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Help CenterCB/T3191 Marine Ball Valve OEM Factory: For Marine Engine Cooling Water and Bilge Systems
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As a professional manufacturer with a strong foundation since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-performance marine valves. Our CB/T3191 Marine Ball Valves are engineered to meet the rigorous demands of shipboard applications, particularly for critical systems like engine cooling water and bilge management. Built with precision and durability in mind, these valves ensure reliable flow control, superior sealing, and long service life in corrosive marine environments, helping to safeguard your vessel's operational integrity and efficiency.
Our marine ball valves are designed to provide exceptional performance where it matters most. Here are the key features and benefits that set our products apart:
- Robust Construction for Harsh Environments: Manufactured from premium materials such as bronze, stainless steel (CF8M/316), or cast steel (WCB), these valves offer excellent resistance to seawater corrosion, erosion, and biofouling. The full-bore or reduced-bore design minimizes pressure drop, ensuring efficient fluid transfer.
- Superior Sealing and Bubble-Tight Shut-off: Equipped with advanced seat materials like PTFE or reinforced PTFE, the valve provides a reliable, bubble-tight seal even after prolonged cycling. The precision-machined ball and stem assembly ensures smooth operation and prevents leakage.
- Versatile Operation and Installation: Available with manual lever handles, gear operators for larger sizes, or pneumatic actuators for remote control, offering flexibility for various shipboard layouts. Multiple connection ends—including flanged (ISO, ANSI, JIS standards), threaded (NPT, BSP), or butt-weld—facilitate easy integration into existing piping systems.
- Compliance with Marine Standards: The valves are manufactured in accordance with the Chinese CB/T3191 standard for marine valves and can be designed to meet other international standards such as GB, JIS, DIN, and ANSI, ensuring global compatibility and acceptance.
- Wide Range of Applications: Primarily designed for marine engine cooling water systems and bilge pumping systems, they are also suitable for general seawater service, ballast systems, fire-fighting lines, fuel oil transfer (with appropriate material selection), and other onboard fluid handling tasks.
To provide a clear overview of our product specifications, here is a detailed table outlining key technical parameters for our standard CB/T3191 Marine Ball Valve series:
| Parameter | Specification / Range |
| Design Standard | CB/T3191, with options for GB, ANSI, JIS, DIN |
| Nominal Diameter (DN) | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 |
| Pressure Rating | PN10, PN16, PN25; ANSI Class 150, Class 300 |
| Body Material | Bronze (C95800), Stainless Steel 316/316L, Cast Carbon Steel (WCB) |
| Ball & Stem Material | Stainless Steel 304/316, with chrome plating or other coatings optional |
| Seat & Seal Material | PTFE, Reinforced PTFE (RPTFE), PEEK, Metal Seated (for high-temp) |
| Temperature Range | Standard: -20°C to 150°C; Extended: up to 200°C with special seats |
| Operation Type | Manual Lever, Worm Gear Operator, Pneumatic/Hydraulic Actuator |
| Connection Type | Flanged (RF, FF), Threaded (NPT, BSPT, BSPP), Butt Weld, Socket Weld |
| Fire Safe Design | Available upon request (to API 607/API 6FA standards) |
| Anti-Static Device | Standard feature for safety in hydrocarbon service |
| Blow-Proof Stem | Integrated design to prevent stem ejection under pressure |
Choosing our marine ball valves translates into tangible benefits for your operations. You gain a component known for its reliability, which reduces the frequency of maintenance and the risk of costly system failures at sea. The corrosion-resistant construction extends the valve's lifespan, providing a better return on investment. Furthermore, the easy operation and installation save valuable time during both initial fit-out and any subsequent repairs or inspections. Our valves contribute to the overall safety and environmental compliance of your vessel by ensuring leak-free performance in critical systems.
With an annual export value ranging between US$1 Million and US$1.5 Million, Shanghai Zhibang Valve has established a robust global presence, supplying reliable valve solutions to markets across North and South America, Europe, Asia, Africa, and Oceania. Our operations are backed by an ISO9001-certified quality management system, ensuring consistent product quality from raw material inspection to final testing. Sourced directly from our factory in Shanghai, you benefit from competitive pricing, flexible OEM support, and efficient logistics through major ports like Shanghai, Guangzhou, Hong Kong, and Beijing. Trust in our expertise and proven track record to equip your marine applications with valves that perform under pressure. Contact us today to discuss your specific requirements or to request a detailed quotation.
Frequently Asked Questions (FAQ)
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Q: What is the primary application of your CB/T3191 Marine Ball Valve?
A: This valve is specifically designed for demanding marine environments. Its primary applications include controlling the flow in marine engine cooling water systems and bilge pumping systems, where reliable shut-off and corrosion resistance are critical. -
Q: What materials are typically used, and how do I choose?
A: Common body materials are bronze for general seawater service, stainless steel 316 for superior corrosion resistance, and cast steel for higher pressure/temperature applications. The choice depends on the fluid media, pressure, temperature, and specific environmental conditions on your vessel. -
Q: Are your valves compatible with international piping standards?
A: Yes. While designed to the CB/T3191 standard, our valves are manufactured with connection ends that comply with major international standards such as ANSI, DIN, JIS, and GB. Please specify your required flange or thread standard when inquiring. -
Q: Do you offer actuated versions of these ball valves?
A: Absolutely. Besides manual operation, we can supply valves equipped with pneumatic, hydraulic, or electric actuators for automated remote control, which is ideal for integration into modern ship automation systems. -
Q: What quality assurances do you provide?
A: Our manufacturing process is ISO9001 certified. Each valve undergoes rigorous pressure testing, shell testing, and seat leakage testing before shipment. Detailed test reports and material certificates are available upon request. -
Q: Can you produce valves according to our drawings or specifications (OEM)?
A: Yes, as a manufacturer, we specialize in OEM services. We can customize the valve's dimensions, materials, pressure ratings, and connection types based on your technical drawings and specifications. -
Q: What is the typical lead time for an order?
A: For standard specifications, the lead time is generally 15-30 days after order confirmation. For large quantities or custom-designed products, the lead time will be confirmed based on the specific requirements. -
Q: What are your main shipping terms and ports?
A: We support EXW, FOB, CIF, and other Incoterms. We ship regularly from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring flexible and efficient logistics to global destinations.
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