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Help CenterMarine Ball Valve CB/T3191 for FPSO, Anti-Static & Blowout-Proof Stem, Full Port
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As a professional manufacturer with a strong foundation since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in delivering high-performance fluid control solutions for demanding offshore applications. Our Marine Ball Valve, engineered in strict compliance with the CB/T3191 standard, is specifically designed to meet the rigorous safety and operational challenges of Floating Production Storage and Offloading (FPSO) units. This valve combines robust construction with critical safety features like an anti-static and blowout-proof stem, ensuring reliable shut-off and enhanced personnel and asset protection in volatile marine environments. With an annual export value demonstrating our global reach, we are committed to providing valves that deliver durability, safety, and peace of mind for your critical offshore operations.
Our CB/T3191 Marine Ball Valve is engineered for superior performance where failure is not an option. Key features and benefits include:
- Enhanced Safety Design: The integrated anti-static feature prevents spark generation from static electricity during operation, a critical requirement for handling flammable fluids. The blowout-proof stem design ensures the stem remains securely in place even under extreme pressure, preventing catastrophic failure.
- Full Port Configuration: Offers minimal flow restriction with a bore diameter equal to the pipeline ID, reducing pressure drop and turbulence. This maximizes flow efficiency, lowers pumping energy costs, and allows for easier pigging or inspection of the pipeline.
- Rugged Construction for Marine Use: Manufactured from high-grade materials such as carbon steel or stainless steel with superior corrosion-resistant coatings, the valve is built to withstand harsh saline atmospheres, constant vibration, and wide temperature fluctuations typical of offshore platforms.
- Versatile Operation & Installation: Available with manual lever, gearbox, or pneumatic/electric actuation to suit various automation needs. It supports multiple end connections (flanged, threaded, welded) for seamless integration into existing FPSO piping systems.
- Reliable Sealing Performance: Utilizes advanced seat materials (such as reinforced PTFE or metal) that provide excellent sealing integrity across a wide pressure and temperature range, ensuring zero leakage for long service intervals.
The technical specifications of our Marine Ball Valve can be customized to your project's specific requirements. Below is a reference table outlining common configurations:
| Parameter | Details / Options |
| Design Standard | CB/T3191 (Chinese Ship Standard) |
| Size Range | DN15 - DN600 (1/2" - 24") or custom |
| Pressure Class | PN16, PN25, PN40, ANSI 150, ANSI 300, etc. |
| Body Material | WCB Carbon Steel, CF8/CF8M Stainless Steel, Duplex Steel |
| Seat Material | Reinforced PTFE, RPTFE, Metal (Stellite) |
| Stem Material | Stainless Steel (SS304, SS316) with Anti-Static Design |
| Fire Safe Design | Available upon request (API 607/API 6FA standards) |
| Temperature Range | -29°C to +200°C (standard), extended ranges possible |
Choosing our valve provides tangible benefits for FPSO operators and shipbuilders. The full port design enhances process efficiency and reduces wear. The safety-focused stem design mitigates risks associated with static discharge and high-pressure blowouts, contributing to overall platform safety compliance. Furthermore, the valve's robust construction minimizes maintenance needs and extends service life, lowering the total cost of ownership even in the most corrosive offshore environments.
Backed by our ISO9001-certified manufacturing processes, Shanghai Zhibang Valve ensures every Marine Ball Valve meets stringent quality control standards before shipment. Our proven track record, reflected in an annual export value of US$1-1.5 Million and a presence across major global markets including North America, Europe, Southeast Asia, and the Middle East, demonstrates our reliability as a supplier. We support flexible logistics with shipments available from key ports like Shanghai, Guangzhou, Hong Kong, and Beijing. For your next FPSO or marine project, partner with us for a valve solution that prioritizes safety, reliability, and performance. Contact our team today to discuss your specifications and receive a competitive quotation.
Frequently Asked Questions (FAQ)
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What does "CB/T3191" mean, and is it internationally recognized?
CB/T3191 is a Chinese national standard specifically for marine valves, detailing technical requirements for design, materials, testing, and inspection. While it is a Chinese standard, its stringent specifications for pressure, temperature, and corrosion resistance are well-regarded and commonly accepted in international marine projects, especially when specified for vessels or platforms built to certain classifications. -
Why is an anti-static stem necessary for an FPSO ball valve?
FPSOs often process hydrocarbons, which can generate static electricity during fluid flow. An anti-static stem provides a conductive path to safely ground any static charge, preventing spark ignition—a critical safety feature in potentially explosive atmospheres onboard. -
How does the blowout-proof stem mechanism work?
The stem is designed with a safety shoulder or retaining mechanism inside the valve body. Under extreme internal pressure, this feature physically prevents the stem from being ejected from the valve, containing the pressure within the system and protecting personnel from injury. -
Can this valve be used for services other than oil and gas on an FPSO?
Yes. While designed with hydrocarbon service in mind, its robust, corrosion-resistant construction makes it suitable for various marine applications, including seawater cooling, ballast systems, chemical injection lines, and utility services, provided the materials are compatible with the medium. -
What are the advantages of a full port ball valve over a standard port one?
A full port valve has a bore equal to the pipe's inner diameter, offering minimal pressure drop, higher Cv (flow coefficient), reduced cavitation risk, and allowing for the passage of pipeline inspection gauges (pigs). This leads to improved system efficiency and operational flexibility. -
Do you provide actuated versions of this valve?
Yes. We can equip this ball valve with pneumatic, electric, or hydraulic actuators for remote or automated operation. Actuator selection, along with necessary accessories like limit switches and solenoids, can be customized based on your control system requirements. -
What is your lead time for custom-sized or specially coated valves?
Lead times vary based on order complexity and quantity. Standard sizes and configurations typically have shorter lead times. For custom requirements, our engineering team will provide a specific timeline upon review of your detailed specifications. -
How do you ensure quality control for marine-grade valves?
Our ISO9001 quality management system governs the entire production process. Each valve undergoes rigorous material checks, machining inspections, pressure testing (shell and seat), and functional testing. Certificates of conformance and test reports are provided with shipment.
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