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Help CenterCB/T3191 Full Bore Ball Valve Warranty Included for Marine Use
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As a leading manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve specializes in providing robust and reliable fluid control solutions for demanding industries. Our CB/T3191 Full Bore Ball Valve is engineered specifically for marine applications, where reliability and zero downtime are non-negotiable. This valve is designed to offer minimal flow resistance and maximum durability, ensuring the smooth operation of critical shipboard systems such as ballast, bilge, fuel, and cooling water lines. With a proven track record of exporting to global markets including North America, Europe, and Southeast Asia, we understand the stringent requirements of marine engineering and deliver products that meet and exceed expectations.
This marine-grade full bore ball valve is a cornerstone of efficient piping systems. Its full-port design ensures the bore diameter is equal to the pipeline's inner diameter, drastically reducing pressure drop and allowing for the passage of pigs or cleaners, which is crucial for maintenance. Constructed from high-grade materials, it withstands the corrosive marine environment. Key features and benefits include:
- Superior Flow Capacity: The full bore design minimizes turbulence and pressure loss, leading to higher efficiency and lower pumping costs over the system's lifetime.
- Exceptional Sealing Performance: Advanced seat materials like reinforced PTFE or metal provide bubble-tight sealing, essential for preventing leaks in sensitive marine applications.
- Robust Construction: The valve body is crafted from materials like ASTM A216 WCB carbon steel or CF8M stainless steel, offering excellent resistance to corrosion and mechanical stress.
- Easy Operation & Maintenance: A low-torque design coupled with a durable stem ensures smooth 90-degree operation. The compact design allows for easy installation in tight engine room spaces.
- Versatile Actuation: Available in manual lever, gear-operated, or automated (pneumatic/electric) versions to suit various control system requirements onboard.
To provide a clear overview, here are some typical technical specifications:
| Specification | Details |
| Design Standard | CB/T3191 (China Ship Standard) |
| Size Range | DN15 (1/2") to DN600 (24") |
| Pressure Rating | PN10 to PN40 / Class 150 to Class 300 |
| Body Material | Carbon Steel (WCB), Stainless Steel (304, 316, 316L), Duplex Steel |
| Ball & Stem Material | Stainless Steel, with optional chrome plating or coating |
| Seat Material | PTFE, RPTFE, PEEK, Metal (for high-temp applications) |
| End Connection | Flanged (RF, RTJ), Threaded (NPT, BSP), Butt Weld |
| Temperature Range | -20°C to +200°C (varies with seat material) |
| Fire Safe Design | Optional, compliant with API 607/API 6FA standards |
For shipowners and shipyards, the advantages are tangible. The valve's reliability translates directly into reduced maintenance intervals and lower lifecycle costs. Its compliance with the CB/T3191 standard guarantees it is fit for purpose in Chinese shipbuilding, a major global industry. Furthermore, the included warranty provides peace of mind, covering defects in materials and workmanship, which underscores our confidence in the product's quality and our commitment to customer satisfaction.
Our commitment to quality is backed by our ISO9001 certification and nearly a decade of manufacturing expertise since our establishment in 2016. We have successfully served a diverse global clientele across six continents, with an annual export value demonstrating our capacity and reliability. Our strategic location in Shanghai, with access to major ports like Shanghai, Guangzhou, and Hong Kong, ensures efficient and timely logistics. When you choose Shanghai Zhibang's CB/T3191 Full Bore Ball Valve, you are not just buying a component; you are investing in a partnership with a dedicated manufacturer focused on delivering durable, high-performance valves that keep your vessels operating smoothly. Contact us today to discuss your specific requirements or to request a detailed quotation.
Frequently Asked Questions (FAQ)
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Q: What does "Full Bore" mean, and why is it important for marine use?
A: Full Bore (or Full Port) means the internal diameter of the valve opening matches the inner diameter of the connecting pipe. This design is vital for marine systems as it minimizes flow restriction, reduces pressure drop, and allows for easy pigging or cleaning of pipelines, which is essential for maintenance on ships. -
Q: Is this valve suitable for seawater applications?
A: Yes, when ordered with appropriate materials. We highly recommend specifying body materials like 316/316L stainless steel or duplex steel and seat materials compatible with seawater to ensure superior corrosion resistance and long service life. -
Q: What is the significance of the CB/T3191 standard?
A: CB/T3191 is a Chinese national standard specifically for marine valves. Valves manufactured to this standard are designed and tested to meet the rigorous demands of shipboard environments, including vibration, shock, and corrosion resistance. -
Q: Can this valve be automated?
A: Absolutely. This ball valve is designed to be compatible with various actuators. We can supply the valve as a manual unit or pre-assemble it with pneumatic or electric actuators per your system's control requirements. -
Q: What does the warranty cover, and for how long?
A: Our standard warranty covers defects in materials and workmanship under normal use and service conditions. The specific warranty period is detailed in our sales terms and conditions. Please contact our sales team for precise warranty information related to your order. -
Q: Do you provide custom markings or certifications?
A: Yes, we offer customization options. Valve markings can be tailored to meet specific classification society requirements (like ABS, BV, DNV). Additional certifications or test reports are available upon request. -
Q: What are the available pressure classes?
A> We offer a range of pressure ratings to suit different system needs, commonly PN16, PN25, PN40, Class 150, and Class 300. Higher pressure classes may be available as a custom order. -
Q: How do I determine the right material for my application?
A> The selection depends on the fluid media, temperature, pressure, and environmental conditions. Our technical team can assist you in choosing the optimal material combination (body, ball, seat) to ensure reliability and cost-effectiveness for your specific application.
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