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Marine Cryogenic Ball Valve CB/T3191 for Offshore Platform LNG Piping and Storage
Product Spotlights
CB/T3191-standard marine cryogenic ball valve designed for reliable LNG service on offshore platforms. Features robust stainless/carbon steel construction, PTFE seals for bubble-tight shut-off down to -196°C, and optional pneumatic/electric actuation. Ensures safety, durability, and low maintenance in harsh marine environments. Available in sizes DN15-DN300 and pressure classes up to Class 1500.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, LNG Piping
Product Standard:
CB/T3191
Material:
Stainless Steel (304/316/L) or Carbon Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, LNG Piping
Product Standard
CB/T3191
Material
Stainless Steel (304/316/L) or Carbon Steel
Temperature Rating
-196°C to +80°C
Pressure Rating
Class 150 to Class 1500
Connection Type
Flanged, Welded, or Threaded
Operation Mode
Manual, Pneumatic, or Electric Actuation
Seat Material
PTFE or Reinforced PTFE
Valve Size
DN15 to DN300 (1/2“ to 12“)
As a specialized manufacturer with years of experience in industrial fluid control, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine Cryogenic Ball Valve, engineered to the stringent CB/T3191 standard. This valve is meticulously designed to meet the rigorous demands of LNG (Liquefied Natural Gas) handling on offshore platforms, where safety, reliability, and performance under extreme conditions are non-negotiable. Our valve ensures a secure and efficient shut-off solution for your critical cryogenic piping and storage systems, helping to protect your assets and personnel in challenging marine environments.
Core Product Features & Technical Advantages:
- Exceptional Cryogenic Performance: Specifically designed for temperatures as low as -196°C, the valve's materials and construction prevent embrittlement and ensure smooth operation, maintaining a perfect seal even in the most frigid LNG applications.
- Robust Construction & Material Integrity: The valve body and critical components are crafted from high-grade stainless steel (304, 316, 316L) or specially treated carbon steel, offering superior resistance to corrosion, pressure, and thermal stress cycling common in offshore settings.
- Advanced Sealing Technology: Utilizes PTFE or reinforced PTFE seats and stem seals, providing a bubble-tight shut-off with minimal torque. This design minimizes fugitive emissions and ensures long-term sealing reliability, a critical factor for environmental and safety compliance.
- Versatile Actuation Options: Available in manual lever, gearbox, pneumatic, and electric actuated versions. This flexibility allows for integration into automated control systems on platforms, enabling remote operation and enhancing operational safety by reducing personnel exposure to hazardous areas.
- Low Maintenance & High Durability: The trunnion-mounted or floating ball design, combined with self-lubricating components suitable for cryogenic service, results in a valve that requires minimal maintenance despite continuous exposure to harsh marine and cryogenic conditions, lowering your total cost of ownership.
- Comprehensive Sizing and Pressure Range: We offer a wide range of sizes from DN15 (1/2") to DN300 (12") and pressure classes from Class 150 to Class 1500, ensuring a perfect fit for various pipeline dimensions and pressure requirements within your LNG system.
Detailed Technical Specifications:
| Parameter | Specification / Option |
| Design & Manufacturing Standard | CB/T3191 (China Ship Standard) |
| Body Material | Stainless Steel 304/316/316L, LCC Steel, LCB Steel |
| Ball & Stem Material | Stainless Steel with Low-Temperature Treatment |
| Seat & Seal Material | PTFE, Reinforced PTFE (RPTFE), PCTFE (optional) |
| Temperature Range | -196°C (-320°F) to +80°C (+176°F) |
| Pressure Rating (PN/Class) | PN16 to PN250 / Class 150 to Class 1500 |
| Connection Types | RF Flange, RTJ Flange, Butt Weld, Socket Weld, Threaded (NPT/BSP) |
| Operation | Manual Lever, Gear Operator, Pneumatic Actuator, Electric Actuator |
| Fire Safe Design | Available upon request (to API 607/API 6FA standards) |
| Anti-Static Device | Standard |
| Blow-Proof Stem | Standard |
Benefits for Your Offshore LNG Operations:
- Enhanced Safety: The valve's reliable sealing and robust construction minimize the risk of leaks in critical LNG transfer and storage lines, directly contributing to a safer working environment on the offshore platform.
