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Help CenterCB/T3191 Marine Ball Valve DN10-DN50 for Marine Engine Applications
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As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions for the demanding marine industry. Our CB/T3191 Marine Ball Valves, designed specifically for DN10-DN50 pipelines in marine engine applications, represent our commitment to reliability, durability, and safety. Engineered to withstand harsh maritime environments, these valves ensure precise flow control for critical systems such as fuel lines, cooling water, and lubrication circuits, contributing directly to vessel operational integrity and efficiency.
These marine ball valves are constructed to meet the rigorous CB/T3191 standard, a Chinese shipbuilding industry specification that guarantees their suitability for marine service. The compact and robust design allows for easy installation and maintenance in the confined spaces typical of engine rooms. Key features include:
- Superior Corrosion Resistance: Available in cast steel with advanced coatings or optional stainless steel bodies, providing excellent protection against saltwater, moisture, and chemical corrosion.
- Reliable Sealing Performance: Utilizes PTFE or reinforced PTFE seats, ensuring a bubble-tight seal, low torque operation, and long service life even with frequent cycling.
- Versatile Connection Options: Offered with standard threaded ends (NPT, BSP) for direct piping integration. Flanged connections are available upon request for specific system requirements.
- Safe and Efficient Operation: Features a lever handle for quick 90-degree on/off operation. For higher pressure applications or larger sizes, a gearbox operator can be specified for easier handling.
- Broad Fluid Compatibility: Suitable for a wide range of media including seawater, fresh water, diesel fuel, lubricating oil, and compressed air within specified temperature and pressure limits.
The technical specifications of our CB/T3191 Marine Ball Valve series are detailed in the table below, showcasing the range and capabilities available.
| Parameter | Specification / Option |
|---|---|
| Product Standard | CB/T3191 |
| Nominal Diameter (DN) | DN10, DN15, DN20, DN25, DN32, DN40, DN50 |
| Pressure Rating (PN) | PN16, PN25 |
| Body Material | Cast Steel (Standard), Stainless Steel CF8/CF8M (Optional) |
| Ball & Stem Material | Stainless Steel |
| Seat Material | PTFE, Reinforced PTFE (RPTFE) |
| Temperature Range | -20°C to 150°C |
| Connection Type | Threaded (NPT/BSP), Flanged (Optional) |
Choosing our valves brings distinct advantages to shipbuilders, repair yards, and marine equipment suppliers. The precise manufacturing ensures minimal pressure drop and smooth operation, optimizing system performance. The robust construction reduces the frequency of maintenance and replacement, lowering the total cost of ownership. Furthermore, compliance with the CB/T3191 standard provides assurance of quality and fitness for purpose, which is critical for classification society approvals and overall vessel safety.
Backed by our ISO9001-certified quality management system and nearly a decade of manufacturing expertise since 2016, Shanghai Zhibang guarantees consistent product quality. Our global reach, evidenced by exports across North America, South America, Europe, Asia, Africa, and Oceania, underscores the international acceptance of our valves. With an annual export value ranging between US$1 Million and US$1.5 Million, we have the capacity and experience to support both large-scale projects and individual orders. We ship from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring efficient logistics. For a reliable, certified, and performance-proven solution for your marine engine piping needs, contact us to discuss your specifications or request a sample.
Frequently Asked Questions (FAQ)
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What does the CB/T3191 standard signify?
CB/T3191 is a Chinese national professional standard for shipbuilding, specifically for forged steel flanged and threaded ball valves. Valves manufactured to this standard are designed and tested to meet the specific requirements for installation and operation in marine environments, ensuring reliability and safety. -
Are these valves suitable for seawater service?
Yes, absolutely. When specified with appropriate materials such as stainless steel bodies (CF8/CF8M) and corrosion-resistant internals, these valves are well-suited for handling seawater, ballast water, and other corrosive marine fluids. -
Can I get valves with flanged connections instead of threaded?
Yes, flanged connections are an available option. Please specify your required flange standard (e.g., ANSI, JIS, DIN) and pressure class when inquiring or placing an order for customization. -
What is the lead time for an order?
Lead times vary based on order quantity, material selection, and customization. Standard configurations typically have shorter lead times. We provide specific delivery schedules upon receipt of your detailed inquiry. -
Do you provide documentation for classification society approval?
We can provide standard product documentation including material certificates, test reports, and certificates of conformity. Specific requirements for classification society approvals should be discussed in advance so we can prepare the necessary documentation package. -
What maintenance is required for these ball valves?
These are designed as low-maintenance valves. Periodic visual inspection for leaks and occasional lubrication of the stem (if applicable) are generally recommended. The full-bore design also minimizes pressure drop and sediment buildup. -
Are these valves suitable for fuel oil lines?
Yes, with PTFE or RPTFE seats, these valves provide excellent sealing for fuel oil, lubricating oil, and other hydrocarbon-based fluids within the specified temperature and pressure ratings. -
What is your payment term and minimum order quantity (MOQ)?
We offer flexible payment terms such as T/T and L/C. The MOQ depends on the valve size and material; we encourage you to contact our sales team for specific details tailored to your needs.
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