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316L Stainless Steel Marine Ball Valve CB/T3191 Standard, PN6.4MPa Pressure Rating
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Marine-grade 316L stainless steel ball valve designed to CB/T3191 standard with PN6.4MPa pressure rating. Offers superior corrosion resistance for seawater applications, reliable bubble-tight shut-off, and low-maintenance operation. Ideal for shipbuilding, offshore, and harsh environment fluid control, backed by ISO9001 manufacturing and global export expertise.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T3191 Marine Standard
Application:
Other, Marine and Shipbuilding Systems
Material:
316L Stainless Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
CB/T3191 Marine Standard
Application
Other, Marine and Shipbuilding Systems
Material
316L Stainless Steel
Pressure Rating
PN6.4MPa
Valve Type
Ball Valve
Connection Type
Flanged (Standard), Optional
Operation
Manual Lever / Gearbox (Optional)
Seat Material
PTFE / Reinforced PTFE
Temperature Range
-20°C to 150°C (Standard)
As a specialized manufacturer with a strong presence in the global marine industry, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance 316L Stainless Steel Marine Ball Valve. Engineered to meet the rigorous CB/T3191 standard and rated for PN6.4MPa pressure, this valve is designed to deliver exceptional reliability and longevity in the most demanding seawater and corrosive fluid handling applications. Leveraging our manufacturing expertise since 2016 and a robust ISO9001-certified quality management system, we provide a critical component that ensures operational safety and efficiency for shipbuilders, shipyards, and offshore operators worldwide.
This marine ball valve is constructed from premium 316L stainless steel, renowned for its superior corrosion resistance, especially against chlorides found in seawater. Its design and performance are strictly governed by the CB/T3191 Chinese marine standard, ensuring compliance with key specifications for maritime use. The valve features a full-port design for minimal pressure drop and a bubble-tight shut-off, crucial for critical marine piping systems.
Key Features & Technical Advantages:
- Superior Corrosion Resistance: The 316L stainless steel body offers excellent resistance to pitting and crevice corrosion, making it ideal for seawater, bilge, ballast, and chemical service lines.
- Robust Pressure Handling: With a pressure rating of PN6.4MPa, the valve is built to withstand high-pressure conditions in various marine applications, from engine cooling to fuel transfer systems.
- Reliable Sealing System: Equipped with advanced PTFE or reinforced PTFE seats, ensuring a durable, low-friction seal that remains effective across a wide temperature range.
- Versatile Operation: Available with a standard manual lever for quick operation. Optional gearbox actuators can be provided for valves in hard-to-reach locations or for automated control systems.
- Low Maintenance Design: The simple yet robust quarter-turn operation and corrosion-resistant materials significantly reduce the need for frequent maintenance, lowering total lifecycle costs.
- Broad Compatibility: Standard flanged connections ensure easy integration into existing marine piping networks conforming to common international flange standards.
Technical Specifications:
| Parameter | Specification |
| Body Material | 316L Stainless Steel (CF3M) |
| Design Standard | CB/T3191 (Marine Standard) |
| Pressure Rating | PN6.4MPa (Approx. 928 PSI) |
| Temperature Range | -20°C to 150°C (Standard Seat) |
| Port Type | Full Port (Reduced Port Optional) |
| Seat Material | PTFE / Reinforced PTFE (Standard) |
| Operation | Manual Lever (Gearbox Optional) |
| Connection | Flanged (RF or FF faces, sizes customizable) |
| Fire Safe Design | Available upon request |
Benefits for Your Operations:
- Enhanced System Safety: The reliable shut-off and high-pressure rating contribute to safer shipboard operations, preventing leaks and potential hazards.
- Extended Service Life: The corrosion-resistant 316L construction ensures the valve performs reliably for years, even in harsh marine environments, reducing replacement frequency.
- Operational Efficiency: The full-port design minimizes flow resistance, helping to maintain optimal system pressure and pump efficiency.
- Global Compliance: Manufactured to CB/T3191, a recognized marine standard, facilitating acceptance in shipbuilding and repair projects, particularly in key markets across Asia and beyond.
Trust in a supplier with proven global reach and manufacturing rigor. Shanghai Zhibang Valve has been serving clients in North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Mid East, and Western Europe since 2016, with an annual export value reflecting consistent quality and reliability. Our valves are shipped from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring flexible and efficient logistics. Choosing our 316L Stainless Steel Marine Ball Valve means investing in a component backed by ISO9001 certified processes, designed for durability, and trusted by marine professionals worldwide. Contact us today to discuss your specific requirements or to request a quotation for your next project.
Frequently Asked Questions (FAQ)
-
Q: What is the main advantage of using 316L stainless steel over standard 304 or 316 for marine valves?
A: 316L stainless steel has a lower carbon content than standard 316, which significantly enhances its resistance to sensitization and intergranular corrosion, especially in welded sections. This makes it the superior choice for prolonged exposure to seawater and other highly corrosive media common in marine applications. -
Q: Does compliance with the CB/T3191 standard guarantee acceptance in international shipbuilding projects?
A: While CB/T3191 is a respected Chinese marine standard, its acceptance depends on the specific project specifications and the classification society involved (e.g., ABS, DNV, LR). Our valve is engineered to high-quality benchmarks suitable for global use. We recommend confirming the required standards with your project manager or classification society, and we can often provide documentation or manufacture to other standards upon request. -
Q: Can this valve be used for both on/off service and flow control (throttling)?
A: This ball valve is primarily designed for reliable on/off (isolation) service. While it can be used for moderate throttling in some applications, prolonged use in a partially open position for flow control may accelerate wear on the seat and ball surfaces. For precise flow control, we recommend using a valve specifically designed for that purpose. -
Q: What types of actuators are compatible with this ball valve for remote operation?
A> The valve can be fitted with various actuators to enable remote or automated operation. We can supply or customize the valve to be compatible with pneumatic (double-acting or spring-return), electric, or hydraulic actuators. The standard manual lever can be easily replaced, and we offer optional gearboxes as a intermediate solution for manual operation with high torque. -
Q: What is the typical lead time for an order of these valves?
A> Lead times vary based on order quantity, specific size requirements, and optional features (like actuators or special seals). For standard sizes and configurations, we generally maintain some inventory. For larger or customized orders, typical production lead times range from 4 to 8 weeks. We provide a precise timeline upon receipt of your detailed inquiry. -
Q: Do you provide pressure test certificates and material documentation with the valves?
A> Yes. As an ISO9001:2015 certified manufacturer, we conduct rigorous factory acceptance tests, including hydrostatic pressure tests, on every valve. A standard manufacturer's data report (MDR) including material certificates (CMTR) and pressure test reports can be provided with the shipment, which is crucial for classification society approvals and quality records. -
Q: Are spare parts like seals and gaskets readily available for this model?
A> Absolutely. We maintain an inventory of common spare parts, including PTFE seats, stem seals (O-rings), and body gaskets. We recommend purchasing a maintenance kit with your initial order to ensure you have critical spares on hand, minimizing vessel downtime during routine maintenance. -
Q: What are the main application areas for this PN6.4MPa ball valve on a vessel?
A> This valve is suitable for a wide range of marine systems requiring robust and corrosion-resistant shut-off, including:
- Seawater cooling systems for main and auxiliary engines.
- Ballast and bilge systems.
- Fuel oil and lube oil transfer lines (compatible with the media).
- Firefighting systems (with optional fire-safe design).
- General service and utility lines handling water, air, or mild chemicals.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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