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Help CenterStainless Steel Low Temperature Ball Valve per CB/T3191, Extended Bonnet for Cold Insulation
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As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve is proud to introduce our precision-engineered Stainless Steel Low Temperature Ball Valve designed per CB/T3191 standard. With our extensive experience since 2016 and products successfully exported to global markets including North America, Europe, and Southeast Asia, we understand the critical demands of cryogenic applications. Our valve is specifically built to ensure reliable, leak-free operation in extreme cold environments, safeguarding your processes in industries like LNG handling and industrial gas production.
This valve is engineered with a focus on safety, durability, and performance under low-temperature conditions. Its core design addresses the unique challenges posed by cryogenic media.
- Extended Bonnet Design: The extended bonnet is a critical feature that isolates the valve stem and packing from the extreme cold of the process fluid. This design prevents packing freeze-up, reduces heat transfer to the operating mechanism, and ensures smooth operation even at temperatures as low as -196°C.
- Robust Stainless Steel Construction: Manufactured from high-grade stainless steel (such as 304 or 316), the valve body offers excellent corrosion resistance and high strength to withstand both thermal stress and system pressure.
- CB/T3191 Compliance: Adherence to the Chinese CB/T3191 standard for low-temperature valves guarantees a specific level of design, material selection, and testing suitable for cryogenic service, providing a recognized benchmark for quality.
- Advanced Seat Technology: Equipped with seats made from specialized polymers like PTFE or PPL, which maintain their sealing integrity and flexibility across a wide temperature range, ensuring a bubble-tight shut-off.
- Versatile Actuation Options: Available with manual lever, gear operator, or automated actuators (pneumatic/electric), allowing for seamless integration into both manual and automated control systems.
- Comprehensive Cold Insulation: The extended bonnet design facilitates effective application of cold insulation materials around the valve body, minimizing heat ingress and preventing ice formation on external surfaces.
The technical specifications below outline key parameters for our standard models. Customization is available upon request to meet specific project requirements.
| Parameter | Specification / Option |
|---|---|
| Body Material | Stainless Steel 304, 316, 316L |
| Design Standard | CB/T3191 |
| Pressure Rating (PN) | PN16, PN25, PN40, PN63 (or Class 150, 300) |
| Temperature Range | -196°C to +80°C (operating) |
| Connection Types | Flanged (RF, RTJ), Threaded (NPT, BSP), Butt Weld |
| Seat & Seal Material | PTFE, Reinforced PTFE, PPL (PolyPhenylene Sulfide) |
| Ball Material | Stainless Steel, Chrome Plated |
| Stem Design | Blow-out Proof, Extended for Insulation |
| Operation | Manual Lever, Worm Gear, Pneumatic Actuator, Electric Actuator |
| Fire Safe Design | Optional per API 607/API 6FA |
Benefits for Your Operation:
- Enhanced Safety: The extended bonnet and robust design minimize the risk of leaks and operator exposure to extreme cold.
- Reduced Maintenance: Superior materials and design lead to longer service life and lower total cost of ownership.
- Process Reliability: Consistent performance ensures uninterrupted flow control in critical cryogenic processes.
- Global Compliance: Manufactured under ISO9001 standards, our valves meet the quality expectations of international markets across North America, Europe, Asia, and beyond.
Backed by our annual export value of US$1-1.5 Million and a presence in major ports like Shanghai and Guangzhou, Shanghai Zhibang Valve has proven its capability to deliver reliable industrial valves worldwide. Our commitment to the CB/T3191 standard and cryogenic engineering expertise ensures you receive a product built for harsh conditions. Choose our Stainless Steel Low Temperature Ball Valve for a combination of technical precision, durable construction, and manufacturer-backed reliability. Contact us today to discuss your project specifications or request a detailed quotation.
Frequently Asked Questions (FAQ)
Q1: What is the primary purpose of the extended bonnet on this ball valve?
A1: The extended bonnet serves as a thermal barrier. It distances the stem packing and operating mechanism from the ultra-cold process fluid, preventing packing freeze, ensuring smooth operation, and allowing for effective external insulation application.
Q2: Can this valve be used for Liquid Nitrogen (LN2) or LNG service?
A2> Yes, absolutely. This valve is specifically designed for cryogenic applications, including liquefied gases like Liquid Nitrogen (down to -196°C) and LNG. The materials and extended bonnet design are selected to perform reliably in these environments.
Q3: What does compliance with CB/T3191 mean for the valve's quality?
A3: CB/T3191 is a Chinese national standard for low-temperature valves. Compliance ensures the valve meets defined requirements for design, material selection (especially impact toughness at low temperatures), manufacturing, and testing, providing a verified level of suitability for cryogenic duty.
Q4: Are automated actuation options available for remote operation?
A4: Yes. While available with manual levers or gear operators, this valve can be fitted with pneumatic or electric actuators upon request, enabling integration into automated control systems and remote operation.
Q5: What are the common port connections offered?
A5: We offer various end connections to suit different piping systems, including flanged (RF, RTJ faces), threaded (NPT, BSP), and butt weld ends. The specific type can be selected based on your project's piping specifications.
Q6: Is a fire-safe version of this cryogenic ball valve available?
A6: Yes, a fire-safe design is available as an optional feature. This design typically incorporates secondary metal-sealing seats to provide a seal in the event of a fire, meeting standards like API 607 or API 6FA.
Q7: What is the typical delivery lead time for standard models?
A7: Lead times vary based on specification, quantity, and current order load. For standard configurations, we generally aim for a competitive lead time. Please contact our sales team with your specific requirements for an accurate delivery schedule.
Q8: Do you provide technical support or documentation with the valves?
A8: Yes, we provide comprehensive support including product datasheets, material certificates, installation manuals, and maintenance guidelines. Our technical team is also available to assist with selection and application questions.
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