumbnail-2
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved thumbnail-3
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved thumbnail-4
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved thumbnail-5
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved photo-1
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved photo-2
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved photo-3
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved photo-4
DN50-DN200 Marine Dual Plate Check Valve for Compressed Air, Cast Iron Body, Rubber Seat, PN1.0-1.6MPa, Wafer, CCS Approved photo-5

Product Spotlights

CCS-approved marine dual plate check valve with cast iron body and rubber seat. Wafer style for compact installation. Ideal for compressed air systems in ships and offshore platforms. PN1.0-1.6MPa, DN50-DN200. Fast closing, low pressure drop, and easy maintenance. Backed by ISO9001 manufacturer with reliable export experience.
Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, Marine & Compressed Air Systems
Standard:
Other, Marine Industry Standard
Size Range:
DN50 - DN200
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Shanghai Zhibang Valve Manufacture Co.,ltd
Gold Verified Supplier
1Yr
Verified Business License
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.

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Application Other, Marine & Compressed Air Systems
Standard Other, Marine Industry Standard
Size Range DN50 - DN200
Body Material Cast Iron
Seat Material Rubber
Pressure Rating PN1.0 - PN1.6 MPa
Type Wafer Style
Certification CCS Approved
Connection Wafer (Between Flanges)

Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016 with ISO9001 certification and an annual export value of US$1-1.5 million, proudly presents our DN50-DN200 Marine Dual Plate Check Valve designed specifically for compressed air systems. This valve combines a robust cast iron body with a resilient rubber seat, offering reliable backflow prevention in marine environments. With CCS (China Classification Society) approval, it meets the strictest industry standards for safety and performance. Its wafer-style construction ensures easy installation between flanges, saving space and reducing weight. Trusted by global markets including North America, Europe, and Southeast Asia, our check valve delivers consistent quality and long service life.

Key Features & Technical Specifications

  • Dual Plate Design: Two spring-loaded plates close quickly upon flow reversal, minimizing water hammer and protecting downstream equipment.
  • Cast Iron Body: High-strength cast iron (GG25) provides excellent corrosion resistance and durability in marine atmospheres.
  • Rubber Seat: NBR or EPDM rubber seat ensures a tight seal even with compressed air, reducing leakage to near zero.
  • Wafer Connection: Compact wafer style fits between standard flanges (DIN, ANSI, etc.), allowing easy retrofit without extra pipe supports.
  • Pressure Range: Available in PN1.0, PN1.6 MPa, suitable for low to medium pressure compressed air lines.
  • Size Range: DN50 to DN200 (2" to 8") covers most shipboard and industrial applications.
  • CCS Approved: Full certification from China Classification Society verifies compliance with marine safety regulations.
  • Low Maintenance: Simple construction with few moving parts reduces inspection and replacement costs.

Parameter Specification
Size Range DN50, DN65, DN80, DN100, DN125, DN150, DN200
Body Material Cast Iron (GG25 / ASTM A126 Class B)
Disc Material Ductile Iron / Stainless Steel (optional)
Seat Material NBR / EPDM / Viton (upon request)
Pressure Rating PN1.0 MPa (10 bar) / PN1.6 MPa (16 bar)
Operating Temperature -10°C to +80°C (standard)
Connection Wafer type, fit between ANSI/DIN/BS flanges
Certification CCS, ISO9001 (company)

Benefits to Your Operations

  • Space Saving: The wafer design eliminates the need for long pipe spools, ideal for confined engine rooms or offshore platforms.
  • Minimal Pressure Drop: Streamlined dual plates allow smooth flow, reducing energy loss in compressed air networks.
  • Fast Response: Spring-assisted closing prevents reverse flow in less than 0.5 seconds, protecting compressors and instruments.
  • Corrosion Resistance: Cast iron with epoxy coating (optional) resists humidity and salt spray in marine environments.
  • Easy Maintenance: Cartridge-style seat and disc assembly can be replaced without removing the valve from the pipeline.
  • Versatility: Suitable for compressed air, fresh water, seawater, and low-viscosity fluids.

With over 8 years of manufacturing experience, Shanghai Zhibang Valve has supplied thousands of check valves to shipbuilders, offshore operators, and industrial plants worldwide. Our ISO9001 quality management system ensures every valve undergoes rigorous testing, including hydrostatic shell test (1.5 x PN) and seat leak test (1.1 x PN). We ship from Shanghai, Guangzhou, Hong Kong, and Beijing ports, with lead times as short as 15 days for standard sizes. Backed by a dedicated after-sales team, we provide technical support and replacement parts for the life of the valve. Choose our CCS-approved dual plate check valve to secure your compressed air system—contact us today for a competitive quotation and fast delivery.

Frequently Asked Questions (FAQ)

  • Q: What is the difference between this dual plate check valve and a swing check valve?
    A: Dual plate check valves have a shorter face-to-face dimension, lighter weight, and faster closing action. They are ideal for compact spaces and systems where water hammer must be minimized.
  • Q: Can this valve be used for seawater or aggressive fluids?
    A: The standard cast iron body with rubber seat is suitable for fresh water, compressed air, and oily media. For seawater, we recommend optional stainless steel discs and an epoxy-coated body. Please specify your medium when ordering.
  • Q: Is CCS certification mandatory for all marine applications?
    A: While many marine projects require class society approval (CCS, DNV, ABS, etc.), we offer customization for other certifications upon request. Our valve is designed to meet common class rules.
  • Q: What flange standards does the wafer style accommodate?
    A: The wafer pattern fits standard flanges according to DIN, ANSI (Class 150), BS, and JIS. We can adjust the face-to-face dimension for specific standards if needed.
  • Q: How do I select the correct pressure rating (PN1.0 vs PN1.6)?
    A: PN1.0 is suitable for low-pressure compressed air systems (up to 10 bar). PN1.6 covers higher pressure lines. Always consider your maximum operating pressure plus safety margin. We provide detailed selection guides.
  • Q: What is the typical lead time for DN50-DN200 sizes?
    A: For standard cast iron models, lead time is 15-25 working days from order confirmation. Rush orders can be arranged with prior agreement.
  • Q: Do you offer spare parts or repair kits?
    A: Yes, we provide complete seat and disc replacement kits, as well as spring sets. Contact our technical team for part numbers and prices.
  • Q: Can this valve be installed horizontally or vertically?
    A: The dual plate check valve can be installed in any orientation. However, for vertical installation with upward flow, spring tension should be confirmed. Please consult our engineers for specific conditions.
Product Tags: Marine Dual Plate Check Valve , Cast Iron Wafer Check Valve for Compressed Air , CCS Approved Check Valve PN1.0-1.6MPa

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Shanghai Zhibang Valve Manufacture Co.,ltd
Gold Verified Supplier
1Yr
Verified Business License
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
Contact Supplier Request Quote Chat Now

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