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Home > Industrial Equipment & Components > Valve > Ball Valve > API 6D Trunnion Ball Valve for Water Distribution Networks, Epoxy Coated for Corrosion Protection

API 6D Trunnion Ball Valve for Water Distribution Networks, Epoxy Coated for Corrosion Protection

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Product Spotlights

API 6D trunnion ball valve designed for high-pressure water mains. Features fusion-bonded epoxy coating for superior external corrosion resistance. Trunnion-mounted design ensures low operating torque, extended seat life, and reliable bidirectional sealing. Offers optional fire-safe construction and in-line maintenance capability. Ideal for ensuring long-term reliability and low lifecycle cost in municipal and industrial water distribution networks.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Application:

Other, Water Distribution Networks

Valve Type:

Trunnion Mounted Ball Valve

Design Standard:

API 6D

Contact Supplier Request Quote Chat Now

Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Application Other, Water Distribution Networks

Valve Type Trunnion Mounted Ball Valve

Design Standard API 6D

Body Material Carbon Steel with Epoxy Coating

Seat Material Enhanced Polymer / Metal

End Connection Flanged Ends

Pressure Rating Class 150, Class 300, Class 600

Operation Type Manual Lever, Gear Operator, Actuated

Corrosion Protection External Epoxy Coating, Internal Optional Lining

As a specialized manufacturer with a foundation built in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance API 6D Trunnion Ball Valve, engineered specifically for the demanding environments of modern water distribution networks. Our extensive experience, backed by ISO9001 quality management systems, is channeled into producing valves that offer not just flow control, but long-term reliability and asset protection. This valve is a cornerstone solution for pipeline engineers and project managers seeking to minimize lifecycle costs and maximize operational uptime in municipal and industrial water systems.

This valve is designed to meet the rigorous requirements of API 6D, a standard dedicated to pipeline valves, ensuring superior performance in high-pressure, high-volume water transmission. The trunnion-mounted design is a key differentiator, providing stable, low-torque operation and exceptional sealing integrity even under fluctuating pressures, making it ideal for mainline isolation and critical section control.

Core Features & Technical Advantages:

Robust Trunnion Design: The ball is supported by trunnions at the top and bottom, significantly reducing operating torque and seat load. This design prevents excessive wear on the seats, extends service life, and allows for easier operation, especially in larger sizes or higher pressure classes.
Superior Corrosion Protection: An external fusion-bonded epoxy (FBE) coating provides a robust, chemically resistant barrier against soil corrosion, moisture, and harsh environmental conditions commonly encountered in buried or exposed pipeline applications.
Fire-Safe Design (Optional): Available with fire-safe features per API 607/API 6FA standards, where secondary metal-to-metal seals engage to maintain isolation in the event of a fire, protecting downstream assets.
Bidirectional Sealing: The valve provides reliable sealing in both flow directions, offering flexibility in pipeline design and installation without concern for orientation.
Low Maintenance & Easy Servicing: Many models feature a double block and bleed (DBB) capability and are designed for in-line maintenance. Seat and seal replacement can often be performed with the valve body remaining in the pipeline, drastically reducing downtime and maintenance costs.
Versatile Actuation Options: To suit various levels of automation, the valve can be fitted with manual levers, gear operators, or automated actuators (electric, pneumatic, or hydraulic).

Detailed Technical Specifications:

Parameter	Specification / Option
Design & Testing Standard	API 6D, API 598
Pressure Class (Common)	ASME Class 150, Class 300, Class 600
Size Range	2" (DN50) to 48" (DN1200) and larger
Body & Bonnet Material	Carbon Steel (WCB), Ductile Iron, Stainless Steel (optional)
Ball Material	Carbon Steel with Chrome Plating or Stainless Steel
Seat Material	Reinforced PTFE (RPTFE), Nylon, PEEK, or Metal (for fire-safe)
End Connection	RF (Raised Face) Flanges per ASME B16.5 / B16.47
Temperature Range	-29°C to 150°C (-20°F to 302°F) standard; extended ranges available
External Coating	Fusion Bonded Epoxy (FBE), thickness customizable

Benefits for Your Water Distribution Project:

Extended Asset Life: The combination of API 6D construction and epoxy coating directly combats corrosion, the primary cause of pipeline valve failure, leading to a longer service life and higher return on investment.
Reduced Total Cost of Ownership: Lower operating torque reduces actuator size and cost. In-line maintenance capability slashes service expenses. High reliability minimizes unplanned shutdowns and associated costs.
Enhanced System Safety & Integrity: The robust design ensures safe containment of pipeline pressure. Fire-safe options add an extra layer of protection for critical infrastructure.
Global Compliance & Acceptance: Manufactured under ISO9001, our valves are trusted in diverse markets worldwide, from North America and Europe to Southeast Asia and the Middle East, ensuring they meet international project specifications.

With an annual export value reflecting our global reach and a presence in markets across six continents, Shanghai Zhibang has proven its capability to deliver reliable valve solutions. Our products ship from major ports like Shanghai, Guangzhou, and Hong Kong, ensuring efficient logistics. Choosing our API 6D Trunnion Ball Valve means selecting a product born from rigorous manufacturing controls, designed for durability, and proven in water distribution networks worldwide. It is an investment in predictable performance and peace of mind. Contact us today to discuss your project specifications and experience the Zhibang difference in quality and service.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of a trunnion-mounted ball valve over a floating ball valve for water distribution?
A: The trunnion design supports the ball's weight and handles pipeline thrust, drastically reducing operating torque and seat wear. This is crucial for larger diameter, higher-pressure mainline valves, ensuring easier operation and longer service life.
Q: Is the epoxy coating sufficient for buried service, or do I need additional cathodic protection?
A: The fusion-bonded epoxy coating provides excellent primary corrosion protection. For long-term buried service in highly corrosive soils, it is often used in conjunction with a cathodic protection system as part of a comprehensive corrosion management strategy. The coating is dielectric and compatible with such systems.
Q: Can this valve be used for potable water applications?
A: Yes. When specified, we can provide valves with internals and seat materials that comply with relevant potable water standards (e.g., NSF/ANSI 61, WRAS). The standard epoxy coating is for external protection only.
Q: What is the typical delivery lead time for a custom-sized valve?
A: Lead times vary based on size, pressure class, and material specifications. Standard class/size combinations may have shorter lead times, while fully customized valves require engineering and manufacturing time. Specific schedules are provided upon request with your detailed requirements.
Q: Do you offer actuation packages, and can they be fitted at your factory?
A: Yes, we offer a range of manual, electric, and pneumatic actuators from reputable brands. We provide skilful mounting, setting, and testing at our factory as a value-added service, delivering a ready-to-install, automated valve package.
Q: How does the "Double Block and Bleed" (DBB) function work with this valve?
A: In the closed position, the trunnion design and dual-seat arrangement allow the valve to block pressure from both sides. A bleeder port on the valve body, typically between the seats, can be opened to vent/check the cavity pressure, providing a safe isolation point.
Q: Are spare parts like seats and seals readily available?
A: Absolutely. We maintain an inventory of common spare parts and can provide comprehensive maintenance kits. Detailed parts lists and diagrams are supplied with each valve to facilitate easy reordering and servicing.
Q: What documentation accompanies the valve shipment?
A: Each valve shipment includes essential documentation such as a Material Test Report (MTR), Certificate of Compliance, pressure test report, detailed dimensional drawing, and a manual. Additional certificates are available upon request.