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CB/T4303 Butterfly Check Valve for High-Flow Marine Applications
Product Spotlights
CB/T4303 compliant dual-function valve for marine use. Combines butterfly flow control with check valve backflow prevention in one compact unit. Designed for high-flow efficiency in seawater, ballast, and cooling systems. Offers material options for corrosion resistance, easy maintenance, and global standard acceptance. Simplifies piping layouts and enhances system safety.
Negotiable
MOQ: 10 Units (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
Other, CB/T4303
Application:
Other, High-Flow Marine Applications
Material:
Other, Cast Steel, Stainless Steel (Optional)
Payment & Shipping
Payment Methods:
Port of Shipment:
shanghai
Delivery Detail:
7 days
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Standard
Other, CB/T4303
Application
Other, High-Flow Marine Applications
Material
Other, Cast Steel, Stainless Steel (Optional)
Product Type
Butterfly Check Valve
Connection Type
Flanged
Flow Capacity
High Flow Rate
Size Range
DN50 - DN600 (Customizable)
Pressure Rating
PN10 - PN16 (Available upon request)
Sealing Type
Rubber Seal, Metal Seal (Optional)
Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016 and certified with ISO9001, specializes in manufacturing high-performance valves for demanding marine environments. Our CB/T4303 Butterfly Check Valve is engineered to meet the rigorous requirements of high-flow marine applications, ensuring reliable flow control and backflow prevention in critical systems.
This valve combines the operational efficiency of a butterfly valve with the safety function of a check valve, offering a compact and cost-effective solution for shipbuilding, offshore platforms, and port infrastructure. Designed for durability and ease of maintenance, it is a trusted component for engineers seeking robust performance in seawater, ballast, cooling, and other high-volume fluid handling systems.
Key Features & Technical Specifications:
- Integrated Design: Functions as both a flow control valve and a non-return valve, eliminating the need for separate components and simplifying piping layouts.
- High Flow Efficiency: The disc design minimizes flow resistance, allowing for efficient passage of large volumes of fluid, which is essential for marine cooling, ballast, and fire-fighting systems.
- Robust Construction: Typically constructed from materials like cast steel or optional stainless steel to withstand corrosive marine environments and high pressures.
- Reliable Sealing: Utilizes high-quality rubber or optional metal seals to ensure tight closure and prevent backflow, even under variable pressure conditions.
- Easy Operation & Maintenance: The butterfly mechanism allows for quick opening and closing. The design facilitates easy inspection and seal replacement without extensive disassembly.
- Standard Compliance: Manufactured according to the CB/T4303 standard, ensuring compatibility with marine industry specifications and practices.
Detailed Parameters (Common Configurations):
| Parameter | Specification / Range | Notes |
|---|---|---|
| Nominal Diameter (DN) | 50, 100, 150, 200, 250, 300, 400, 500, 600 | Other sizes are customizable. |
| Pressure Rating (PN) | 10, 16 | Higher ratings available upon request. |
| Connection Type | Flanged | Standard flange dimensions per CB/T4303. |
| Body Material | Cast Steel (WCB) | Stainless Steel (CF8/CF8M) is optional. |
| Disc Material | Cast Steel / Stainless Steel | Material matches or exceeds body material grade. |
| Seal Material | EPDM / NBR Rubber | Metal seals (Stainless Steel) optional for high-temp. |
| Operation | Manual (Handwheel/Lever) or Actuated | Electric, pneumatic, or hydraulic actuators customizable. |
Advantages & Customer Benefits:
- Space & Cost Savings: The dual-function design reduces the number of valves needed in a system, saving space on crowded marine decks and lowering overall procurement and installation costs.
- Enhanced System Safety: Automatic backflow prevention protects pumps and sensitive equipment from damage due to reverse flow, increasing the reliability and safety of marine fluid systems.
- Improved Flow Management: Allows for precise control of large fluid volumes while ensuring flow direction is maintained, optimizing the performance of cooling, ballast transfer, and tank filling operations.
- Long Service Life: Built with corrosion-resistant materials and durable seals, the valve offers extended service intervals and reduces maintenance downtime in harsh saltwater environments.
- Global Compatibility: Adherence to the CB/T4303 standard ensures the valve is recognized and accepted in shipbuilding markets worldwide, facilitating easier integration into international projects.
With an annual export value ranging between US$1 Million and US$1.5 Million and serving markets across North America, South America, Europe, Asia, Africa, and Oceania, Shanghai Zhibang has established a global reputation for quality and reliability. Our valves are shipped from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, ensuring efficient logistics. The CB/T4303 Butterfly Check Valve embodies our commitment to providing specialized, high-performance solutions for the marine industry. Its design directly addresses the need for efficient, safe, and durable flow control in high-capacity applications. For engineers and procurement specialists working on marine projects, this valve offers a proven, standardized component that simplifies design, enhances safety, and reduces long-term operational costs.
Frequently Asked Questions (FAQ)
-
What is the primary function of a butterfly check valve?
It serves two primary functions: regulating or stopping flow like a standard butterfly valve, and automatically preventing backflow (reverse flow) like a check valve when the disc closes. -
How does this valve prevent backflow?
The disc is designed to close automatically when forward flow pressure drops or reverse flow pressure increases, sealing against the seat to block the reverse direction of fluid. -
Is this valve suitable for seawater applications?
Yes, it is specifically designed for marine applications. Standard materials like cast steel are protected with coatings, and optional stainless steel construction is available for highly corrosive seawater service. -
What sizes are typically available?
Common sizes range from DN50 to DN600. We can manufacture valves in sizes outside this standard range based on customer requirements. -
Can the valve be operated automatically?
Yes. While manual operation (handwheel or lever) is standard, the valve can be fitted with electric, pneumatic, or hydraulic actuators for remote or automated control systems. -
What maintenance is required?
Periodic inspection of the disc and seal is recommended. The seal can typically be replaced without removing the entire valve from the pipeline, simplifying maintenance. -
Does compliance with CB/T4303 ensure international acceptance?
The CB/T4303 standard is a Chinese national standard for shipbuilding valves, which is widely recognized and accepted in international marine projects, particularly those involving Chinese shipyards or standards. -
What is the typical delivery time?
For standard sizes and configurations, delivery time can be relatively short. For customized orders (special materials, sizes, or actuators), lead time will be communicated based on the specific requirements.
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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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