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CB/T4303 304 Stainless Steel Check Valve for Marine Piping Systems, PN1.6MPa, DN15-DN100
Product Spotlights
Marine-grade 304 stainless steel check valve compliant with CB/T4303 standard. Designed for PN1.6MPa pressure in seawater and shipboard systems, sizes DN15-DN100. Features automatic operation, excellent corrosion resistance, and customizable end connections (flanged/threaded) to global standards. Enhances system safety by preventing backflow, reduces maintenance, and offers reliable performance in harsh marine environments. ISO9001 certified manufacturing ensures consistent quality.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T4303
Application:
Other, Marine Piping Systems
Material:
304 Stainless Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
CB/T4303
Application
Other, Marine Piping Systems
Material
304 Stainless Steel
Pressure Rating
PN1.6MPa
Size Range
DN15 to DN100
Connection Type
Optional (e.g., Flanged, Threaded)
Valve Type
Check Valve / Non-Return Valve
Seat Material
Stainless Steel or Optional PTFE
Operation
Automatic (Flow-actuated)
End Connection Standard
GB, ANSI, JIS, DIN (Customizable)
As a professional manufacturer with a strong focus on marine applications, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T4303 304 Stainless Steel Check Valve. Engineered specifically for demanding marine piping systems, this valve is designed to prevent backflow and ensure unidirectional flow with high reliability under a pressure rating of PN1.6MPa. Our years of experience since 2016, backed by ISO9001-certified manufacturing processes, ensure that each valve delivers the durability and corrosion resistance required for harsh seawater and onboard environments, protecting your critical systems from costly failures.
This valve is a cornerstone for maintaining system integrity. Its automatic operation eliminates the need for manual intervention, making it ideal for automated marine systems. Below, we detail its key features, technical specifications, and the tangible benefits it brings to your operations.
Core Features & Technical Advantages:
- Superior Corrosion Resistance: Constructed from premium 304 stainless steel, the valve offers excellent resistance to seawater, chlorides, and a wide range of chemicals commonly found in marine applications, ensuring a long service life.
- Robust Pressure Handling: Rated for PN1.6MPa, it reliably maintains system pressure and prevents backflow in various shipboard systems, including ballast, bilge, cooling, and fuel lines.
- Compliant Design: Manufactured in accordance with the Chinese marine standard CB/T4303, ensuring compatibility and reliability for vessels following these specifications.
- Precise Sealing: The valve seat, typically made from matched stainless steel or optional PTFE, provides a tight seal with minimal pressure loss, enhancing system efficiency.
- Wide Size Availability: Available in a comprehensive range from DN15 to DN100, allowing for seamless integration into both small-bore instrumentation lines and larger main piping circuits.
- Low Maintenance: Simple, robust design with minimal moving parts reduces the need for frequent maintenance, a critical advantage in hard-to-access marine installations.
- Versatile End Connections: We can supply valves with various end connections (flanged, threaded) machined to standards like GB, ANSI, JIS, or DIN to match your existing pipeline infrastructure.
Technical Specifications Table:
| Parameter | Specification |
|---|---|
| Product Standard | CB/T4303 |
| Body Material | 304 Stainless Steel (CF8M upon request) |
| Pressure Rating (PN) | 1.6 MPa |
| Nominal Diameter (DN) | 15, 20, 25, 32, 40, 50, 65, 80, 100 |
| Seat Material | Standard: Stainless Steel | Optional: PTFE |
| Connection Type | Flanged (FF, RF) or Threaded (NPT, BSPT/BSPP) |
| Temperature Range | -20°C to +200°C (depending on seat material) |
| Flow Direction | Unidirectional (Arrow marked on body) |
Benefits for Your Marine Operations:
- Enhanced System Safety: Prevents dangerous backflow in critical systems like fire mains or fuel lines, protecting equipment and crew.
- Reduced Downtime: High reliability and corrosion resistance minimize unexpected failures and associated repair downtime.
- Operational Efficiency: Ensures fluid flows in the correct direction, optimizing pump performance and overall system efficiency.
- Global Compliance Support: As we export to markets worldwide including North America, Europe, and Southeast Asia, we understand diverse regional requirements and can advise on compliance.
- Cost-Effective Solution: The combination of durability, low maintenance, and long service life provides a favorable total cost of ownership.
Trust in a supplier with a proven track record. Shanghai Zhibang Valve, established in 2016, combines ISO9001 quality management with an annual export value reflecting our global reach and customer trust. Our products are shipped from major ports like Shanghai and Guangzhou, ensuring efficient logistics to your location, whether in Eastern Europe, Oceania, or the Americas. Choose our CB/T4303 Check Valve for a robust, compliant, and reliable component that strengthens your marine piping systems. Contact us today to discuss your specific DN size and connection requirements, and experience the difference that professional manufacturing brings.
Frequently Asked Questions (FAQ):
-
Q: Is this check valve suitable for seawater applications?
A: Yes, absolutely. The use of 304 stainless steel provides excellent corrosion resistance against seawater, making it a standard choice for marine ballast, cooling, and other seawater systems. -
Q: Can I get this valve with ANSI flanges instead of the standard connections?
A: Yes, customization is available. While we manufacture to the CB/T4303 standard for the valve itself, we can machine flanges to ANSI, JIS, DIN, or other international standards upon request to ensure a perfect fit with your existing pipelines. -
Q: What is the main difference between your valve and a standard industrial check valve?
A: Our valve is specifically designed and tested for marine environments. It adheres to the marine-specific CB/T4303 standard, which often involves more rigorous material and testing requirements for shock, vibration, and corrosion compared to general industrial standards. -
Q: Does the valve require any external power or signal to operate?
A: No, it operates automatically. It is a purely mechanical device that opens with forward flow pressure and closes automatically to prevent reverse flow when the upstream pressure drops. -
Q: What is the lead time for an order of DN50 valves?
A: Lead times vary based on order quantity and specific configuration (like connection type). Generally, for standard DN50 sizes, we maintain stock for quick shipment. Please contact us with your quantity for an accurate delivery schedule. -
Q: Are certifications like Material Test Reports provided?
A: Yes, as an ISO9001-certified manufacturer, we can provide standard material certifications and inspection reports. Specific third-party certifications can be arranged subject to request and additional charges. -
Q: Is the PN1.6MPa rating suitable for high-pressure fuel lines?
A: PN1.6MPa is a common rating for many marine auxiliary systems. However, for specific high-pressure fuel applications, please confirm your system's maximum working pressure. We can also discuss valves with higher pressure ratings if needed. -
Q: Do you offer a warranty on these valves?
A: Yes, we offer a standard warranty against manufacturing defects. The specific warranty period and terms are provided with our commercial quotation and are based on the application and agreed conditions.
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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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