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Help CenterCB/T3191 Cast Steel Ball Valve for Marine Fuel Oil Transfer
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As a professional valve manufacturer with a strong focus on the maritime industry, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance CB/T3191 Cast Steel Ball Valve, engineered specifically for demanding marine fuel oil transfer applications. Established in 2016 and backed by ISO9001 quality management, we have built a reputation for reliability, exporting to global markets from North America to Oceania. This valve is a cornerstone of safe and efficient bunkering operations, designed to handle the rigorous requirements of ship-to-ship and shore-to-ship fuel transfer with unwavering integrity. Its robust construction ensures long-term service in corrosive marine environments, providing peace of mind for ship owners, operators, and port authorities.
Our CB/T3191 compliant ball valve is meticulously crafted to meet the stringent standards of marine service. The core of its reliability lies in the selection of materials and precision engineering.
- Robust Construction & Material Integrity: The valve body and ball are manufactured from high-grade cast steel, with common material grades including WCB for carbon steel, and CF8/CF8M (304/316 stainless steel) for enhanced corrosion resistance. This ensures exceptional strength and durability against the physical stresses and corrosive elements present in marine fuel oil systems.
- Superior Sealing Performance: We utilize advanced seat materials such as PTFE (Polytetrafluoroethylene) or reinforced PTFE, which offer excellent chemical resistance to various marine fuels and lubricants. For high-temperature or abrasive service, metal-seated options are available. The design ensures bubble-tight shut-off, preventing costly leaks and environmental hazards during transfer operations.
- Versatile Operation & Configuration: The valve is designed for flexible integration into your piping system. It is available with a standard lever for manual operation in accessible areas. For larger sizes or automated process control, it can be equipped with gear operators, pneumatic actuators, or electric actuators, allowing for remote operation and integration into shipboard control systems.
- Full Port Design for Efficient Flow: The full bore (full port) design minimizes pressure drop across the valve, ensuring efficient and rapid fuel transfer. This is critical for bunkering operations where time is a key factor. The smooth bore also reduces turbulence and the risk of cavitation.
- Fire-Safe Design Consideration: While specific fire-safe certifications (like API 607/6FA) are optional and available upon request, the valve's design incorporates features such as secondary metal seals that can provide a seal in the event of a fire, enhancing onboard safety.
- Anti-Static & Blow-Proof Stem Design: The stem is designed to prevent static electricity buildup, a crucial safety feature when handling flammable fuels. A blow-out proof stem ensures the stem cannot be ejected by internal pressure under any condition, protecting personnel and equipment.
Below is a summary of key technical specifications for common configurations:
| Parameter | Specification / Option |
|---|---|
| Design Standard | CB/T3191 (China Ship Standard) |
| Body Material | Cast Steel (A216 WCB), Stainless Steel (A351 CF8/CF8M) |
| Pressure Rating | Class 150, Class 300, PN16, PN25 |
| Size Range (Nominal Diameter) | DN15 (1/2") to DN300 (12") |
| Connection Standard | ASME B16.5 (RF/RTJ), JIS, DIN, GB |
| Seat & Seal Material | PTFE, RPTFE, PPL, Metal (Optional) |
| Temperature Range | -20°C to 200°C (Standard); Extended ranges available |
| Operation | Lever, Gearbox, Pneumatic Actuator, Electric Actuator |
The advantages of choosing our marine ball valve translate directly into tangible benefits for your operation. You gain a component that enhances operational safety through reliable shut-off and safety features, reduces maintenance downtime due to its durable construction, and improves transfer efficiency with its full-port design. Furthermore, compliance with the recognized CB/T3191 standard ensures compatibility and reliability within marine engineering specifications.
With an annual export value ranging between US$1 Million and US$1.5 Million and a presence in major global markets from Eastern Europe to Southeast Asia and the Americas, Shanghai Zhibang has proven its capability to deliver quality marine valves worldwide. Our products are shipped from key ports like Shanghai, Guangzhou, and Hong Kong, ensuring logistical efficiency. The ISO9001 certification underpins our commitment to consistent quality in every valve we produce. When you choose our CB/T3191 Cast Steel Ball Valve, you are not just purchasing a component; you are investing in the reliability of your fuel transfer system, backed by a manufacturer with a solid track record. Contact us today to discuss your specific requirements for marine fuel oil applications and receive a competitive quotation.
Frequently Asked Questions (FAQ)
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Q: What does "CB/T3191" mean, and is it internationally recognized?
A: CB/T3191 is a Chinese national standard ("CB" stands for "Chuan Bo" or Shipbuilding) specifically for marine valves. It defines the design, manufacturing, testing, and inspection requirements for valves used on ships and offshore platforms. While it is a Chinese standard, it is widely recognized and accepted in the global maritime industry, especially for vessels built or serviced in Asian shipyards. -
Q: Can this valve handle different grades of marine fuel oil, like MGO and HFO?
A: Yes, the valve is designed to be compatible with various marine fuels, including Marine Gas Oil (MGO) and Heavy Fuel Oil (HFO). The material selection, particularly the seat material (like PTFE), offers good chemical resistance. For HFO service, which may involve higher temperatures, specifying the appropriate temperature-rated seals or metal seats is recommended. -
Q: What flange standards are available?
A: We offer flanges conforming to multiple international standards to suit your piping system. Common options include ASME B16.5 (American standard with RF or RTJ face), JIS (Japanese standard), DIN (European standard), and GB (Chinese standard). Please specify your required standard when inquiring. -
Q: Is the valve suitable for cryogenic service or very high temperatures?
A: The standard temperature range is -20°C to 200°C. For cryogenic applications (e.g., LNG-related services) or sustained high-temperature service above 200°C, special designs with suitable low-temperature or high-temperature materials for body, ball, and seals are required. These are customizable options available upon request. -
Q: Do you provide actuators for automated operation?
A: Absolutely. While the valve comes standard with a manual lever, we can supply and pre-assemble it with pneumatic (double-acting or spring-return) or electric actuators. We can also provide gear operators for easier manual operation of larger-sized valves. Actuator brands and specifications can be discussed based on your control system requirements. -
Q: What kind of testing is performed on these valves before shipment?
A> Each valve undergoes rigorous testing, which typically includes a shell test (body strength test) and a seat leakage test per relevant standards (like API 598). The tests use water or air as the medium and check for any leaks. Test reports can be provided as part of the documentation package. -
Q: What is the typical delivery lead time?
A: Lead time depends on the valve size, material, pressure rating, and quantity. For standard specifications in common sizes, we often have stock or short production cycles. Generally, lead times range from 30 to 60 days for made-to-order batches. We provide a precise timeline upon order confirmation. -
Q: Can you provide valves with specific certifications like ABS, DNV, or LR?
A> Yes, we can arrange for third-party inspection and certification by major marine classification societies such as ABS, DNV, BV, LR, or CCS. This is an optional service that involves additional time and cost. Please inform us of your certification requirements during the inquiry stage.
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