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Help CenterCB/T3191 Marine Ball Valve Flanged End Stainless Steel 316L DN80-DN150
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a professional manufacturer dedicated to producing high-quality industrial valves for global markets. With an annual export value ranging between US$1 Million and US$1.5 Million and operations certified under ISO9001, we bring reliable engineering and manufacturing expertise to every product. Our CB/T3191 Marine Ball Valve with Flanged End in Stainless Steel 316L is engineered specifically for demanding marine and offshore applications, offering superior corrosion resistance, durability, and operational reliability in harsh environments.
This valve series is designed to meet the stringent requirements of shipbuilding, port infrastructure, offshore platforms, and other marine systems. Available in sizes DN80 to DN150, it provides a robust solution for fluid control where longevity and performance under pressure are critical. As a manufacturer, we ensure precise adherence to the CB/T3191 standard, guaranteeing compatibility and safety within marine piping systems.
The core value of this valve lies in its combination of a high-grade material and a practical design. Stainless Steel 316L offers exceptional resistance to chloride-induced corrosion, pitting, and crevice corrosion—common challenges in saltwater environments. The flanged end design facilitates secure, leak-proof connections, simplifying installation and maintenance. Whether for ballast systems, fuel lines, cooling circuits, or general service pipelines on vessels, this valve delivers dependable shut-off and control.
- Premium Material Construction: The entire valve body, ball, stem, and critical internal components are crafted from Stainless Steel 316L. This material provides enhanced resistance to corrosion, especially against seawater, chemicals, and high-humidity conditions, ensuring a long service life.
- Standard-Compliant Design: Manufactured in accordance with the Chinese CB/T3191 standard for marine valves, ensuring dimensional accuracy, pressure ratings, and performance metrics suitable for marine applications.
- Flanged End Connection: Features flanged ends compatible with standard piping flanges (e.g., ANSI, DIN, JIS standards can be customized). This design ensures a robust, sealed connection that is easy to assemble, disassemble, and inspect.
- Full Port Design: Typically designed as a full port ball valve, minimizing flow resistance and pressure drop, allowing for efficient fluid passage suitable for various marine systems.
- Robust Sealing System: Utilizes high-performance sealing materials (options include PTFE, reinforced PTFE, or other elastomers) suitable for a wide temperature range and resistant to marine media.
- Operational Flexibility: Can be operated manually via a handwheel/lever or adapted for pneumatic/electric actuation (available upon request), allowing for integration into automated control systems.
- Size Versatility: Available in a practical range of nominal diameters from DN80 (approximately 3 inches) to DN150 (approximately 6 inches), covering common pipeline sizes in marine engineering.
| Parameter | Details / Range |
| Product Standard | CB/T3191 |
| Primary Material | Stainless Steel 316L (Body, Ball, Stem) |
| End Connection Type | Flanged End |
| Size Range (Nominal Diameter) | DN80, DN100, DN125, DN150 |
| Pressure Rating (PN) | Commonly PN16, PN25, or higher (customizable) |
| Temperature Range | Typically -20°C to +200°C, depending on seals (available upon request) |
| Sealing Material Options | PTFE, Reinforced PTFE, Special Elastomers (optional) |
| Operation Mode | Manual (lever/handwheel), or with Actuator (pneumatic/electric) |
| Flow Characteristic | Full Port (minimal flow restriction) |
| Main Applications | Marine Shipbuilding, Offshore Platforms, Port Pipelines, Ballast Systems, Fuel/Cooling Lines |
- Enhanced System Reliability: The corrosion-resistant 316L material significantly reduces failure risks due to corrosion, leading to fewer maintenance interventions and higher system uptime.
- Simplified Installation & Maintenance: Flanged ends allow for straightforward bolting to existing pipelines, making installation quicker and future maintenance or replacement easier without specialized tools.
- Cost-Effective Long-Term Solution: While the initial investment might be higher than some alternatives, the extended service life and reduced maintenance costs of a 316L valve offer a lower total cost of ownership over time.
- Compliance & Safety: Adherence to the CB/T3191 standard ensures the valve meets recognized specifications for marine use, contributing to the overall safety and compliance of your piping system.
- Flexibility for System Design: The available size range and customizable options (pressure, actuation, seals) allow engineers to select the precise valve configuration for their specific application requirements.
Shanghai Zhibang Valve backs this product with solid manufacturing credentials. Our ISO9001 certification underpins a consistent quality management system for all our valves. With annual exports reaching US$1 Million to US$1.5 Million, we have proven experience supplying to diverse markets including North America, South America, Europe, Asia, Africa, and Oceania. Our products are shipped from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, ensuring efficient logistics. Choosing our CB/T3191 Marine Ball Valve means partnering with a reliable manufacturer committed to delivering valves that perform reliably in the challenging marine environment, protecting your assets and operations.
We encourage marine engineers, shipbuilders, and offshore project managers to consider this valve for applications where durability and corrosion resistance are paramount. For specific technical requirements, pressure ratings, or customizations, please contact us to discuss how we can tailor this product to your exact needs.
Q1: What is the main advantage of using Stainless Steel 316L for a marine ball valve?
A: Stainless Steel 316L contains molybdenum, which greatly enhances its resistance to corrosion from chlorides, such as those present in seawater. This makes it significantly more durable and suitable for long-term use in marine and offshore environments compared to standard stainless steels like 304.
Q2: Does the CB/T3191 standard imply specific pressure ratings?
A: The CB/T3191 standard specifies dimensions, materials, and general design requirements for marine valves. The specific pressure rating (PN value) is often determined by the design and can be customized. Common ratings for these sizes are PN16 or PN25, but higher ratings are available upon request.
Q3: Can this flanged valve connect to piping systems using different flange standards (e.g., ANSI, DIN)?
A: Yes. While manufactured to CB/T3191, the flanged dimensions can be produced to match other common international standards such as ANSI, DIN, or JIS upon request. It is important to specify your required flange standard when ordering.
Q4: Is the valve suitable for automated control systems?
A: Absolutely. This ball valve can be supplied as a manual valve or can be equipped with mounting pads for the addition of pneumatic or electric actuators. We offer actuation options to integrate the valve into automated marine control systems.
Q5: What media or fluids is this valve designed to handle?
A: It is designed for a wide range of media common in marine applications, including seawater, fresh water, ballast water, fuels, lubricants, and various chemicals. The compatibility depends on the selected sealing material; we can recommend the appropriate seals for your specific media.
Q6: What is the typical service life of this valve in a seawater environment?
A: With proper application and maintenance, the Stainless Steel 316L construction provides a very long service life, often exceeding many years even in continuous seawater exposure. The lifespan is influenced by operating conditions (pressure, temperature, cycling frequency) and the chosen sealing materials.
Q7: Are smaller or larger sizes than DN80-DN150 available?
A: The standard offering for this specific product line covers DN80 to DN150. However, as a manufacturer, we produce a wide range of valves. Smaller (DN15-DN50) or larger (DN200+) marine ball valves in Stainless Steel 316L may be available; please inquire for special size requirements.
Q8: What packaging and shipping options are provided?
A: Valves are typically packaged in sturdy wooden cases or cartons to prevent damage during transit. We ship from ports in Shanghai, Guangzhou, Hongkong, and Beijing, offering flexible logistics solutions to meet your delivery timelines and destination requirements.
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