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Help CenterCB/T3191 Standard Marine Flanged Ball Valve in Cast Steel, Full Bore DN50-DN200, PN16
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As a professional manufacturer with a strong commitment to marine fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T3191 Standard Marine Flanged Ball Valve. Engineered specifically for demanding maritime environments, this cast steel, full bore valve combines robust construction with reliable performance, ensuring safe and efficient operation in critical shipboard piping systems. Our years of experience since 2016 in serving global markets allow us to understand the precise requirements for marine-grade valves, and this product is a direct result of that expertise.
This valve is designed to meet the rigorous CB/T3191 standard, a benchmark for marine valve quality and safety. Its full bore design minimizes pressure drop, facilitating optimal flow rates for fuel, water, ballast, and other essential shipboard fluids. The flanged connection ensures a secure, leak-proof seal that is easy to install and maintain, a crucial factor in marine applications where reliability is non-negotiable.
Key Features & Technical Advantages:
- Marine-Specific Design: Compliant with the CB/T3191 standard, ensuring suitability for shipbuilding and offshore platform applications.
- Robust Cast Steel Body: Provides excellent strength and corrosion resistance, capable of withstanding harsh seawater and atmospheric conditions.
- Full Bore Configuration: Offers minimal flow resistance, which is ideal for applications requiring high flow capacity and efficient system performance.
- Reliable Sealing: Features a PTFE (Polytetrafluoroethylene) seat as standard, known for its excellent chemical resistance, low friction, and tight sealing over a wide temperature range.
- Easy Operation & Maintenance: The standard lever actuator allows for quick 90-degree operation to open or close the valve. The flanged ends simplify installation and future servicing.
- Wide Size Availability: Available in a comprehensive range from DN50 to DN200, catering to various pipeline diameters on vessels and marine structures.
Technical Specifications:
| Parameter | Specification |
| Product Standard | CB/T3191 |
| Body Material | Cast Steel (e.g., WCB, LCB) |
| Size Range (Nominal Diameter) | DN50, DN65, DN80, DN100, DN125, DN150, DN200 |
| Pressure Rating | PN16 (16 bar) |
| Connection Type | Flanged (RF face as standard) |
| Bore Type | Full Port (Full Bore) |
| Seat & Seal Material | PTFE (Standard), other materials available upon request |
| Operation | Lever Handle |
| Temperature Range | -20°C to +200°C (with PTFE seat, subject to media) |
Benefits for Your Marine Projects:
- Enhanced System Safety: Compliance with marine standards ensures the valve meets specific safety and performance criteria for maritime use.
- Reduced Maintenance Costs: The durable cast steel construction and reliable sealing materials extend service life and reduce downtime.
- Improved Operational Efficiency: The full bore design supports efficient fluid transfer, contributing to overall system energy savings.
- Global Supply Compatibility: Flanged connections are widely used internationally, making the valve easy to integrate into existing or new marine piping systems.
Frequently Asked Questions (FAQ):
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What does "CB/T3191" standard mean for this valve?
CB/T3191 is a Chinese national professional standard specifically for marine valves. It defines the technical requirements, testing methods, inspection rules, and markings for valves used in shipbuilding and marine engineering, ensuring they are suitable for the harsh marine environment. -
Is this valve suitable for seawater applications?
Yes. The cast steel body offers good corrosion resistance. For prolonged direct seawater service, specific material grades or protective coatings can be discussed to enhance longevity. -
What is the advantage of a Full Bore (Full Port) design?
A full bore valve has an internal diameter equal to the pipeline's inner diameter. This minimizes flow restriction and pressure drop, prevents media clogging, and allows for easier pipeline cleaning (pigging), which is valuable in marine systems. -
Can you provide valves with different flange standards (e.g., ANSI, JIS)?
Yes. While supplied with standard RF flanges per CB/T3191, we can customize the flange dimensions and ratings (like ANSI 150#) to meet specific project requirements upon request. -
What fluids is this valve designed to handle?
It is designed for general marine service fluids including water, oil, fuel, air, and other non-aggressive media within its pressure and temperature ratings. Compatibility with specific aggressive chemicals should be verified. -
Do you offer actuated versions of this valve?
Yes. Pneumatic or electric actuators can be fitted to this flanged ball valve for remote or automated control, which is common in modern marine systems. -
What is your typical lead time for an order of DN100 valves?
Lead times vary based on order quantity and current production schedule. For standard DN100 valves, we generally aim for a competitive lead time. Please contact us with your specific quantity for an accurate delivery estimate. -
What certifications do your manufacturing processes hold?
Our manufacturing quality management system is certified to ISO9001, which underscores our commitment to consistent product quality, reliable processes, and customer satisfaction.
Backed by our ISO9001-certified quality management system and nearly a decade of manufacturing expertise since 2016, Shanghai Zhibang Valve stands as a reliable partner for your marine valve needs. Our annual export value of US$1-1.5 Million and presence in major markets across North America, South America, Europe, Asia, Africa, and Oceania testify to the global acceptance and trust in our products. We ship efficiently from key ports like Shanghai, Guangzhou, Hong Kong, and Beijing. Choose our CB/T3191 Marine Flanged Ball Valve for a robust, standards-compliant solution that delivers performance and peace of mind in your marine applications. Contact us today to discuss your requirements or request a quotation.
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