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Help CenterFire-Safe Design API 6D Marine Ball Valve, A350 LF2 Material, Bolted Bonnet
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Shanghai Zhibang Valve Manufacture Co., Ltd., a professional valve manufacturer established in 2016, is proud to present our high-performance Fire-Safe Design API 6D Marine Ball Valve. Engineered for the most demanding offshore, marine, and oil & gas applications, this valve is constructed from premium A350 LF2 material and features a robust bolted bonnet design. We understand that safety and reliability are non-negotiable in critical fluid control systems. Our valve is meticulously designed to provide a secure, long-lasting seal even under extreme fire conditions, ensuring operational continuity and protecting valuable assets. With an annual export value reaching US$1.5 million, our products are trusted by partners across North America, Southeast Asia, Europe, and beyond.
This marine ball valve is not just a component; it's a critical safety device. Its core value lies in its dual functionality: providing excellent shut-off during normal operations and maintaining integrity during a fire emergency. The fire-safe design ensures that the primary and secondary seals work in tandem to prevent catastrophic fluid release, which is paramount for platform safety, environmental protection, and compliance with international maritime and industrial safety regulations.
Key Product Features & Technical Advantages:
- Superior Fire Safety: The valve is designed and tested to meet stringent fire-safe standards. In the event of a fire, the polymer seats are consumed, but the metal-to-metal secondary sealing surfaces automatically engage, maintaining a bubble-tight seal and preventing escalation of the incident.
- Exceptional Material Strength: The body, bonnet, and ball are crafted from A350 LF2, a low-temperature carbon steel forging known for its excellent toughness, impact resistance, and suitability for low-temperature service, making it ideal for harsh marine environments.
- Robust Bolted Bonnet: The bolted bonnet construction offers superior pressure containment and allows for easier in-line maintenance and inspection compared to other designs, reducing downtime and lifecycle costs.
- API 6D Compliance: Manufactured in accordance with API 6D specification for pipeline valves, ensuring dimensional interchangeability, proven design principles, and reliable performance in pipeline service.
- Versatile Configurations: Available in full port and reduced port designs, with a wide range of end connections (flanged, butt-weld, socket-weld) and actuation options (manual lever, gearbox, pneumatic, electric) to fit any system requirement.
- Anti-Static & Blowout Proof Stem: Integrated features ensure safe operation by preventing static electricity buildup and guaranteeing the stem cannot be ejected under pressure.
Technical Specifications at a Glance:
| Parameter | Specification |
|---|---|
| Design & Manufacturing Standard | API 6D, API 608 |
| Fire Test Standard | API 607, API 6FA, BS 6755 Part 2 |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 (ASME B16.34) |
| Size Range (Nominal) | DN15 (1/2") to DN600 (24") |
| Seat Material Options | PTFE, Reinforced PTFE, PEEK, Metal (Inconel/Stellite) |
| Stem Seal | Graphite Packing or O-Rings (Fire-Safe design) |
| Operation Temperature | Standard: -29°C to 200°C; Low-Temp: Down to -46°C (A350 LF2) |
Benefits for Your Operations:
- Enhanced Safety Compliance: Facilitates compliance with SOLAS, IMO, and various classification society rules (ABS, DNV, LR, etc.) for marine and offshore applications.
- Reduced Risk & Liability: Minimizes the risk of fire-related system failure, protecting personnel, equipment, and the environment.
- Long Service Life & Low Maintenance: The corrosion-resistant A350 LF2 material and robust design ensure durability in saline and corrosive atmospheres, leading to lower total cost of ownership.
- Global Supply Chain Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and efficient delivery to your global projects.
As an ISO9001 certified manufacturer, Shanghai Zhibang Valve is committed to consistent quality in every product we ship. Our valves are the result of rigorous engineering, advanced manufacturing processes, and strict quality control. They are proven in diverse markets from the oil fields of the Middle East to the shipping lanes of Southeast Asia and the industrial plants of Western Europe. When you choose our Fire-Safe API 6D Marine Ball Valve, you are not just purchasing a valve; you are investing in peace of mind, operational integrity, and a partnership with a reliable global supplier. Contact us today to discuss your project specifications and request a detailed quotation. Let us provide you with the reliable fluid control solution your critical application demands.
Frequently Asked Questions (FAQ)
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Q: What does "fire-safe" mean for a ball valve?
A: A fire-safe ball valve is designed to maintain sealing capability during and after exposure to fire. Standard polymer seats may melt, but a fire-safe valve has a secondary metal seal (often between the ball and body) that engages to prevent major leakage, meeting specific test standards like API 607. -
Q: Why is A350 LF2 material specified for this marine valve?
A: A350 LF2 is a forged carbon steel alloy specifically designed for low-temperature service. It offers excellent notch toughness and impact resistance at temperatures as low as -46°C, which is crucial for offshore and marine environments where cold conditions are encountered. -
Q: Can this valve be used for services other than marine applications?
A: Absolutely. While designed for marine rigor, its fire-safe API 6D design makes it equally suitable for onshore oil & gas pipelines, petrochemical plants, LNG terminals, and any other application requiring high-integrity, fire-safe isolation valves. -
Q: What is the advantage of a bolted bonnet over a welded or screwed bonnet?
A: A bolted bonnet allows for easier disassembly and maintenance in the field without removing the valve from the pipeline. It provides a strong, reliable pressure boundary and is the preferred design for larger sizes and higher pressure classes where frequent inspection might be needed. -
Q: Do you provide actuated versions of this valve?
A> Yes. We offer a complete range of actuation solutions. The valve can be fitted with pneumatic actuators, electric actuators, or hydraulic actuators based on your control system requirements. Gear operators are also available for manual operation of larger valves. -
Q: What certifications do you provide with the valve?
A> As an ISO9001 certified manufacturer, we provide a material test certificate (MTC) and a certificate of compliance (COC) stating conformance to API 6D. Specific fire test certificates (e.g., for API 607) for the valve design are available upon request. -
Q: What is your lead time for standard sizes?
A> Lead times vary based on size, pressure class, and configuration. For standard flanged valves in common sizes (e.g., 2" to 12", Class 150/300), typical production lead time is 4-8 weeks. We recommend contacting our sales team with your specific requirements for an accurate schedule. -
Q: How do I determine the correct seat material for my service?
A> Seat selection depends on the fluid media, temperature, pressure, and required fire-safe rating. PTFE is common for general service, while reinforced PTFE or PEEK handles higher temperatures. Metal seats are for severe service. Our engineering team can assist you in selecting the optimal material.
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