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CB/T4303 Standard Counterweight Swing Check Valve for Ship Piping, PN4.0MPa
Product Spotlights
CB/T4303 standard marine check valve with PN4.0MPa rating. Features a unique counterweight design for non-slam, water-hammer-free closure, protecting ship pipelines. Robust cast steel construction ensures durability in marine environments. Automatic operation prevents backflow, enhancing system safety and reliability. ISO9001 certified manufacturer with global export experience.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T4303
Application:
Other, Ship Piping Systems
Pressure Rating:
PN4.0MPa
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, Ship Piping Systems
Pressure Rating
PN4.0MPa
Type
Counterweight Swing Check Valve
Design
Swing Check with Counterweight
Connection
Flanged (Standard)
Material
Cast Steel/Carbon Steel
Sealing
Metal-to-Metal or Soft Seal
Operation
Automatic, Non-Slam
As a dedicated manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-performance marine valves. Our CB/T4303 Standard Counterweight Swing Check Valve for Ship Piping, rated at PN4.0MPa, is engineered to meet the rigorous demands of maritime fluid control. This valve ensures reliable backflow prevention in ship piping systems, contributing to operational safety and system integrity. With years of expertise since our establishment in 2016, we deliver valves that combine robust construction with precise functionality, serving global markets from North America to Southeast Asia.
This valve is designed specifically for marine applications, where reliability and durability are paramount. The counterweight mechanism is a key feature, designed to minimize water hammer and provide a smooth, non-slam closure, protecting pipelines from shock damage. Its construction adheres to the CB/T4303 standard, ensuring compatibility and performance within shipbuilding specifications.
Core Features & Technical Specifications:
- Standard Compliance: Manufactured strictly according to CB/T4303, the Chinese ship standard, guaranteeing suitability for marine piping systems.
- Pressure Capacity: Rated for PN4.0MPa (approximately 40 bar), making it suitable for medium to high-pressure lines onboard vessels.
- Unique Counterweight Design: The integrated counterweight allows for controlled disc closure, reducing impact velocity and preventing slam, which is crucial for long-term pipeline health.
- Robust Construction: Typically constructed from cast steel or carbon steel, offering excellent resistance to corrosion and mechanical stress in marine environments.
- Sealing Options: Available with metal-to-metal seals for high-temperature applications or soft seals (like resilient inserts) for tighter shut-off where required.
- Flow Direction Control: Automatically closes when flow stops or reverses, preventing backflow and protecting pumps and other equipment.
- Low Maintenance: Simple design with few moving parts leads to reduced maintenance needs and long service life.
- Flanged Connections: Standard flanged ends facilitate easy installation and integration into existing ship piping networks.
Benefits for Your Operations:
- Enhanced System Safety: Prevents reverse flow, safeguarding critical systems like cooling, bilge, ballast, and fuel lines.
- Pipeline Protection: The non-slam closure feature significantly reduces water hammer, minimizing stress on pipes, fittings, and supports.
- Operational Reliability: Ensures consistent one-way flow, contributing to stable system performance and reducing downtime risks.
- Cost Efficiency: Durable build and low maintenance translate into lower long-term operational and replacement costs.
- Regulatory Compliance: Using a CB/T4303 standard valve helps meet relevant marine equipment specifications and standards.
Key Technical Parameters (Typical):
| Parameter | Value / Description |
| Design Standard | CB/T4303 |
| Pressure Rating (PN) | 4.0 MPa |
| Valve Type | Swing Check Valve with Counterweight |
| Primary Application | Ship Piping Systems |
| Connection Type | Flanged (Standard sizes available) |
| Body Material (Typical) | Cast Steel / Carbon Steel |
| Seal Type | Metal or Resilient (customizable) |
| Operation | Automatic, Non-Slam Closure |
Shanghai Zhibang Valve's commitment to quality is backed by our ISO9001 certification and a track record of exporting to diverse markets worldwide, including North America, Europe, Asia, and Africa. With an annual export value ranging between US$1 Million and US$1.5 Million, our products have proven their reliability in demanding applications. Our valves are shipped from major ports like Shanghai, Guangzhou, and Hong Kong, ensuring efficient logistics. Choosing our CB/T4303 Counterweight Swing Check Valve means selecting a product built with marine-grade precision, designed for longevity, and supported by a manufacturer with solid international experience. Contact us to discuss how this valve can enhance the safety and efficiency of your ship's piping systems.
Frequently Asked Questions (FAQ):
-
Q: What is the main advantage of the counterweight in this swing check valve?
A: The counterweight provides controlled disc closure, significantly reducing the closing speed and impact force. This non-slam feature prevents water hammer, protecting the pipeline system from shock damage and vibration, which is critical for marine applications. -
Q: Is this valve suitable for other applications besides ship piping?
A: While it is specifically designed and standardized (CB/T4303) for marine use, its robust construction and pressure rating may make it suitable for other industrial piping systems requiring similar performance, such as certain offshore or industrial plant applications. Consultation is recommended for non-marine uses. -
Q: What materials are typically used for the valve body and internals?
A: The standard body material is cast steel or carbon steel, chosen for its strength and corrosion resistance in marine environments. Internal components like the disc and hinge are also made from durable metallic materials. Specific material grades can be confirmed upon request. -
Q: How does the PN4.0MPa rating relate to actual working pressure?
A: PN4.0MPa indicates a nominal pressure rating of 4.0 Megapascals (approximately 40 bar). This defines the maximum pressure the valve is designed to handle continuously under standard conditions. It is suitable for medium to high-pressure lines onboard ships. -
Q: Are different sizes and flange standards available?
A: Yes. While the product adheres to the CB/T4303 standard, various nominal diameters (sizes) are typically available. Flange dimensions can correspond to common standards. Specific size and flange details should be provided based on your requirements. -
Q: What is the maintenance requirement for this valve?
A: Due to its simple swing check design with a counterweight, maintenance requirements are generally low. Periodic inspection for wear, proper sealing, and free movement of the disc is recommended. The design allows for relatively straightforward servicing if needed. -
Q: Does the valve require any external power or control to operate?
A: No. It is a fully automatic valve. The flow itself opens the disc, and the counterweight-assisted gravity closure happens when flow stops or reverses. No external power, actuators, or control systems are needed. -
Q: Can I get valves with different sealing types?
A: Yes. Sealing options are often customizable. Standard offerings may include metal-to-metal seals for high-temperature resilience or seals with soft inserts (like rubber) for tighter shut-off in certain applications. Please specify your sealing preference during inquiry.
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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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