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CB/T4303 Swing Check Valve for Marine Seawater Applications, 200mm to 600mm Size Range
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CB/T 4303 compliant marine swing check valve designed for seawater systems. Features a 200-600mm size range, corrosion-resistant material options (cast iron, bronze, stainless steel), and flanged connections. Ensures reliable backflow prevention, low pressure drop, and easy maintenance. Ideal for ship cooling, ballast, and firefighting lines, backed by ISO9001 manufacturing and global export experience.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine Seawater Systems
Product Type:
Swing Check Valve
Size Range:
200mm to 600mm
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine Seawater Systems
Product Type
Swing Check Valve
Size Range
200mm to 600mm
Design Standard
CB/T 4303
Body Material
Cast Iron, Bronze, Stainless Steel
Disc Material
Bronze, Stainless Steel
Seat Material
Rubber, Metal
Connection Type
Flanged
Pressure Rating
PN10 to PN16
Suitable Fluid
Seawater, Fresh Water
As a professional manufacturer specializing in marine valves, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T 4303 Swing Check Valve, engineered specifically for demanding seawater applications. With our ISO9001-certified manufacturing processes and a decade of expertise since our establishment in 2016, we deliver valves that combine reliability, durability, and performance for global maritime operations. Our valves are designed to prevent backflow effectively in ship piping systems, ensuring operational safety and system integrity in harsh marine environments.
This valve is a critical component for maintaining unidirectional flow in various marine systems. Its robust construction and adherence to the CB/T 4303 standard make it a trusted choice for shipbuilders and marine engineers worldwide.
Key Features and Technical Advantages:
- Robust Construction for Marine Duty: The valve body is typically manufactured from high-grade cast iron, bronze, or corrosion-resistant stainless steel, selected based on application requirements. The swing disc, often made from bronze or stainless steel, ensures smooth operation and long service life against abrasive seawater.
- Effective Backflow Prevention: The hinged disc swings open in the direction of flow and automatically closes by gravity and flow reversal, providing a reliable seal to prevent backflow, which is crucial for protecting pumps and other equipment.
- Low Pressure Drop Design: The full-port design minimizes flow resistance and pressure loss across the valve, contributing to energy efficiency in the ship's piping systems.
- Easy Maintenance and Inspection: Many models feature a bolted cover or cap that allows for easy internal inspection, disc replacement, or seat maintenance without removing the entire valve from the pipeline, reducing downtime and maintenance costs.
- Versatile Size Range: Available in a comprehensive size range from 200mm (8") to 600mm (24"), catering to a wide variety of pipe diameters commonly used in marine seawater lines for cooling, ballast, firefighting, and bilge systems.
- Compliance with Marine Standards: Manufactured in accordance with the CB/T 4303 standard, which specifies requirements for marine valves, ensuring compatibility and reliability within shipbuilding specifications.
Technical Specifications Table:
| Parameter | Specification / Option |
|---|---|
| Product Standard | CB/T 4303 |
| Nominal Size (DN) | 200, 250, 300, 350, 400, 450, 500, 600 mm |
| Pressure Rating (PN) | PN10, PN16 (Other ratings available upon request) |
| Body Material | Cast Iron, Bronze, Ductile Iron, Stainless Steel (e.g., CF8M) |
| Disc Material | Bronze, Stainless Steel, Coated Carbon Steel |
| Seat Material | Rubber (NBR, EPDM), Metal (Stainless Steel) |
| Connection Type | Flanged (RF, FF), as per standard dimensions |
| Suitable Media | Seawater, Fresh Water, Oily Water, Ballast Water |
| Operating Temperature | Depends on seat material; typically -10°C to 80°C for rubber seats |
Benefits for Your Marine Operations:
- Enhanced System Safety: Prevents reverse flow that could damage pumps, cause water hammer, or disrupt system balance, thereby protecting valuable onboard assets.
- Reduced Maintenance Costs: Durable materials resistant to seawater corrosion and a design facilitating easy service extend valve life and lower total cost of ownership.
- Operational Reliability: Consistent performance under varying flow conditions ensures dependable operation of critical seawater systems, from engine cooling to fire mains.
- Global Supply Chain Support: With annual export values between US$1-1.5 million and shipment ports including Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to key markets across North America, South America, Europe, Asia, Africa, and Oceania.
Our commitment to quality is backed by our ISO9001 certification, ensuring every CB/T 4303 Swing Check Valve meets stringent production standards. With a proven track record of supplying to diverse international markets, Shanghai Zhibang Valve has established itself as a reliable partner for marine valve solutions. We invite you to leverage our manufacturing expertise and global logistics network to secure a dependable supply of high-performance check valves tailored for your specific seawater application needs. Contact us today for a detailed quotation or technical consultation.
Frequently Asked Questions (FAQ):
-
Q: What is the primary function of this swing check valve in a seawater system?
A: Its primary function is to allow fluid flow in one direction only and automatically prevent backflow when the flow stops or reverses. This protects pumps, maintains system pressure, and prevents contamination between different lines. -
Q: Why is the CB/T 4303 standard important for marine valves?
A: CB/T is a Chinese national standard specifically for shipbuilding equipment. Valves conforming to CB/T 4303 are designed and tested to meet the rigorous requirements for marine applications, ensuring compatibility, safety, and reliability in shipboard environments. -
Q: Can this valve handle other fluids besides seawater?
A: Yes, while optimized for seawater, it is suitable for various non-aggressive liquids like fresh water, oily water, and ballast water. The material selection (e.g., stainless steel for corrosive media) should be confirmed based on the specific fluid properties. -
Q: What factors should I consider when selecting the valve material?
A> Key factors include the corrosiveness of the seawater (which varies by region), system pressure and temperature, required service life, and budget. We offer material guidance to help you choose the most cost-effective and durable option. -
Q: Is the valve suitable for vertical installation?
A: Standard swing check valves are typically designed for horizontal installation where the disc can swing freely. For vertical lines with upward flow, specific designs or a different valve type (like a lift check valve) might be recommended. Please consult our engineers for your specific layout. -
Q: What is the lead time for an order of 600mm valves?
A: Lead times vary based on material, quantity, and current production schedule. Generally, standard materials in common sizes have shorter lead times. As a manufacturer, we can provide accurate timelines upon receipt of your detailed specifications. -
Q: Do you provide certifications with the valves?
A> Yes, we can provide a material test report and a certificate of compliance. Our manufacturing facility is ISO9001 certified, which governs our quality management system. -
Q: How do I determine the correct pressure rating (PN) for my application?
A: The pressure rating should be equal to or greater than the maximum working pressure in your system, including potential surge pressures. Common ratings are PN10 and PN16 for many marine seawater services.
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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