Contact Platform Support
Help Center
Home > Industrial Equipment & Components > Valve > Butterfly Valve > CB/T4303 Marine Check Valve With Extended Warranty for Seawater Corrosion Resistance
CB/T4303 Marine Check Valve With Extended Warranty for Seawater Corrosion Resistance
Product Spotlights
CB/T4303 standard marine check valve engineered for superior seawater corrosion resistance. Features robust construction with corrosion-resistant alloys/bronze, reliable non-return function, and low pressure drop. Available in flanged/threaded connections with customizable pressure ratings and sizes. Backed by an optional extended warranty and ISO9001 certified manufacturing, ensuring durability and reliability for global marine and offshore applications.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine and offshore seawater systems
Product Standard:
CB/T4303
Material:
Corrosion-resistant alloy or bronze
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
Related Products
-
CB/T4303 Wafer Type Marine Check Valve, DN50 to DN600, Designed for Seawater ServiceNegotiableMOQ: 1 Unit -
CB/T4303 Seawater Check Valve Supplied With Full Material Traceability DocumentationNegotiableMOQ: 1 Unit
-
Marine Engine Room Seawater Line Check Valve, CB/T4303 Standard, Wafer ConnectionNegotiableMOQ: 1 Unit
-
Cast Iron Marine Check Valve for Seawater Piping, CB/T4303 Compliant, PN16 Pressure RatingNegotiableMOQ: 1 Unit
-
Marine Seawater Check Valve With Mill Test Report, Manufactured to CB/T4303 SpecificationNegotiableMOQ: 1 Unit
Application
Other, Marine and offshore seawater systems
Product Standard
CB/T4303
Material
Corrosion-resistant alloy or bronze
Connection Type
Flanged or threaded
Pressure Rating
Customizable
Valve Type
Check Valve (Non-return valve)
Warranty
Extended warranty available
Port Size
Available upon request
As a specialized manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T4303 Marine Check Valve. Engineered specifically for the demanding marine environment, this valve is designed to provide reliable one-way flow control in seawater systems while offering superior resistance to corrosion. Our commitment to quality, backed by an extended warranty, ensures that shipbuilders, offshore platform operators, and marine engineers receive a durable and trustworthy component for critical applications.
The core value of this valve lies in its robust construction and specialized design to combat the highly corrosive nature of seawater. By preventing backflow, it protects pumps, compressors, and other vital equipment from damage, enhancing system safety and longevity. We understand the challenges of maritime operations, which is why our product is built to deliver consistent performance under harsh conditions, reducing maintenance needs and operational downtime for our clients worldwide.
Key Features & Technical Advantages:
- Enhanced Corrosion Resistance: Manufactured from specially selected corrosion-resistant alloys or high-grade bronze that withstand prolonged exposure to seawater, brine, and other marine fluids.
- Reliable Non-Return Function: Ensures fluid flows in one direction only, automatically closing to prevent reverse flow, which is critical for system safety and efficiency.
- Robust Construction: Designed and built in compliance with the CB/T4303 standard for marine valves, guaranteeing structural integrity and suitability for marine applications.
- Low Pressure Drop: Optimized internal design minimizes flow resistance, contributing to energy efficiency in pumping systems.
- Smooth Operation & Quick Response: The valve mechanism allows for swift opening under forward pressure and immediate sealing upon flow cessation or reversal.
- Versatile Installation: Available with flanged or threaded connections to suit various piping configurations onboard vessels or offshore structures.
- Extended Warranty Coverage: Our confidence in the product's durability is demonstrated by an optional extended warranty, providing long-term peace of mind.
Technical Specifications:
| Parameter | Details / Options |
| Product Standard | CB/T4303 |
| Primary Material | Corrosion-Resistant Alloy, Bronze |
| Connection Types | Flanged (RF, FF), Threaded (NPT, BSP) |
| Pressure Rating (PN) | PN10, PN16, PN25, PN40 (Customizable) |
| Port Size Range (DN) | DN15 to DN300 (Available upon request) |
| Seat Seal Material | EPDM, NBR, FKM (Optional) |
| Suitable Media | Seawater, Fresh Water, Brine, Marine Oils |
| Operating Temperature | -20°C to +120°C (Depending on seal material) |
Benefits for Your Operations:
- Increased System Reliability: Prevents backflow-induced damage to expensive equipment, reducing unplanned failures.
