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Help CenterFull Port Trunnion Ball Valve, API 6D Design, Carbon Steel Construction for High Pressure Service
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As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd specializes in producing high-performance industrial valves for demanding applications. Our Full Port Trunnion Ball Valve, designed according to API 6D standards and constructed from robust carbon steel, is engineered to deliver reliable, long-lasting performance in high-pressure systems. This valve represents our commitment to providing solutions that enhance operational safety and efficiency for our global clients across diverse industries.
The core value of this valve lies in its ability to handle extreme pressures with minimal flow restriction, thanks to its full port design and sturdy trunnion mounting mechanism. It is an ideal choice for critical applications where pressure integrity and uninterrupted flow are paramount. We combine rigorous manufacturing processes with stringent quality control to ensure each valve meets the exacting requirements of international markets, from North America to Southeast Asia.
Key Features and Technical Advantages:
- API 6D Compliance: Manufactured in accordance with API 6D specifications for pipeline valves, ensuring design integrity, material suitability, and testing protocols suitable for oil, gas, and petrochemical services.
- Full Port (Full Bore) Design: Provides a ball port diameter equal to the pipeline inner diameter, minimizing pressure drop and allowing for full flow capacity, which is essential for pigging operations and high-volume transfer.
- Trunnion Mounted Ball: The ball is supported by trunnions (stem extensions), which absorb the system pressure thrust. This design prevents excessive seat load, reduces operating torque, and enhances valve longevity, especially in high-pressure and large-diameter applications.
- Carbon Steel Construction: The body, ball, and trunnions are made from high-grade carbon steel, offering excellent strength, durability, and resistance to deformation under high pressure. Material grades like A216 WCB are commonly used.
- Enhanced Sealing: Utilizes advanced seat materials such as PTFE or reinforced PTFE, providing tight shut-off, low friction, and good chemical resistance. Double block and bleed functionality is often achievable.
- Robust End Connections: Typically features flanged ends (ASME B16.5) for secure and leak-proof connection to piping systems. Other end types like welded are customizable.
- Operational Flexibility: Available in manual operation (lever or gear) or can be fitted with various actuators (electric, pneumatic, hydraulic) for remote or automated control.
- Fire Safe Design: Optional fire-safe construction available, where the seat design prevents catastrophic failure in case of fire, meeting API 607/6FA standards.
Detailed Technical Specifications:
| Parameter | Specification / Range |
|---|---|
| Design Standard | API 6D |
| Pressure Class (ANSI) | Class 150, Class 300, Class 600, Higher classes available |
| Size Range (Nominal) | 2" to 48" (DN50 to DN1200) |
| Body Material | Carbon Steel (e.g., A216 WCB) |
| Ball & Trunnion Material | Carbon Steel |
| Seat Material | PTFE, Reinforced PTFE, PEEK, Other polymers optional |
| End Connection | Flanged (ASME B16.5), Welded ends optional |
| Operation Mode | Manual (Lever/Gear), Actuated (Electric/Pneumatic) |
| Temperature Range | -20°C to +200°C (dependent on seat material) |
| Fire Safe Option | Available upon request (API 607/6FA) |
Benefits to Our Clients:
- System Efficiency: Full port design ensures minimal flow resistance, reducing energy consumption for pumping and maintaining high flow rates.
- Operational Safety & Reliability: The trunnion design and high-pressure rating provide a secure, stable valve operation, minimizing risk of failure in critical pipelines.
- Long Service Life & Low Maintenance: Robust carbon steel construction and optimized seat design reduce wear, leading to extended service intervals and lower lifecycle costs.
- Compatibility & Compliance: Adherence to API 6D facilitates integration into existing oil & gas infrastructure and meets project specification requirements.
- Customization & Support: We offer customization in size, pressure class, end type, actuation, and material options to fit specific project needs, backed by technical support.
Frequently Asked Questions (FAQ):
Q1: What is the main advantage of a trunnion-mounted ball valve over a standard floating ball valve for high pressure?
A: In a trunnion design, the ball is fixed on stems (trunnions), which absorb the pipeline pressure force. This prevents the ball from being forced into the seat under high pressure, reducing seat wear and operational torque. For high-pressure and large-diameter applications, this leads to more reliable sealing and easier operation.
Q2: Does "Full Port" mean the valve has zero pressure drop?
A: While a full port valve has a bore diameter matching the pipe ID, it does not eliminate pressure drop entirely. However, it significantly reduces flow restriction compared to a standard or reduced port valve, making it接近 to the pressure drop of the pipe itself, which is ideal for maintaining system pressure.
Q3: What typical pressure classes (ANSI) are available for this carbon steel valve?
A: Common pressure classes include ANSI Class 150, 300, and 600, suitable for a wide range of high-pressure services. Higher classes like Class 900 or 1500 are also available upon request for extremely high-pressure applications.
Q4: Can this valve be used for services other than oil and gas, such as water or chemicals?
A: Yes. While designed per API 6D for oil & gas pipelines, its robust construction makes it suitable for other high-pressure applications in power generation, chemical processing, water transmission, and industrial plants, provided the material compatibility (especially seat material) with the medium is verified.
Q5: Is fire-safe certification available?
A: Yes, a fire-safe design option is available. This includes features like secondary metal seats that maintain sealing in case of primary soft seat failure during a fire, typically meeting standards like API 607/6FA. This should be specified during ordering.
Q6: What actuation options are available?
A: The valve can be supplied as a manually operated valve with a lever or gearbox. For automated control, it can be fitted with electric actuators, pneumatic (air) actuators, or hydraulic actuators. The choice depends on your control system and power availability.
Q7: What is the typical delivery time for large diameter valves (e.g., over 24 inches)?
A: Delivery time varies based on specifications, quantity, and customization. For standard large-diameter valves, production typically takes several weeks. We maintain efficient logistics from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing to ensure timely shipment to global markets.
Q8: Does Shanghai Zhibang provide after-sales support and documentation?
A: Yes. As an ISO9001 certified manufacturer, we provide comprehensive documentation including test reports, material certificates, and operation manuals. We also offer after-sales technical support to assist with installation, operation, or maintenance queries.
Shanghai Zhibang Valve Manufacture Co., Ltd, established in 2016, has built a strong reputation through consistent quality and reliable service. Our ISO9001 certified manufacturing processes ensure that every Full Port Trunnion Ball Valve meets stringent performance criteria. With an annual export value reflecting our global reach across North America, South America, Europe, Asia, Africa, and Oceania, we have proven our capability to serve diverse industrial sectors. Our valves are shipped from key Chinese ports, facilitating smooth logistics to your destination.
Investing in our API 6D Carbon Steel Trunnion Ball Valve means investing in pipeline integrity, operational efficiency, and long-term cost savings. Its design directly addresses the challenges of high-pressure service, providing a solution that is both robust and intelligent. For your next critical pipeline project, choose a valve engineered for performance and backed by a manufacturer with a growing global footprint. Contact us today to discuss your specific requirements, request a quotation, or access our detailed technical data sheets.
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