- Operational Efficiency: Quick quarter-turn operation and availability of automated actuators allow for fast response in process control, reducing downtime and improving the overall efficiency of LNG handling.
- Long Service Life & Cost Savings: Built with durability in mind, our valves withstand the corrosive marine atmosphere and extreme thermal cycling, leading to fewer replacements and lower long-term maintenance costs.
- Regulatory Compliance: Manufactured according to the recognized CB/T3191 standard, this valve helps your systems meet relevant industry specifications for marine and cryogenic service.
- System Flexibility: The wide range of sizes, pressure ratings, and connection options ensures seamless integration into both new projects and retrofit applications on your platform.
Trust in a manufacturer with a proven track record. Established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. operates under an ISO9001-certified quality management system, ensuring consistent product quality from raw material sourcing to final inspection. Our annual export value of US$1 Million to US$1.5 Million demonstrates our capability and reliability in serving a global clientele across North America, South America, Europe, Asia, Africa, and Oceania. We ship efficiently from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery to your project site. For a valve solution that combines technical excellence with proven manufacturing rigor for your offshore platform's most demanding LNG applications, contact us today for a detailed quotation or technical consultation.
Frequently Asked Questions (FAQ):
-
Q: What is the primary advantage of using a ball valve designed to CB/T3191 for LNG service?
A: The CB/T3191 standard is a Chinese shipbuilding standard that specifies requirements for valves used in marine environments, including cryogenic applications. Valves built to this standard are rigorously tested for performance under conditions simulating offshore use, ensuring they meet the specific safety and durability demands of LNG handling on ships and platforms. -
Q: Can this cryogenic ball valve be used with media other than LNG?
A: Yes, while optimized for LNG, this valve is suitable for other cryogenic fluids such as liquid nitrogen (LIN), liquid oxygen (LOX), liquid argon (LAR), ethylene, and other liquefied gases within its specified temperature and pressure ratings. -
Q: What material choices are recommended for seawater-cooled or highly corrosive offshore environments?
A: For maximum corrosion resistance in splash zones or areas with high salinity, we recommend specifying the valve body and components in Stainless Steel 316 or 316L. Special coatings or treatments can also be discussed as optional features. -
Q: Is fire-safe certification available for this valve?
A: Yes, a fire-safe design is an available option. Valves can be manufactured and tested to meet the requirements of standards like API 607 or API 6FA, providing an additional layer of safety in the event of a fire on the platform. -
Q: How does the extended bonnet design benefit cryogenic service?
A: Many cryogenic ball valves feature an extended bonnet (or stem). This design creates a "cold box" effect, distancing the stem packing and operating mechanism from the extremely cold fluid. This prevents packing freeze-up, ensures smoother operation, and protects the actuator from thermal stress. -
Q: What is the typical delivery lead time for an order?
A: Lead times vary based on order quantity, valve size, material specifications, and actuation requirements. Standard configurations typically have shorter lead times. Please contact our sales team with your specific requirements for an accurate delivery schedule. -
Q: Do you provide technical support for valve selection and installation?
A: Absolutely. Our engineering team provides comprehensive technical support, including assistance with valve sizing, material selection for your specific service conditions, actuation package recommendations, and guidance on installation best practices. -
Q: Are your valves suitable for both above-deck and below-deck installations on an offshore platform?
A: Yes, the robust construction and material options make these valves suitable for various locations on a platform. The specific material grade and any optional protective features (like coatings) should be selected based on the specific environmental conditions (e.g., temperature, humidity, salt spray exposure) of the installation site.
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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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