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Home > Industrial Equipment & Components > Valve > Ball Valve > API 6D Trunnion Ball Valve for Pipeline Isolation, Gearbox Operated, Low Torque Design

API 6D Trunnion Ball Valve for Pipeline Isolation, Gearbox Operated, Low Torque Design

API 6D Trunnion Ball Valve for Pipeline Isolation, Gearbox Operated, Low Torque Design thumbnail-3

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API 6D Trunnion Ball Valve for Pipeline Isolation, Gearbox Operated, Low Torque Design thumbnail-5

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API 6D Trunnion Ball Valve for Pipeline Isolation, Gearbox Operated, Low Torque Design photo-4

API 6D Trunnion Ball Valve for Pipeline Isolation, Gearbox Operated, Low Torque Design photo-5

Product Spotlights

API 6D compliant trunnion ball valve designed for secure pipeline isolation. Features a gearbox operation system for significantly reduced operating torque, enhancing ease of use and reducing wear. Available in wide size (2"-48") and pressure (Class 150-2500) ranges with material options for corrosive or high-temperature services. Offers reliable sealing with metal or soft seats, optional fire-safe design, and is backed by ISO9001 manufacturing quality. Ideal for oil & gas, refinery, and petrochemical applications requiring durable, low-maintenance isolation valves.

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

Key Specifications

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Material:

Other, Carbon Steel / Stainless Steel / Customizable

Application:

Other, Oil & Gas Pipeline

Size Range:

2“ to 48“ (DN50 to DN1200)

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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
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Material Other, Carbon Steel / Stainless Steel / Customizable

Application Other, Oil & Gas Pipeline

Size Range 2“ to 48“ (DN50 to DN1200)

Design Standard API 6D

Operation Method Gearbox Operated (Manual or Electric)

Pressure Rating ASME Class 150 to 2500

End Connection Flanged (RF or RTJ), Welded

Seat Type Metal Seat / Soft Seat (PTFE, PEEK)

Fire Safe Design Optional / Available upon request

Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a dedicated manufacturer specializing in high-performance industrial valves for critical applications worldwide. Our API 6D Trunnion Ball Valve for Pipeline Isolation represents our commitment to engineering excellence, designed specifically for the demanding environments of oil & gas transmission, refineries, and petrochemical plants. With an annual export value reaching US$1.5 million and serving markets across North America, Southeast Asia, Europe, and beyond, we combine rigorous manufacturing standards under ISO9001 with deep industry expertise to deliver valves that ensure reliable, long-term pipeline isolation and safety.

This valve is engineered to address the core challenges in pipeline systems: providing secure isolation under high pressure, minimizing operational torque for easier actuation, and ensuring durability in harsh conditions. The integration of a gearbox operation mechanism transforms high stem torque into manageable input force, making it suitable for large-diameter pipelines where manual or powered operation is required. Our low torque design further reduces wear on seals and bearings, extending service life and lowering maintenance costs.

Key Features & Technical Advantages:

Trunnion-Mounted Ball Design: The ball is fixed on a trunnion (stem) at the top and bottom, preventing ball movement and seat deformation under pressure. This design ensures stable sealing performance even during pressure surges or thermal cycling.
Low Torque Operation: Advanced bearing systems and precision machining reduce frictional resistance during rotation. The gearbox amplifies this advantage, allowing operation with significantly lower input force compared to standard ball valves.
API 6D Compliance: Manufactured strictly according to API 6D standards for pipeline and piping valves, covering design, materials, testing, and marking. This guarantees suitability for upstream, midstream, and downstream hydrocarbon services.
Robust Gearbox Actuation: Available with manual gear (with handwheel) or electric actuator interfaces. The gearbox provides precise positioning, mechanical advantage, and protection against over-torque.
Enhanced Sealing Options: Offers both metal-to-metal seats for high-temperature/fire-safe applications and soft seats (PTFE, reinforced PEEK) for superior tightness in standard services. Seal materials are selected based on client process media.
Wide Pressure & Size Range: Engineered for ASME pressure classes from 150 to 2500, and diameters from 2 inches to 48 inches (DN50 to DN1200), catering to diverse pipeline specifications.
Corrosion & Abrasion Resistance: Key components can be supplied in various materials including carbon steel, stainless steel (304/316), duplex steel, and with optional coatings or treatments to resist corrosive fluids and abrasive particles.

