API 6D Trunnion Ball Valve With Pneumatic Actuator, Anti-Static Device, Blowout-Proof Stem
Product Spotlights
As a leading manufacturer with a strong commitment to industrial safety and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium API 6D Trunnion Ball Valve equipped with a Pneumatic Actuator, an integrated Anti-Static Device, and a Blowout-Proof Stem. Engineered for the most demanding applications in oil & gas, petrochemical, and power generation industries, this valve represents the culmination of our expertise gained since 2016 and our dedication to the ISO9001 quality management system. This product is designed not just to control flow, but to ensure operational integrity, protect personnel, and safeguard critical infrastructure under high-pressure and hazardous conditions. Its robust construction and advanced safety features make it a trustworthy choice for global partners seeking durable and compliant fluid control solutions.
The core value of this valve lies in its enhanced safety and reliable performance. The trunnion-mounted design provides superior sealing and reduces operating torque, making it ideal for large-diameter, high-pressure services. Coupled with a precise pneumatic actuator, it enables efficient remote or automated operation, integral for modern process control systems.
Key Features & Technical Advantages:
- API 6D Compliance: Manufactured strictly in accordance with API 6D specifications for pipeline valves, ensuring full compliance with international standards for design, testing, and fire safety.
- Blowout-Proof Stem: The stem is securely retained by a shoulder or step, preventing it from being ejected under pressure if the packing system is compromised, a critical safety feature for high-integrity applications.
- Integrated Anti-Static Device: A spring-loaded mechanism ensures continuous electrical continuity between the ball, stem, and valve body, preventing the dangerous buildup of static electricity caused by fluid flow, which is essential when handling flammable media.
- Trunnion Mounted Ball: The ball is fixed on a trunnion, which absorbs the thrust from line pressure. This design minimizes seat load and operating torque, enhances seat life, and provides reliable sealing even after prolonged periods in a static position.
- Robust Pneumatic Actuator: Available in double-acting or spring-return (fail-safe) configurations. Constructed from aluminum or stainless steel with high-quality seals, it provides reliable, low-maintenance actuation with optional positioners, limit switches, and solenoid valves for complete automation.
- Fire-Safe Design: Typically incorporates secondary metal-sealing seats that provide a seal in case the primary soft seats are damaged by fire, meeting API 607/API 6FA fire test requirements.
- Versatile Material Options: Body and trim materials can be selected from carbon steel (WCB), stainless steel (CF8/CF8M), duplex steel, and other alloys to suit specific service conditions, including corrosive environments and high temperatures.
Benefits to Our Clients:
- Enhanced Safety: The combination of blowout-proof stem and anti-static device significantly mitigates risks of mechanical failure and electrostatic ignition, protecting both personnel and assets.
- Reduced Operational Cost: Lower operating torque translates to smaller, more cost-effective actuators and reduced energy consumption for actuation. Extended seat and seal life lower maintenance frequency and costs.
- High Reliability & Availability: The robust design ensures high performance and long service life, minimizing unplanned downtime in critical processes.
- Global Compliance: Adherence to API 6D makes the valve acceptable for major international projects, simplifying procurement and approval processes for engineers and operators worldwide.
- Operational Flexibility: Pneumatic actuation allows for seamless integration into Distributed Control Systems (DCS) or SCADA systems, enabling precise control and monitoring from remote locations.
Typical Technical Specifications:
| Parameter | Specification / Range |
| Design & Testing Standard | API 6D, API 598 |
| Pressure Rating (ANSI Class) | Class 150, 300, 600, 900, 1500, 2500 |
| Size Range (Nominal Diameter) | 2" to 48" (DN50 to DN1200) |
| End Connection | Flanged (RF, RTJ), Butt-Weld (BW) |
| Temperature Range | -29°C to 200°C (Standard), higher available |
| Seat & Seal Material | PTFE, RPTFE, Nylon, PEEK, Metal Seated |
| Actuator Air Supply | 4-7 bar (Standard), other ranges customizable |
| Fire Safe Certification | API 607/API 6FA (Standard feature) |
Backed by our ISO9001-certified manufacturing processes and an annual export value reflecting consistent global trust, Shanghai Zhibang Valve delivers products that meet rigorous quality benchmarks. Our valves are shipped from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring efficient logistics to our main markets across North and South America, Europe, Asia, Africa, and Oceania. This valve is not merely a component; it is a commitment to safety, durability, and performance. For your next critical pipeline or process application, choose a solution engineered with precision and built for longevity. Contact us today for a detailed quotation or to discuss your specific project requirements.
Frequently Asked Questions (FAQ):
-
Q: What is the primary advantage of a trunnion-mounted ball valve over a floating ball design?
A: The trunnion design anchors the ball at the top and bottom, preventing excessive pressure load on the seats. This results in significantly lower operating torque, better sealing performance at high pressures, and longer seat life, especially in larger sizes. -
Q: Why is an anti-static device important in a ball valve?
A: When hydrocarbon or other non-conductive fluids flow at high velocity, static electricity can generate. The anti-static device provides a continuous conductive path to ground this charge, preventing sparks that could ignite flammable atmospheres, a crucial safety measure. -
Q: Can this valve be operated manually if the pneumatic system fails?
A: Yes, most pneumatic actuators can be fitted with a manual override mechanism (handwheel or lever) as an optional accessory, allowing for manual operation during power or air supply failure. -
Q: What is the meaning of "blowout-proof stem"?
A: It means the valve stem is mechanically designed (e.g., with a shoulder) so that internal pressure cannot forcibly eject it from the valve body, even if the stem packing or retaining components are damaged. This prevents hazardous fluid release. -
Q: Is the fire-safe feature standard or optional?
A: For valves conforming to API 6D, fire-safe design with secondary metal seats is typically a standard feature to meet industry safety expectations. Specific fire test certifications (like API 607) are standard on our API 6D valves. -
Q: What are the available fail-safe modes for the pneumatic actuator?
A: You can choose between double-acting (air to open, air to close) or spring-return actuators. Spring-return provides fail-safe action to either fully open or fully closed position upon air supply loss, depending on configuration. -
Q: Can you provide valves with special coatings or materials for sour service (H2S environments)?
A: Absolutely. We offer material selections and treatments compliant with NACE MR0175/ISO 15156 standards for sour service. This can be specified during the ordering process. -
Q: What is your lead time for a typical order of these valves?
A: Lead time depends on size, pressure rating, material, and quantity. For standard specifications, it generally ranges from 4 to 8 weeks. We provide accurate lead times with every quotation.
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