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CB/T4303 Seawater Check Valve Supplied With Full Material Traceability Documentation
Product Spotlights
CB/T4303 marine check valve designed for seawater systems, featuring corrosion-resistant alloy construction for durability. Its standout offering is complete material traceability documentation (MTRs), ensuring quality compliance for audits and class approvals. Available in various sizes/pressures with flanged, threaded, or welded ends. Manufactured under ISO9001 by an exporter with a global client base.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, Marine and offshore seawater systems
Product Standard:
CB/T4303
Material:
Corrosion-resistant alloys (e.g., bronze, stainless steel)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine and offshore seawater systems
Product Standard
CB/T4303
Material
Corrosion-resistant alloys (e.g., bronze, stainless steel)
Traceability
Full material traceability documentation provided
Connection Type
Flanged, threaded, or welded ends available
Pressure Rating
Customizable based on system requirements
Size Range
Available in various nominal diameters
Certification
Manufacturer holds ISO9001 quality management system certification
As a professional manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance, reliable marine valves to a global clientele spanning from North America to Southeast Asia. Our CB/T4303 Seawater Check Valve, supplied with comprehensive material traceability documentation, represents our commitment to quality and transparency in the demanding marine and offshore industries. This valve is engineered to prevent backflow in seawater systems, ensuring operational safety and system integrity. With annual export values demonstrating our market trust and an ISO9001-certified production process, we deliver products that meet rigorous international standards for performance and accountability.
The core value of this valve lies in its robust construction and the unparalleled transparency offered by its full material traceability. In sectors where failure is not an option, knowing the exact origin and composition of every component provides critical assurance. This valve is designed for longevity and reliability in corrosive seawater environments, making it an essential component for shipbuilding, offshore platforms, desalination plants, and coastal power stations.
Key Features & Technical Advantages:
- Superior Corrosion Resistance: Manufactured from premium corrosion-resistant alloys such as bronze, stainless steel (316/316L), or duplex stainless steel, specifically selected to withstand prolonged exposure to seawater, chlorides, and other harsh marine elements.
- Reliable Backflow Prevention: Features a precision-engineered swing or lift check mechanism that ensures swift, positive sealing upon flow reversal, protecting pumps and other upstream equipment from damage.
- Full Material Traceability: Each valve is supplied with complete documentation detailing the material grade, heat number, mill test reports (MTRs), and origin for all major components. This is crucial for quality audits, regulatory compliance, and maintenance planning.
- Compliance with CB/T4303 Standard: Designed and manufactured in strict accordance with the Chinese CB/T4303 standard for marine valves, ensuring dimensional accuracy, performance criteria, and testing protocols suitable for marine applications.
- Low Pressure Drop Design: The internal flow path is optimized to minimize turbulence and pressure loss, contributing to energy efficiency in fluid transport systems.
- Robust Construction for High Pressure: Engineered to handle the pressure demands of various seawater systems, with pressure ratings customizable to specific project requirements.
- Versatile End Connections: Available with flanged, threaded, or welded ends to seamlessly integrate into existing piping systems, offering flexibility for different installation scenarios.
Technical Specifications:
| Parameter | Details |
|---|---|
| Design Standard | CB/T4303 |
| Nominal Pressure (PN) | PN10, PN16, PN25, PN40 (or Class 150, 300 as applicable) |
| Nominal Diameter (DN) | DN15 to DN500 (1/2" to 20") and larger sizes available upon request |
| Body Material | Bronze, Cast Steel, Stainless Steel 316/316L, Duplex Stainless Steel |
| Trim Material | Stainless Steel, Bronze (compatible with body material) |
| Seat Type | Metal-to-metal or soft seat (e.g., EPDM, NBR) options |
| Connection Ends | Flanged (RF, RTJ), Threaded (NPT, BSP), Butt Weld |
| Applicable Fluid | Seawater, Brackish Water, Other Corrosive Marine Fluids |
| Testing | Shell Test, Seat Test, Material Chemical & Physical Test Reports Provided |
Benefits for Your Operations:
- Enhanced System Safety: Prevents reverse flow effectively, safeguarding critical equipment and preventing operational downtime.
- Reduced Lifecycle Costs: The corrosion-resistant materials and robust design minimize maintenance needs and extend service intervals, lowering total cost of ownership.
- Simplified Compliance & Auditing: Full traceability documentation streamlines the process for regulatory approvals, class society certifications (like ABS, DNV, LR), and internal quality audits.
- Global Supply Chain Support: With shipment capabilities from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure reliable and timely delivery to your project sites worldwide.
Shanghai Zhibang Valve's proven track record is built on supplying valves to diverse markets across North America, South America, Europe, Asia, Africa, and Oceania. Our annual export value of US$1-1.5 million is a testament to the consistent quality and reliability our global partners have come to expect. Operating from our base in Shanghai with ISO9001-certified processes, we guarantee that every CB/T4303 Seawater Check Valve is not just a product, but a documented component of your system's reliability. Choose a valve that combines proven marine engineering with complete material transparency. Contact us today to discuss your specific requirements and receive a detailed quotation.
Frequently Asked Questions (FAQ)
-
What does "full material traceability documentation" include?
It includes Mill Test Reports (MTRs) or Certificates of Conformity for the body, disc, stem, and other primary components. These documents detail the material chemical composition, mechanical properties, heat number, and the manufacturer's information, providing a complete pedigree for quality assurance. -
Is this valve suitable for high-pressure seawater applications?
Yes. The valve is designed per the CB/T4303 standard and can be manufactured to various pressure ratings (e.g., PN16 to PN40 or higher). The specific pressure class should be specified during inquiry based on your system's maximum working pressure. -
Can you provide valves with specific end connections not listed?
Absolutely. While flanged, threaded, and welded ends are standard, we offer customization. Please provide the required standard (e.g., ASME, JIS) and connection details for a tailored solution. -
How does the CB/T4303 standard compare to other marine valve standards like ANSI/ASME?
CB/T4303 is a Chinese national standard specifically for marine valves, covering dimensions, materials, pressure-temperature ratings, and testing. It is widely accepted in shipbuilding. We ensure our valves meet the functional equivalency required for international projects and can discuss compliance with other standards like ANSI/ASME upon request. -
What is the typical lead time for an order?
Lead time depends on the order quantity, size, material, and pressure rating. Standard configurations typically have shorter lead times. We provide accurate delivery estimates upon receipt of your detailed specifications. -
Do you offer soft-seated versions for better sealing?
Yes. While metal-to-metal seats are standard for durability, we can optionally equip the valve with soft seats (e.g., EPDM, NBR) inserted into the disc or body to achieve bubble-tight shutoff where required. -
What post-sales support do you provide?
We provide technical documentation, including installation and maintenance manuals. Our support team is available for technical consultations. Spare parts for wear components like the disc and seat are also available. -
Are your valves accepted by international marine classification societies?
Our manufacturing process is ISO9001 certified, which is a fundamental requirement for many class societies. The provided full material traceability documentation is essential for obtaining approvals from societies like ABS, DNV, BV, or LR. We assist customers in the certification process as needed.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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