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Help CenterMarine Suction Strainer Types A/AS/BR/BRS per CB/T497-94
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As a leading manufacturer with a strong commitment to maritime fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our comprehensive range of Marine Suction Strainers manufactured strictly in accordance with the CB/T497-94 standard. Established in 2016 and backed by ISO9001 certification, we understand the critical need for reliable and robust filtration in marine applications. Our strainers, including Types A, AS, BR, and BRS, are engineered to provide superior protection for pumps and critical systems by effectively filtering debris from seawater intakes, ensuring operational continuity and reducing maintenance costs for ship operators worldwide.
Our marine suction strainers are designed to meet the rigorous demands of the shipping industry. They serve as the first line of defense for seawater cooling systems, firefighting systems, ballast systems, and other vital onboard applications. By preventing shells, seaweed, plastic, and other particulates from entering and damaging pumps, valves, and heat exchangers, our strainers contribute significantly to vessel safety and efficiency. The design adheres to the Chinese shipbuilding standard CB/T497-94, which specifies requirements for construction, performance, and testing, ensuring compatibility and reliability for a wide array of vessel types.
Key Features & Technical Advantages:
- Standard-Compliant Design: Manufactured per CB/T497-94, guaranteeing dimensional accuracy, pressure ratings, and material specifications suitable for marine service.
- Model Variety for Specific Needs: We offer Types A, AS, BR, and BRS to cater to different flow requirements, connection preferences, and space constraints onboard.
- Durable Construction: The strainer body is typically constructed from robust materials like cast iron or cast steel, with options for stainless steel for enhanced corrosion resistance. The screen basket is commonly made from corrosion-resistant copper or stainless steel mesh.
- Efficient Filtration: The cylindrical screen basket provides a large filtration area, minimizing pressure drop while effectively capturing debris. The design allows for easy visual inspection and access for cleaning.
- Flanged Connections: Standard flanged connections ensure a secure, leak-proof integration into the pipeline, simplifying installation and maintenance procedures.
- Versatile Installation: Suitable for both vertical and horizontal pipeline mounting, offering flexibility in the often space-limited engine room layouts.
Detailed Specifications Table:
| Parameter | Specification |
|---|---|
| Applicable Standard | CB/T497-94 |
| Available Models | Type A, Type AS, Type BR, Type BRS |
| Primary Application | Marine seawater suction lines for cooling, firefighting, ballast, etc. |
| Nominal Pressure (PN) | Commonly PN10, PN16 (Specific rating depends on model and material) |
| Connection Standard | Flanged per GB, ANSI, JIS, or DIN standards (Specify when ordering) |
| Body Material Options | Cast Iron (HT200/250), Cast Steel (WCB), Stainless Steel (304/316) |
| Screen Basket Material | Copper, Stainless Steel (304/316) |
| Screen Mesh Size | Customizable (e.g., 3mm, 5mm, 8mm holes) |
| Flow Direction | Typically inlet tangential, outlet axial (Model dependent) |
Benefits for Our Clients:
- Enhanced System Protection: Safeguards expensive pumps and downstream equipment from abrasive damage and clogging, extending their service life.
- Reduced Operational Downtime: Easy-to-clean design allows for quick maintenance, minimizing the time systems are offline.
- Improved System Efficiency: A clean strainer ensures optimal flow rates and heat exchange efficiency in cooling systems.
- Compliance & Compatibility: Adherence to CB/T497-94 ensures the strainer meets recognized industry standards for new builds and retrofit projects.
- Global Supply Chain Support: With annual exports valued between US$1-1.5 Million and major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we efficiently serve a global clientele across North America, South America, Europe, Asia, Africa, and Oceania.
Trust in Shanghai Zhibang Valve's expertise and proven track record. Our ISO9001-certified manufacturing processes guarantee consistent quality and performance in every marine suction strainer we produce. Supported by our established presence in over a dozen international markets, we are a reliable partner for shipyards, ship owners, and marine equipment suppliers. We invite you to contact us for detailed quotations, technical drawings, and to discuss how our CB/T497-94 compliant strainers can be integrated into your specific marine application for reliable, long-term performance.
Frequently Asked Questions (FAQ):
Q1: What is the main difference between Type A/AS and Type BR/BRS marine suction strainers?
A: The primary differences often relate to body configuration, connection orientation, and sometimes size range. Types A and AS are generally designed with specific flange arrangements and may have a different aspect ratio compared to BR/BRS types. It is crucial to consult the CB/T497-94 standard drawings or provide your pipeline layout for our engineers to recommend the most suitable model.
Q2: Can you provide strainers with flanges matching ANSI or DIN standards instead of GB standards?
A: Yes, absolutely. While manufactured per the Chinese CB standard, we regularly produce strainers with flanges drilled and faced to meet ANSI, DIN, JIS, or other international standards upon request. Please specify your required flange standard and pressure class when inquiring.
Q3: What are the typical screen mesh sizes available, and can they be customized?
A: Standard perforation sizes often include 3mm, 5mm, and 8mm diameter holes. However, the screen mesh or perforation pattern is highly customizable based on the size of debris you need to filter. We can manufacture screens with different hole sizes, shapes, and open areas to meet your specific filtration requirements.
Q4: Are these strainers suitable for freshwater applications or other fluids besides seawater?
A: While designed for marine seawater service, the construction materials (e.g., cast steel, stainless steel) make them suitable for a variety of other fluids, including freshwater, oils, and certain chemicals. The suitability depends on the fluid's chemical compatibility with the selected body and screen materials. Please consult with us for non-seawater applications.
Q5: How do I determine the correct size (nominal diameter) of strainer needed for my system?
A: Sizing depends on the required flow rate (m³/h or GPM) and the allowable pressure drop across the strainer. Providing your system's flow parameters and pipeline size will allow our technical team to calculate and recommend the appropriate strainer nominal diameter (DN) from our range.
Q6: What maintenance is required for these strainers?
A: Maintenance primarily involves periodic inspection and cleaning of the screen basket. The frequency depends on water quality and debris load. The design allows the cover to be unbolted for easy access to the basket. We recommend establishing a regular inspection schedule as part of your vessel's planned maintenance system.
Q7: Do you provide installation drawings and manuals?
A: Yes, we provide detailed general arrangement drawings, dimensional data sheets, and installation/maintenance manuals with each order. These documents are essential for proper installation and integration into your piping system.
Q8: What is your lead time for production and delivery?
A: Lead times vary based on model, material, quantity, and customization. For standard models in common materials, we typically maintain stock or can produce within a few weeks. We provide accurate lead time estimates with every quotation. Our multiple export ports enable flexible and efficient shipping logistics.
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