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Help CenterMarine Ball Valve CB/T3191 Standard Compliant With Mill Test Report
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As a specialized manufacturer of industrial valves since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance Marine Ball Valve, engineered to meet the rigorous CB/T3191 standard. Designed specifically for the demanding environments of maritime and offshore applications, this valve offers reliable shut-off and control for critical shipboard piping systems. Our commitment to quality, backed by our ISO9001 certification and an annual export value exceeding US$1 million, ensures that every valve delivers the durability and performance required by shipyards, naval architects, and marine engineers worldwide. We understand the critical nature of marine equipment, where failure is not an option, which is why our valves are manufactured with precision and accompanied by a comprehensive Mill Test Report (MTR) for full traceability and material verification.
This marine-grade ball valve is constructed to withstand the harsh conditions at sea, including saltwater corrosion, vibration, and pressure fluctuations. Its robust design ensures long service life with minimal maintenance, a crucial factor for vessels operating far from port facilities. The valve's full-bore or reduced-bore design options provide excellent flow characteristics with low pressure drop, contributing to overall system efficiency. Whether for ballast systems, fuel lines, cooling water, or general service applications on cargo ships, tankers, offshore platforms, or naval vessels, this CB/T3191 compliant valve is a trusted component.
Key Features & Technical Advantages:
- Strict Standard Compliance: Manufactured in full accordance with the Chinese CB/T3191 standard for ship valves, ensuring compatibility with international marine specifications and shipbuilding practices.
- Superior Corrosion Resistance: Available in a range of marine-suitable materials. Bronze valves offer excellent resistance to seawater, while stainless steel (CF8M/316) and cast steel options provide enhanced strength for higher pressure applications.
- Full Material Traceability: Each valve is supplied with a Mill Test Report (MTR) that details the chemical composition and mechanical properties of the raw materials, providing essential documentation for quality assurance and regulatory compliance.
- Robust Sealing & Leak-Proof Design: Features advanced seat materials (such as PTFE, reinforced PTFE, or metal) and a stem sealing system designed to maintain a bubble-tight seal even under extreme conditions and repeated cycling.
- Versatile Operation & Mounting: Supports multiple actuation methods including manual lever, gearbox, pneumatic, and electric actuators. Connection types include flanged (ISO, ANSI, JIS, DIN standards), threaded (NPT, BSP), and butt-weld ends to suit any piping layout.
- Fire-Safe Design Option: Available with fire-safe features in accordance with API 607/API 6FA standards, where the secondary metal seat provides a seal in the event of a fire, protecting critical systems.
The technical specifications below outline the standard configurations available. Customizations for specific pressure ratings, temperatures, materials, and actuation packages are available upon request to meet unique project requirements.
| Parameter | Specification / Range |
| Design Standard | CB/T3191 |
| Nominal Diameter (DN) | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500 |
| Pressure Rating | PN10, PN16, PN25, Class150, Class300 |
| Body Material | Bronze (C95800), Stainless Steel (CF8/304, CF8M/316), Cast Carbon Steel (WCB) |
| Ball & Stem Material | Stainless Steel, Chrome Plated/Bronze (depending on body material) |
| Seat Material | PTFE, Reinforced PTFE, Metal (for fire-safe versions) |
| Temperature Range | Standard: -20°C to +150°C (PTFE seat). Extended ranges available. |
Benefits for Your Marine Operations:
- Enhanced System Reliability: Reduces the risk of in-service failures, which can lead to costly downtime, environmental hazards, and safety issues at sea.
- Simplified Procurement & Compliance: The CB/T3191 compliance and provided MTR simplify the approval process with ship classification societies (like ABS, DNV, LR, BV) and ease regulatory hurdles.
- Reduced Lifecycle Costs: Durable construction and reliable performance translate to lower maintenance requirements and a longer replacement interval, offering a favorable total cost of ownership.
- Operational Safety: The secure, quarter-turn operation allows for quick and positive shut-off, which is vital in emergency situations onboard a vessel.
- Global Supply Chain Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to your shipyard or port of call, supported by our experience in exporting to markets across North and South America, Europe, Asia, Africa, and Oceania.
Choosing Shanghai Zhibang's Marine Ball Valve means partnering with an established manufacturer whose products are trusted in global markets. Our ISO9001 certified quality management system governs every step of production, from material sourcing to final testing. The provision of a Mill Test Report is not just an added service; it is our standard practice, reflecting our transparency and commitment to quality. This valve is designed to perform under pressure, ensuring the safety and efficiency of your maritime assets. For detailed quotations, technical drawings, or to discuss custom requirements for your specific marine application, please contact our sales team. Let us provide you with a reliable valve solution that meets the exacting standards of the marine industry.
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 valves used on ships. Compliance ensures the valve's design, materials, manufacturing, and testing are suitable for marine environments, including resistance to vibration, corrosion, and specific pressure requirements common in shipboard systems. -
Q: Is the Mill Test Report (MTR) provided for every valve?
A: Yes. A comprehensive Mill Test Report is provided as standard documentation. It certifies the chemical and mechanical properties of the primary valve body material, offering traceability and proof of material grade, which is often required for marine project approvals. -
Q: Can this valve be used with seawater?
A: Absolutely. We recommend specific material grades for seawater service. Bronze (e.g., C95800 aluminum bronze) and stainless steel grades like 316/CF8M offer high resistance to chloride-induced corrosion from seawater. The appropriate material selection depends on the specific application and fluid. -
Q: What types of end connections are available?
A> The valve is available with flanged ends (to ISO, ANSI, JIS, or DIN standards), threaded ends (NPT or BSP), and butt-weld ends. The most common for marine applications are flanged connections for ease of installation and maintenance. -
Q: Do you offer actuated versions for remote operation?
A: Yes. In addition to manual lever or gear operation, we can supply the valve pre-fitted with pneumatic (air) or electric actuators. This allows for integration into automated control systems on modern vessels. -
Q: Are these valves accepted by major ship classification societies?
A> Valves manufactured to recognized standards like CB/T3191, along with proper material certification (MTR), form a solid basis for approval. Final approval is typically granted by the specific classification society (e.g., ABS, DNV, LR) based on the complete project documentation. Our valves are widely used in projects requiring such certifications. -
Q: What is the typical delivery lead time?
A: Lead times vary based on size, material, and quantity. Standard configurations from our inventory may ship quickly, while large or customized orders require production time. Please inquire with your specific requirements for an accurate schedule. -
Q: What is your main shipping port and export experience?
A> We primarily ship from Shanghai, Guangzhou, Hong Kong, and Beijing ports. With an annual export value between US$1-1.5 million, we have extensive experience delivering to diverse markets including North America, Europe, Southeast Asia, Africa, and the Middle East.
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