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Home > Industrial Equipment & Components > Valve > Check Valve > Factory Direct Marine Stainless Steel Dual Plate Check Valve, 316L Material, LR ABS Certified, 12-Month Guarantee
Factory Direct Marine Stainless Steel Dual Plate Check Valve, 316L Material, LR ABS Certified, 12-Month Guarantee
Product Spotlights
Factory direct 316L dual plate check valve with LR ABS certification, ideal for marine ballast, cooling, and fire systems. Compact wafer design reduces weight and space, while 12-month guarantee and ISO9001 quality ensure reliable operation. Customizable seals and connections, global shipping from Shanghai.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, 316L Stainless Steel
Application:
Other, Marine
Type:
Dual Plate Check Valve
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, Marine
Type
Dual Plate Check Valve
Connection
Wafer Type (Lug Type Optional)
Size Range
DN50 - DN600 (2“ - 24“)
Pressure Rating
PN10/16, Class 150
Certification
LR ABS Certified, ISO9001
Temperature Range
-20°C to +200°C
Warranty
12-Month Guarantee
Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Factory Direct Marine Stainless Steel Dual Plate Check Valve, crafted from premium 316L material with LR ABS certification — a robust solution designed specifically for demanding marine and offshore environments. As a manufacturer established in 2016 with an annual export value of US$1 million to US$1.5 million, we combine cost-efficiency with uncompromising quality, ensuring every valve meets the rigorous standards of shipbuilding and fluid control systems. With a 12-month guarantee and direct factory pricing, this check valve delivers reliable performance, corrosion resistance, and long service life — key advantages for shipyards, marine engineers, and industrial buyers worldwide.
Product Features & Technical Specifications
- Premium Material: Full 316L stainless steel body and plates provide superior resistance to seawater, chlorides, and aggressive fluids — ideal for ballast systems, cooling water lines, and fire-fighting systems.
- Dual Plate Design: Lightweight, compact wafer style reduces installation space and weight, while the spring-assisted plates ensure rapid closing to prevent water hammer and backflow.
- LR ABS Approved: Each valve is certified by Lloyd's Register and American Bureau of Shipping, confirming compliance with international marine classification standards — a must for newbuilds and retrofits.
- Versatile Connection: Standard wafer type suitable for flange dimensions ASME B16.5, EN 1092, and JIS; optional lug type available upon request for dead-end service.
- Wide Size Range: Available from DN50 (2") to DN600 (24") with pressure ratings PN10/PN16 or Class 150, covering most shipboard piping requirements.
- Temperature Resilience: Operating temperature range from -20°C to +200°C, accommodating both chilled water and steam applications.
- Low Maintenance: Sealed bearing design and resilient elastomeric seals (NBR/EPDM/FPM optional) reduce friction and prolong operational life without frequent servicing.
Key Parameters (Table)
| Parameter | Specification |
|---|---|
| Material | 316L Stainless Steel (CF3M) |
| Disc Material | 316L + Stainless Steel Spring |
| Seal Material | NBR (standard) / EPDM / FPM (optional) |
| Face-to-Face | API 594 / EN 558 |
| Testing Standard | API 598 / ISO 5208 (Rate A) |
| Certification | LR ABS Certified, ISO9001 |
Why Choose Shanghai Zhibang Valve?
As a professional manufacturer located in Shanghai, China, we have served clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East since 2016. Our valves are shipped from Shanghai, Guangzhou, Hong Kong, or Beijing with flexible logistics. Backed by ISO9001 quality management system and a 12-month guarantee, every dual plate check valve undergoes rigorous hydrostatic and pneumatic testing before delivery. We offer competitive factory-direct pricing, customization options (size, seal material, lug type), and responsive technical support — ensuring your marine projects stay on schedule and within budget. Contact us today for a quotation or to request sample testing.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between a dual plate check valve and a swing check valve?
A: Dual plate check valves are lighter, shorter, and more cost-effective. They close faster, reducing water hammer, and are ideal for limited spaces. Swing check valves are bulkier but may handle higher flow rates; for most marine piping, dual plate is preferred. -
Q: Is the LR ABS certification included for all sizes?
A: Yes, our standard production for all sizes DN50-DN600 includes LR and ABS type approval certification unless otherwise specified. Additional certificates (DNV, CCS, BV) are available upon request. -
Q: Can I get a lug type version for dead-end service?
A: Absolutely. We offer optional lug-type body with threaded inserts, allowing removal of downstream piping without draining the system. Please specify when ordering. -
Q: What sealing materials are suitable for seawater?
A: We recommend NBR as standard for seawater; however, EPDM offers better ozone resistance and FPM (Viton) for higher temperature or chemical resistance. Our team can advise based on your fluid and temperature. -
Q: What is the lead time?
A: For standard sizes (DN50-DN300), lead time is typically 15–25 working days after confirmation. Larger sizes or custom orders may require 30–40 days. We offer expedited production for urgent projects. -
Q: Do you provide a test certificate or material certificate?
A: Yes, each valve comes with a hydrostatic test certificate and material traceability certificate (mill test report) upon request. Third-party inspection is also welcome at our factory. -
Q: How does the 12-month guarantee work?
A: We guarantee the valve against manufacturing defects in material and workmanship for 12 months from the date of shipment. Any defective product will be replaced or repaired free of charge, with shipping covered by both parties. -
Q: Can I install this valve vertically or horizontally?
A: The dual plate check valve can be installed in both horizontal and vertical pipelines (upward flow). For vertical downflow, a spring-loaded design is recommended; our standard spring is adequate for most applications. Please consult our engineers for specific conditions.
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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