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Help CenterCB/T3191 Manual Gear Marine Ball Valve Application in Marine Cargo Pump Isolation
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As a dedicated manufacturer of industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable solutions for demanding marine applications. Established in 2016, our focus on quality and engineering excellence ensures that our CB/T3191 Manual Gear Marine Ball Valve is designed specifically for the critical task of cargo pump isolation onboard vessels. This valve offers dependable flow control, enhanced safety, and long-term durability, making it an essential component for ship operators and builders seeking to optimize their fluid handling systems.
The core value of this valve lies in its manual gear-operated mechanism, which provides precise and secure shut-off for cargo pumps. This design is crucial for maintaining operational safety and preventing leaks or unintended flow during cargo transfer, loading, or unloading procedures. Engineered to meet the CB/T3191 standard, it complies with specific requirements for marine valve construction, ensuring compatibility and reliability within shipboard piping networks.
Key Features and Technical Specifications:
- Rugged Construction: The valve body is typically manufactured from high-grade cast steel or stainless steel, providing excellent resistance to corrosion, pressure, and mechanical stress encountered in marine environments.
- Manual Gear Lever Operation: A geared handwheel or lever mechanism allows for smooth, controlled opening and closing. This design requires minimal effort for operation while ensuring a tight seal, even under high line pressures.
- Versatile Sealing Options: Seals can be PTFE (Polytetrafluoroethylene) for general applications or metal seals for higher temperature or more abrasive media, offering flexibility based on the cargo type (e.g., oil, chemicals, dry bulk carrier systems).
- Standard-Compliant Design: Adherence to the CB/T3191 standard guarantees that dimensions, pressure ratings, and material specifications are suitable for marine use, facilitating easier integration into ship designs.
- Broad Application Scope: Primarily designed for isolating cargo pumps, it is also suitable for general on/off service in various marine fluid systems, including ballast, fuel, and cooling water lines.
Advantages and Client Benefits:
- Enhanced Operational Safety: Secure isolation of cargo pumps prevents accidental spillage or mixing, protecting both the crew and the vessel.
- Reduced Maintenance Costs: The robust design and quality materials minimize wear and failure, leading to lower lifecycle costs and fewer unscheduled repairs.
- Simplified Installation and Compatibility: Standard flanged or threaded connections (common sizes: DN50, DN80, DN100, DN150, DN200, DN250, DN300) and compliance with marine standards ensure it fits seamlessly into existing or new piping layouts.
- Reliable Performance in Tough Conditions: Capable of handling pressures up to PN16 and temperatures from -20°C to 150°C, it performs reliably in diverse climatic and operational scenarios.
- Operator-Friendly Design: The manual gear operation is intuitive and does not require external power sources, making it fail-safe and easy to use for crew members.
Below is a summary table of common specifications available:
| Parameter | Typical Range / Option |
|---|---|
| Nominal Diameter (DN) | 50, 80, 100, 150, 200, 250, 300 |
| Pressure Rating (PN) | 10, 16 |
| Connection Type | Flanged (FF, RF), Threaded (NPT, BSP) |
| Body Material | Cast Steel WCB, Stainless Steel 304/316 |
| Seal Material | PTFE, Enhanced PTFE, Metal (optional) |
| Operation Temperature | -20°C to 150°C |
| Standards | CB/T3191, Manufactured under ISO9001 |
Shanghai Zhibang Valve Manufacture Co., Ltd. brings substantial experience and a global footprint to support your procurement needs. With an annual export value ranging between US$1 Million and US$1.5 Million, we have successfully supplied our valves to markets across North America, South America, Europe, Asia, Africa, and Oceania. Our manufacturing processes are governed by an ISO9001 quality management system, ensuring consistent product quality and reliability. We offer flexible shipment from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, facilitating efficient logistics. Choosing our CB/T3191 Manual Gear Marine Ball Valve means selecting a product backed by proven manufacturing expertise, international market acceptance, and a commitment to serving the marine industry's specific demands for safety and durability. Contact us today to discuss your requirements and secure a reliable solution for your vessel's cargo pump isolation needs.
Frequently Asked Questions (FAQ)
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What is the primary purpose of this valve?
This valve is specifically designed for the isolation (on/off control) of cargo pumps on ships. It ensures that the pump can be securely separated from the pipeline during maintenance, change of cargo, or to prevent backflow. -
Why is a manual gear operation preferred for this application?
Manual gear operation provides a direct, mechanical control that is reliable and does not depend on electrical power or complex control systems. It is simple for crew to operate and offers a clear visual indication of the valve status (open/closed). -
Can this valve be used for other fluids besides cargo?
Yes. While optimized for cargo pump isolation, its robust construction and sealing options make it suitable for other marine services such as ballast water, fuel oil, or lubricating oil systems, where reliable shut-off is required. -
What does compliance with CB/T3191 standard mean?
CB/T3191 is a Chinese national standard pertaining to marine valves. Compliance ensures the valve meets specified requirements for dimensions, materials, pressure ratings, and testing methods suitable for marine installation, promoting interoperability and safety. -
Are customization options available for specific ship designs?
Yes. As a manufacturer, we can discuss customization regarding specific dimensions, connection types, material grades, or sealing materials to match unique piping layouts or operational requirements. Details can be provided upon request. -
What are the typical maintenance requirements for this valve?
Given its sturdy design, maintenance is minimal. Periodic checks for seal integrity and smooth operation of the gear mechanism are recommended. The valve is designed for long service intervals under normal operating conditions. -
How does the ISO9001 certification benefit the buyer?
Our ISO9001 certification signifies a structured quality management system throughout our manufacturing process. This translates into consistent product quality, traceable production steps, and a systematic approach to meeting customer specifications and industry standards. -
What is the delivery lead time and shipping process?
Lead times vary based on order quantity and specifications. We ship from multiple ports in China (Shanghai, Guangzhou, Hongkong, Beijing) to facilitate access to global markets. Specific logistics arrangements can be discussed during order placement.
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