Technical Specifications Table (Typical Configuration):

Parameter	Details / Options
Design Standard	API 6D, with optional compliance to ASME B16.34, NACE MR0175
Pressure Rating	Class 150, 300, 600, 900, 1500, 2500 (Customizable)
Size Range (Nominal)	2", 4", 6", 8", 10", 12", 14", 16", 18", 20", 24", 30", 36", 42", 48"
End Connection	Flanged (RF, RTJ), Butt-Weld Ends, Socket-Weld (for smaller sizes)
Body Material	A216 WCB (Carbon Steel), A351 CF8/CF8M (Stainless Steel), Duplex Steel, Other alloys upon request
Seat & Seal Material	Metal (Stellite, Inconel), Soft (PTFE, PEEK, Enhanced PTFE), Fire-Safe design optional
Operation Type	Gearbox Operated (Manual Handwheel), with interface for Electric/Pneumatic Actuator
Temperature Range	-20°C to +200°C (Soft Seat), up to +450°C (Metal Seat, depending on material)
Testing	Hydrostatic Shell & Seat Test, Low Pressure Seat Test (Air/Water), Optional Fire Test

Benefits to Our Clients:

Operational Efficiency & Safety: The low-torque gear operation reduces the physical effort or actuator power required, enabling quicker and safer valve cycling in emergency or routine isolation scenarios.
Long Service Life & Reduced Maintenance: The trunnion design minimizes seat wear, and the low torque operation decreases mechanical stress on components. This translates to fewer shutdowns for maintenance and replacement.
Leakage Prevention & Environmental Compliance: Tight sealing performance, validated by rigorous API testing, ensures minimal fugitive emissions, helping meet environmental regulations and protecting asset integrity.
System Flexibility & Compatibility: Available in a wide range of sizes, pressures, materials, and end connections, it can be integrated into new or existing pipelines without extensive modification.
Cost-Effectiveness: While offering high-end performance, our valves are produced with optimized manufacturing processes, providing a reliable solution at a competitive value, backed by direct manufacturer support.

Shanghai Zhibang's manufacturing is governed by the ISO9001 quality management system, ensuring consistent product quality from material sourcing to final inspection. Our valves are shipped from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, facilitating smooth logistics to our global clients in over 15 regions including North America, Eastern Europe, Southeast Asia, and Africa. With years of experience and a focus on pipeline isolation solutions, we understand the critical need for reliability. This API 6D Trunnion Ball Valve is not just a component; it's a safeguard for your pipeline infrastructure. We invite you to contact us for detailed technical discussions, custom configuration requests, or to leverage our expertise for your next project.

Frequently Asked Questions (FAQ):

What is the main advantage of a trunnion-mounted ball design over a floating ball design in pipeline valves?
The trunnion-mounted design anchors the ball, preventing it from shifting under high pipeline pressure. This eliminates seat deformation and ensures consistent sealing force, making it more suitable for high-pressure, large-diameter applications where sealing stability is critical.
How does the gearbox operation contribute to "low torque" performance?
The gearbox acts as a torque amplifier. It converts a high rotational torque at the valve stem into a much lower input torque at the handwheel or actuator. This mechanical advantage makes operating large valves easier and reduces the size/power requirement for actuators.
Can this valve be used for fire-safe applications?
Yes, a fire-safe design is available as an option. This typically involves metal secondary seals that maintain a seal even if the primary soft seals are damaged by fire, meeting standards like API 6FA or ISO 10497.
What materials are recommended for valves handling corrosive or sour (H2S) service?
For corrosive or sour service, we recommend body materials like stainless steel (316/316L), duplex/super duplex stainless steel, or appropriate alloy steels. Internal components can be coated or made from corrosion-resistant alloys. NACE MR0175 compliance can be specified.
Is the electric actuator included, or is it an interface-ready gearbox?
Our standard offering is a gearbox-operated valve ready for actuator mounting. The electric, pneumatic, or hydraulic actuator itself is typically supplied separately or can be sourced by us as a package upon request.
What is the typical delivery time for a custom-sized valve (e.g., 36" Class 600)?
Delivery time depends on material availability and configuration complexity. For standard materials, typical lead time for large custom valves ranges from 8 to 12 weeks. We provide precise timelines upon order confirmation.
Does the valve come with any documentation or certification?
Each valve is supplied with a manufacturer's data sheet, material certificates, and test reports (hydrostatic shell/seat test). Certificates of conformance to API 6D and other specified standards are provided.
How does Shanghai Zhibang ensure quality control for such critical valves?
Our ISO9001-certified process involves strict control at every stage: material inspection, machining precision checks, assembly verification, and multiple pressure tests (shell, seat, low-pressure). Final inspection includes dimensional checks and operational torque measurement.