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Help CenterCB/T3191 Marine Ball Valve PN10-16MPa Forged Steel Body DN10-DN50
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As a leading manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable fluid control solutions for demanding marine environments. Our CB/T3191 Marine Ball Valve, with a forged steel body and pressure ratings from PN10 to 16MPa, is engineered to deliver exceptional performance, durability, and safety in critical shipboard applications. With nearly a decade of industry experience since our establishment in 2016, we have consistently supplied high-quality valves to global markets, including North America, Southeast Asia, and Europe, building a reputation for precision and dependability. This valve represents our commitment to meeting the stringent standards of the maritime industry, offering a perfect blend of strength and precise control for seawater, fuel, and other onboard systems.
The core of this valve's reliability lies in its forged steel construction. Forging creates a denser, more uniform grain structure compared to casting, resulting in superior mechanical strength, impact resistance, and integrity under high pressure and thermal cycling. This makes it an ideal choice for the harsh, corrosive marine atmosphere. The full-port or reduced-port design ensures minimal pressure drop and efficient flow, which is crucial for system efficiency. Key technical specifications and advantages include:
- Superior Sealing Performance: Utilizes advanced seat materials like reinforced PTFE or metal seats, providing bubble-tight shut-off and excellent resistance to wear and corrosion from seawater and chemicals.
- Robust Stem Design: Features an anti-blowout stem that is securely retained within the valve body even under high pressure, enhancing operational safety.
- Easy Operation & Maintenance: The quarter-turn operation allows for quick open/close functions. A low-friction design and self-lubricating seats ensure smooth operation over long service intervals with minimal maintenance.
- Versatile End Connections: Standard flanged ends are designed for easy installation and secure piping integration. Other connection types like threaded or weld ends are customizable.
- Extended Service Life: The combination of high-grade forged steel, corrosion-resistant trim, and precision machining ensures a long operational lifespan, reducing total cost of ownership.
For buyers, this translates into tangible benefits: enhanced system safety by preventing leaks in critical lines, reduced downtime due to the valve's durability and reliability, and compliance with marine standards for vessel classification and operation. The table below outlines some primary specifications:
| Parameter | Specification |
| Product Standard | CB/T3191 |
| Nominal Diameter (DN) | 10, 15, 20, 25, 32, 40, 50 mm |
| Pressure Rating (PN) | 10, 16, 25, 40 (16MPa max) |
| Body Material | Forged Steel (A105, F304, F316, etc.) |
| Ball Material | Stainless Steel, Chrome Plated |
| Seat Material | PTFE, Reinforced PTFE, Metal |
| Operation | Lever, Gear Operator (for high torque) |
Our global reach, with an annual export value ranging between US$1 Million and US$1.5 Million and shipments from major ports like Shanghai, Guangzhou, and Hong Kong, demonstrates our capability to reliably serve partners worldwide. We understand the critical nature of marine components, and our CB/T3191 valve is a product of rigorous testing and quality control under our ISO9001 framework. Choosing our forged steel marine ball valve means investing in a component that safeguards your vessel's operations, minimizes lifecycle costs, and meets international maritime expectations. Contact us today to discuss your specific requirements or to request a detailed quotation for your project.
Frequently Asked Questions (FAQ)
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Q: What does the "CB/T3191" standard refer to?
A: CB/T3191 is a Chinese national standard specifically for marine forged steel flanged ball valves. It defines the design, materials, manufacturing, testing, and inspection requirements to ensure the valves are suitable for marine service conditions. -
Q: Is this valve suitable for seawater service?
A: Yes, it is designed for marine environments. When ordered with appropriate materials like 316 stainless steel trim and PTFE seats, it offers good resistance to corrosion from seawater, bilge water, and other shipboard fluids. -
Q: What is the difference between PN10 and 16MPa pressure ratings?
A: PN10 is a nominal pressure rating (approx. 10 bar), while 16MPa is a metric pressure rating (160 bar). Our valve series covers this range, with specific models designed for different pressure classes. It's important to select the correct rating for your system's maximum working pressure. -
Q: Can the valve be supplied with pneumatic or electric actuators?
A: Yes, actuation is an available option. The valve can be configured with pneumatic, electric, or hydraulic actuators for remote or automated control systems. Please specify your requirements when inquiring. -
Q: What are the available end connection types?
A: The standard connection is flanged as per CB/T3191. However, other end types like threaded (NPT, BSP) or butt-weld ends can be provided as a customization to suit your piping design. -
Q: Do you provide fire-safe certified versions?
A: Fire-safe design versions, which include secondary metal seals to prevent leakage in case of a fire, are available upon request. Please indicate if you need compliance with specific fire-safe standards like API 607 or ISO 10497. -
Q: What is your typical lead time for orders?
A: Lead time depends on order quantity, specification complexity, and material availability. For standard configurations, we generally maintain stock for common sizes. We provide a clear production schedule upon order confirmation. -
Q: How do you ensure quality control?
A: Our manufacturing process is ISO9001 certified. Every valve undergoes a series of tests, including shell test, seat test (air or water), and operational torque check, to ensure it meets the required performance and safety standards before shipment.
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