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Help CenterCast Steel Marine Ball Valve CB/T3191 Standard Compliant
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As a leading manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our premium Cast Steel Marine Ball Valve. Engineered to meet the rigorous demands of maritime and industrial fluid control, this valve is manufactured in strict compliance with the CB/T3191 standard, ensuring reliability and safety in critical applications. With over eight years of expertise since our establishment in 2016 and a significant annual export footprint across continents, we understand the precise requirements for valves in shipbuilding, offshore platforms, and marine piping systems. Our commitment is to deliver robust, high-performance valves that guarantee long service life and minimal maintenance, directly contributing to the operational efficiency and safety of your projects.
This marine-grade ball valve is designed for superior performance in demanding environments. Its construction and features are tailored to handle seawater, fuels, lubricants, and other media commonly found in marine applications.
- Robust Cast Steel Construction: The valve body and key components are crafted from high-grade cast steel (such as WCB for carbon steel or CF8 for stainless steel variants), offering excellent mechanical strength and resistance to corrosion, particularly when paired with suitable surface treatments or coatings for marine atmospheres.
- CB/T3191 & Industry Standard Compliance: Adherence to the Chinese CB/T3191 standard for marine valves is a core feature, ensuring dimensional interchangeability, pressure ratings, and testing protocols specific to marine use. Our valves also conform to other recognized standards like GB/T12237 and API 6D, providing global applicability.
- Versatile Design and Configuration: Available in a comprehensive range of sizes, pressure classes, and end connections to fit diverse piping layouts.
| Parameter | Specification / Option |
|---|---|
| Size Range (Nominal Diameter) | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500 |
| Pressure Rating | PN16, PN25, PN40; ANSI Class 150, Class 300 |
| Body Material | Cast Carbon Steel (WCB), Stainless Steel (CF8/304, CF8M/316), Duplex Steel |
| Ball & Stem Material | Stainless Steel, Chrome Plated Carbon Steel |
| Seat Material | PTFE (Standard), Reinforced PTFE (RPTFE), Metal (for high-temp) |
| End Connection | Flanged (RF, FF), Threaded (NPT, BSP), Butt-Weld |
| Operation | Lever Handle, Gear Operator, Pneumatic Actuator, Electric Actuator |
| Fire Safe Design | Available upon request (to API 607/API 6FA standards) |
The valve incorporates a blow-out proof stem design for enhanced safety, preventing the stem from being ejected under pressure. The low operating torque, facilitated by precision-machined balls and low-friction seats, allows for easy manual operation or enables the use of smaller, more cost-effective actuators. For critical services, anti-static devices and fire-safe features are available to mitigate risks. The full port design minimizes pressure drop, optimizing flow efficiency in your systems. These technical advantages translate into tangible benefits for clients: reduced downtime due to reliable performance, lower lifecycle costs through durability, and enhanced system safety compliant with marine regulations.
Choosing Shanghai Zhibang means partnering with a proven supplier. Our ISO9001 certification underpins every stage of production, from material sourcing to final testing. With an annual export value ranging from US$1 Million to US$1.5 Million, our products have gained trust in major markets including North America, Eastern Europe, Southeast Asia, the Middle East, and Oceania. We offer flexible logistics with multiple shipment ports like Shanghai, Guangzhou, and Hong Kong. This global reach and consistent quality assurance provide a strong foundation of reliability. Our Cast Steel Marine Ball Valve is not just a component; it's a commitment to the integrity of your marine and industrial systems. We invite you to contact us for detailed quotations, technical data sheets, or to discuss custom requirements for your specific application.
Frequently Asked Questions (FAQ):
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Q: What is the significance of the CB/T3191 standard for this valve?
A: CB/T3191 is a Chinese national standard specifically for marine valves. Compliance ensures the valve meets defined requirements for design, materials, manufacturing, inspection, and testing suitable for shipboard and offshore use, offering assurance of quality and suitability for maritime applications. -
Q: Can this valve be used with seawater?
A: Yes, it is designed for marine environments. For seawater service, we recommend specifying stainless steel (e.g., CF8M/316) or duplex steel body materials and appropriate seat materials (like RPTFE or special elastomers) for optimal corrosion resistance and longevity. -
Q: What types of actuators can be fitted?
A: The valve is compatible with a wide range of actuators. We can supply it as a manual valve (lever or gear) or pre-fitted with pneumatic (double-acting or spring-return) or electric actuators. The mounting interface is standardized (ISO 5211), allowing for flexibility. -
Q: Is this valve fire-safe certified?
A: A fire-safe design is an available option. Valves can be manufactured and tested to meet fire safety standards such as API 607 or API 6FA upon request, which is crucial for applications handling flammable fluids. -
Q: What is the delivery lead time for standard sizes?
A: For standard specifications and sizes from our inventory, lead time is typically short. For large orders or special configurations, we provide a precise timeline upon order confirmation. Our multiple ports facilitate efficient shipping. -
Q: Do you provide documentation and certification with the valves?
A: Yes. Each shipment is accompanied by necessary documentation, which may include a material test report, certificate of compliance, and operational manual. The ISO9001 certificate of our factory is available for review. -
Q: How do I select the correct pressure rating (PN vs. Class)?
A: The selection depends on your system's design pressure and the applicable standard. PN ratings (e.g., PN16) are common in metric systems, while Class ratings (e.g., Class 150) are used in American systems. Our technical team can assist you in matching the valve to your specific pressure and temperature conditions. -
Q: Are custom markings or packaging requirements accommodated?
A> Yes, we offer customization for markings (like stamping) per client specifications. Packaging can also be tailored, such as wooden cases for ocean freight, to ensure products arrive in perfect condition.
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