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CB/T3191 Low Temperature Ball Valve for Shipboard LNG Fuel Lines and Transfer Systems
Product Spotlights
CB/T3191 compliant low-temperature ball valve designed for shipboard LNG systems. Features cryogenic-grade materials (-196°C rating), robust sealing for safety, and flexible sizing/actuation options. Manufactured with ISO9001 quality control, supporting global maritime projects with reliable performance and customization.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T3191
Application:
Other, Shipboard LNG fuel lines and transfer systems
Material:
Cryogenic-grade stainless steel and carbon steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
CB/T3191
Application
Other, Shipboard LNG fuel lines and transfer systems
Material
Cryogenic-grade stainless steel and carbon steel
Connection Type
Flanged or threaded
Size Range
DN15 to DN300 (or customizable)
Temperature Rating
-196°C to +80°C
Pressure Rating
PN16 to PN40 (or customizable)
Sealing Design
Double-seal or extended bonnet
Operation Mode
Manual, gear-operated, or actuated
As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-performance valves for demanding industrial applications. Our CB/T3191 Low Temperature Ball Valve is engineered specifically for the critical task of handling Liquefied Natural Gas (LNG) in maritime environments. Designed to meet the stringent requirements of shipboard fuel lines and transfer systems, this valve ensures reliable, safe, and efficient operation under extreme cryogenic conditions, safeguarding your vessel's propulsion and fuel management infrastructure.
This valve is a cornerstone component for modern LNG-powered ships, where safety and durability are paramount. We combine rigorous manufacturing standards with advanced material science to deliver a product that withstands the challenges of marine operation. Our focus on precision engineering means every valve is built to perform consistently, reducing maintenance needs and enhancing overall system integrity.
Key Features & Technical Specifications:
- Cryogenic Performance: Specifically designed for temperatures as low as -196°C, ensuring no leakage or performance degradation when handling LNG.
- Robust Construction: Utilizes specially selected materials such as cryogenic-grade stainless steel for the ball and stem, and carbon steel or stainless steel for the body, to prevent thermal contraction issues and material failure.
- Advanced Sealing System: Features a low-temperature sealing design, often incorporating a double-seal structure or extended bonnet to isolate the stem seals from the cold fluid, maintaining sealing integrity.
- Safe & Efficient Operation: Provides quick 90-degree on/off operation with low torque, suitable for manual, gear-operated, or automated actuation systems for remote control.
- Compliance & Standards: Manufactured in compliance with the Chinese CB/T3191 standard for ship valves, ensuring compatibility with maritime industry specifications.
Detailed Technical Parameters:
| Parameter | Typical Specification / Range |
| Standard | CB/T3191 |
| Primary Application | Shipboard LNG Fuel Lines & Transfer Systems |
| Body Material | Carbon Steel (WCB), Stainless Steel (CF8/CF8M) - customizable |
| Ball & Stem Material | Cryogenic Stainless Steel |
| Seal Material | PTFE, Reinforced PTFE, or Special Cryogenic Polymers |
| Size Range (Nominal Diameter) | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 (customizable) |
| Connection Type | Flanged (RF, FF), Threaded (NPT, BSPT/BSPP) - customizable |
| Temperature Range | -196°C to +80°C (Operating) |
| Pressure Rating (PN) | PN16, PN25, PN40 (or customizable per design) |
| Fire Safe Design | Optional / Available upon request |
| Actuation Option | Manual Lever, Gear Box, Electric Actuator, Pneumatic Actuator |
Benefits for Your Project:
- Enhanced System Safety: The valve's reliable sealing under cryogenic conditions prevents LNG leakage, a critical safety factor on ships.
- Long Service Life & Reduced Maintenance: Durable materials and design minimize wear from thermal cycling and operation, leading to lower lifecycle costs.
- Operational Flexibility: Available in various sizes and actuation methods, it can be integrated into new builds or retrofit projects.
- Streamlined Procurement: Being a manufacturer, we offer direct supply, competitive pricing, and support for customization to meet specific ship design requirements.
- Global Supply Chain Support: With annual export experience and multiple shipment ports (Shanghai, Guangzhou, Hongkong, Beijing), we ensure timely delivery to your location worldwide.
Shanghai Zhibang Valve, established in 2016, has built a reputation for quality and reliability, exporting to diverse markets including North America, South America, Europe, Asia, Africa, and Oceania. Our ISO9001-certified manufacturing process guarantees consistent quality control from raw material inspection to final testing. Each CB/T3191 Low Temperature Ball Valve undergoes stringent performance tests, including cryogenic cycle tests and pressure tests, to validate its readiness for maritime service. This commitment to quality, backed by our growing annual export value, means you receive a valve that is not just a component, but a dependable solution for your vessel's LNG system. We invite shipbuilders, marine engineers, and system integrators to contact us for detailed specifications, pricing, and to discuss how our valves can meet the precise needs of your project.
Frequently Asked Questions (FAQ):
-
Q: What does the "CB/T3191" standard signify for this valve?
A: CB/T3191 is a Chinese national standard specifically for valves used on ships. It defines requirements for materials, design, pressure ratings, testing, and marking to ensure suitability and safety for marine applications. Our valve is manufactured to comply with this standard. -
Q: Can this valve be used for other cryogenic fluids besides LNG?
A: Yes. While optimized for LNG, its design and materials are suitable for handling other cryogenic liquids such as liquid nitrogen (LIN), liquid oxygen (LOX), or liquid ethylene, provided the temperature and pressure ranges are within its specified ratings. -
Q: Is a fire-safe version available?
A: Fire-safe design is an important consideration for marine applications. We can provide valves with fire-safe features upon request, which typically include secondary metal sealing in case the primary soft seal is compromised by fire. -
Q: What are the typical actuation methods offered?
A: We offer several options: standard manual lever for direct operation, a gear operator for larger sizes requiring torque reduction, and electric or pneumatic actuators for integration into automated control systems. The choice depends on your system design. -
Q: How do you ensure the valve performs at -196°C?
A: We use materials specifically tested and selected for cryogenic service to avoid issues like brittle fracture or excessive thermal contraction. Critical components like the ball and stem are made from special austenitic stainless steels. The sealing design often includes an extended bonnet to keep the stem seals at a warmer temperature. -
Q: What is your production capacity and lead time?
A: As a manufacturer, we have flexible production capacity. Lead times vary based on order quantity, specification complexity, and customization. Standard sizes and configurations typically have shorter lead times. Please contact us with your requirements for a specific timeline. -
Q: Do you provide documentation and certifications?
A> We provide standard documentation including material certificates, test reports (like pressure test), and a certificate of compliance. Our manufacturing facility is ISO9001 certified, ensuring a documented quality management system. -
Q: Can you customize the valve for a specific flange standard or connection?
A> Absolutely. Customization is a key service. We can manufacture valves to match various international flange standards (ANSI, DIN, JIS, etc.) or specific threaded connections as required by your piping system design.
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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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