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Help CenterCB/T3191 Cast Steel Marine Ball Valve DN15-DN80 PN2.5-10MPa
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As a professional manufacturer with a solid foundation since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd specializes in producing high-performance valves for demanding industrial and marine applications. Our CB/T3191 Cast Steel Marine Ball Valve series, ranging from DN15 to DN80 with pressure ratings of PN2.5 to 10MPa, represents our commitment to reliability and durability in critical fluid control systems. Engineered to meet the stringent requirements of marine environments, these valves are designed to deliver exceptional sealing performance, robust construction, and long service life, ensuring safe and efficient operation for your vessels and offshore installations.
This valve series is a cornerstone for shipbuilders, marine engineers, and offshore operators who require dependable flow control solutions. We combine precise manufacturing under our ISO9001-certified quality management system with extensive export experience, serving markets worldwide from North America to Southeast Asia, Africa, and Europe. Our valves are shipped from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, facilitating smooth global logistics.
Key Features & Technical Specifications:
- Robust Construction: The valve body and key components are made from high-grade cast steel, providing superior strength and resistance to corrosion, essential for the harsh saline and variable pressure conditions encountered in marine applications.
- Precision Sealing: Utilizing advanced seat materials such as PTFE or optional metal seats, the valve ensures leak-free performance even under high pressure (up to 10MPa) and repeated cycling.
- Versatile Size & Pressure Range: Available in a comprehensive size spectrum from DN15 (small pipelines) to DN80 (main lines), with pressure classes covering PN2.5, PN6, PN10MPa, offering flexibility for different system designs.
- Efficient Operation: Designed for smooth 90-degree rotation, providing quick open/close functionality. Options for manual handwheel operation or automated pneumatic actuators are available to suit various control schemes.
- Full Port Design Option: Certain models offer a full port design, minimizing flow resistance and pressure drop, which is crucial for maintaining system efficiency in fuel, water, or ballast lines.
- Broad Temperature Tolerance: Standard models operate reliably within a temperature range of -20°C to 200°C, accommodating most marine fluid services.
Detailed Parameters Table:
| Parameter | Specification / Range |
| Standard | CB/T3191 |
| Nominal Diameter (DN) | 15, 20, 25, 32, 40, 50, 65, 80 |
| Pressure Rating (PN) | 2.5 MPa, 6 MPa, 10 MPa |
| Body Material | Cast Steel (WCB, etc.) |
| Seat Material (Standard) | PTFE |
| Seat Material (Optional) | Metal (Stainless Steel, etc.) |
| Connection Type | Flanged (Standard), Threaded (Optional) |
| Operation Mode | Manual, Pneumatic Actuator (Optional) |
| Port Type | Standard Port, Full Port (Optional) |
| Temperature Range | -20°C ~ 200°C (Standard) |
Advantages & Customer Benefits:
- Enhanced System Safety: The high-pressure capability and reliable sealing prevent leaks, protecting marine equipment and personnel.
- Reduced Maintenance Costs: Durable cast steel construction and quality internal components extend service intervals, lowering long-term operational expenses.
- Design Flexibility: The wide range of sizes, pressure ratings, and optional features (actuators, seat materials) allows engineers to select the perfect valve for specific pipeline layouts and fluid types.
- Global Compliance & Supply: Manufactured under ISO9001, our valves are trusted by clients across diverse international markets. Our multiple shipment ports ensure timely delivery.
- Optimized Flow Performance: The optional full-port design reduces turbulence and pressure loss, contributing to energy efficiency in pumping systems.
Our CB/T3191 Cast Steel Marine Ball Valve is backed by the manufacturing expertise of Shanghai Zhibang Valve, a company that has built a reputation for quality since its establishment in 2016. With an annual export value ranging between US$1 Million and US$1.5 Million, we have successfully supplied our products to a vast network covering North America, South America, Eastern and Western Europe, Southeast Asia, Africa, Oceania, and the Middle East. This global footprint is a testament to the reliability and performance of our valves. Choosing our valve means partnering with a proven manufacturer capable of delivering robust, specification-compliant products that enhance the safety and efficiency of your marine operations. We encourage you to contact us for detailed quotations, technical drawings, or to discuss custom requirements for your next project.
Frequently Asked Questions (FAQ):
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Q: What does the "CB/T3191" standard signify for this valve?
A: CB/T3191 is a Chinese national standard specifically for marine valves. It defines the material, design, pressure testing, and performance requirements for valves used on ships and marine structures, ensuring they meet the safety and durability needs of maritime applications. -
Q: Can this valve be used for fluids other than water, such as fuel oil or chemicals?
A: Yes. The cast steel body and optional seat materials (like PTFE or metal) make it suitable for a variety of fluids including seawater, fuel oil, lubricants, and certain chemicals. Please consult with us regarding the specific fluid properties to confirm compatibility. -
Q: Is the valve suitable for both above-deck and below-deck installations?
A: Absolutely. Its robust cast steel construction and corrosion resistance make it appropriate for various locations onboard, including engine rooms, ballast systems, and deck piping, provided the environmental conditions fall within its specified temperature range. -
Q: What are the available actuation options?
A: The standard configuration is a manual handwheel. However, we can equip the valve with a pneumatic actuator for remote or automated control, which is a common requirement in modern marine control systems. -
Q: How does the pressure rating (PN) relate to actual working pressure?
A: The PN rating (e.g., PN10MPa) indicates the nominal pressure the valve is designed to withstand. It is a key parameter for system design. The actual maximum working pressure should be selected based on your system's requirements, ensuring it does not exceed the valve's PN rating. -
Q: Are spare parts like seals or gaskets readily available?
A: Yes. As a manufacturer, we maintain stock of common spare parts and can supply them upon request. Using original spare parts ensures optimal performance and longevity. -
Q: What is the typical delivery lead time for these valves?
A: Lead times vary based on order quantity, specific model, and optional features. Standard models in common sizes often have shorter lead times. We ship from ports like Shanghai, Guangzhou, Hong Kong, and Beijing, facilitating efficient logistics to your destination. -
Q: Does the company provide technical support or installation guidance?
A: Yes. We offer technical documentation, including installation manuals and dimensional drawings. Our team can provide guidance on proper installation and operation to ensure optimal performance.
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