- Reduced Maintenance Costs: The corrosion-resistant materials significantly extend service intervals and component life.
- Compliance Assurance: Adherence to the CB/T4303 marine standard ensures the valve meets industry requirements for marine applications.
- Operational Safety: Protects personnel and assets by maintaining proper system pressure and flow direction.
- Global Supply Chain Support: With annual exports valued between US$1-1.5 million and shipments from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to your global projects.
Trust is paramount in the marine industry. Since our establishment in 2016, Shanghai Zhibang Valve has built a solid reputation by serving diverse markets across North and South America, Europe, Asia, Africa, and Oceania. Our ISO9001 certified manufacturing process is a testament to our unwavering commitment to quality control and consistent product performance. The extended warranty offered on this marine check valve is a direct reflection of our confidence in its durability and our dedication to customer satisfaction. For a reliable, corrosion-resistant solution that protects your marine systems, contact us to discuss your specific requirements or request a detailed quotation.
Frequently Asked Questions (FAQ)
-
What does "CB/T4303" mean for this valve?
CB/T4303 is a Chinese national standard specifically for marine valves. It defines the technical requirements, testing methods, and inspection rules for valves used on ships and marine platforms, ensuring they are fit for purpose in marine environments. -
How does this check valve achieve seawater corrosion resistance?
The valve body and critical internal components are constructed from materials specifically chosen for their high resistance to saltwater corrosion, such as specific bronze alloys or nickel-aluminum bronzes. The surface finish and protective treatments are also optimized for marine service. -
What is included in the extended warranty?
The extended warranty is an optional service that provides coverage beyond the standard warranty period for manufacturing defects and material failures under normal operating conditions. Specific terms and duration can be discussed based on the application. -
Can this valve be used for fluids other than seawater?
Yes, while optimized for seawater, it is also suitable for other corrosive or non-corrosive fluids like fresh water, brine, certain oils, and chemicals, provided the fluid compatibility with the selected seal material is confirmed. -
What are the available pressure ratings and sizes?
We offer a range of standard pressure ratings (e.g., PN10 to PN40) and port sizes from DN15 to DN300. Custom sizes and pressure classes can be engineered to meet specific project needs. -
What type of connection ends are available?
The valve is typically available with flanged ends (Raised Face or Flat Face) or threaded ends (NPT or BSP). The choice depends on your existing piping system design. -
Do you provide testing reports or certifications?
As an ISO9001 certified manufacturer, we conduct rigorous factory acceptance tests, including shell tests and seat tests. Relevant test reports can be provided upon request. -
What is your lead time and shipping capability?
We ship globally from major Chinese ports. Lead time depends on order quantity and specifications. For standard models, it is generally competitive, and we work closely with clients to meet project timelines.
Send Inquiry to This Supplier
* Email
Want the best price?
Post an RFQ now!
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
You May Also Like
-
CB/T4303 Check Valve for Seawater Cooling Systems on Marine VesselsNegotiableMOQ: 1 Unit
-
CB/T4303 Marine Check Valve For Seawater, Cast Iron Body With 316 Stainless Steel Trim, PN10/PN16NegotiableMOQ: 1 Unit
-
Seawater System Marine Check Valve Compliant With CB/T4303 Standard, Full Port DesignNegotiableMOQ: 1 Unit
-
CB/T4303 Stainless Steel Check Valve With 18-Month Warranty Against Material and Workmanship DefectsNegotiableMOQ: 1 Unit
-
CB/T4303 304 Stainless Steel Check Valve for Marine Piping Systems, PN1.6MPa, DN15-DN100NegotiableMOQ: 1 Unit
-
CB/T4303 Dual Plate Wafer Check Valve, 316 Stainless Steel Body & Disc, Low Pressure Drop DesignNegotiableMOQ: 1 Unit
-
CB/T4303 Stainless Steel Check Valve for Shipboard Seawater Cooling and Ballast SystemsNegotiableMOQ: 1 Unit
-
CB/T4303 Wafer Check Valve for Chemical Transfer Lines in Pharmaceutical ProcessingNegotiableMOQ: 1 Unit
-
CB/T4303 Marine Grade Stainless Steel Check Valve, With Bypass and Test Connection, for Fuel Oil LinesNegotiableMOQ: 1 Unit
-
DN50 DN80 DN100 CB/T4303 Stainless Steel Swing Check Valve, PN2.5MPa, Flange End ConnectionNegotiableMOQ: 1 Unit
