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Home > Industrial Equipment & Components > Valve > Ball Valve > Full Port Trunnion Ball Valve for Marine Pipelines, DN250 Bore, Carbon Steel Body

Full Port Trunnion Ball Valve for Marine Pipelines, DN250 Bore, Carbon Steel Body

Full Port Trunnion Ball Valve for Marine Pipelines, DN250 Bore, Carbon Steel Body thumbnail-3

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Full Port Trunnion Ball Valve for Marine Pipelines, DN250 Bore, Carbon Steel Body photo-4

Full Port Trunnion Ball Valve for Marine Pipelines, DN250 Bore, Carbon Steel Body photo-5

Product Spotlights

Engineered for marine harshness: DN250 Full Port Trunnion Ball Valve ensures maximum flow with minimal pressure drop. Carbon steel body offers robust strength, while the trunnion design guarantees low torque operation and long-term sealing reliability under high pressure. Ideal for critical shipboard and offshore pipeline systems, featuring fire-safe options and global standard compliance for trusted performance.

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

Key Specifications

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Application:

Other, Marine Pipeline Systems

Valve Type:

Full Port Trunnion Mounted Ball Valve

Body Material:

Carbon Steel (A216 WCB)

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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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Application Other, Marine Pipeline Systems

Valve Type Full Port Trunnion Mounted Ball Valve

Body Material Carbon Steel (A216 WCB)

Port Size DN250 (10“) Full Bore

End Connection Flanged (RF/RTJ)

Pressure Rating Class 150/300, ANSI

Seat Material PTFE/Enhanced PTFE/Metal

Operation Manual Gearbox/Electric Actuator/Pneumatic Actuator

Design Standard API 6D, ASME B16.34

Fire Safe Design API 607/API 6FA Compliant (Optional)

As a professional valve manufacturer with extensive experience in serving the global marine industry, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance Full Port Trunnion Ball Valve designed specifically for demanding marine pipeline applications. Engineered for reliability and durability in harsh offshore and onboard environments, this DN250 bore valve with a robust carbon steel body is built to withstand the challenges of seawater, corrosive atmospheres, and high-pressure fluid transfer. Our commitment to quality, backed by ISO9001 certification, ensures that every valve delivers exceptional performance for critical shipboard systems, offshore platforms, and port terminal operations.

This valve is engineered to provide superior flow control with minimal pressure drop, thanks to its full port design. The trunnion-mounted ball construction offers enhanced stability and reduced operating torque, making it ideal for large-diameter pipelines where reliable sealing and ease of operation are paramount. We understand the critical nature of marine operations, where failure is not an option. Therefore, our valves are subjected to rigorous testing to meet international standards, providing peace of mind for engineers and operators worldwide.

Key Features & Technical Advantages:

Superior Structural Integrity: The trunnion-mounted ball is supported at the top and bottom, preventing seat load from being transferred to the ball under high pressure. This design significantly reduces operating torque and extends the service life of the valve seats and seals.
Full Port (Full Bore) Design: Provides a flow passage diameter equal to the pipeline's inner diameter (DN250), minimizing flow restriction, pressure drop, and turbulence. This is crucial for efficient pumping and for applications requiring pigging or scraping.
Robust Carbon Steel Construction: The body, made from ASTM A216 WCB carbon steel, offers excellent mechanical strength and impact resistance. It is suitable for a wide range of media including seawater, oil, gas, and various process fluids handled in marine environments.
Advanced Sealing Technology: Utilizes a combination of primary (PTFE/Enhanced PTFE) and secondary (metal-to-metal) sealing seats. The spring-loaded seat design ensures continuous sealing force compensation, maintaining a bubble-tight seal even as the seat material wears or under pressure fluctuations.
Fire-Safe Capability: Available with fire-safe design per API 607/6FA standards. In the event of a fire, the metal secondary seat engages to provide a critical seal, preventing catastrophic fluid release.
Versatile Actuation Options: Can be equipped with manual gear operators for direct control, or automated with electric or pneumatic actuators for remote operation and integration into ship control systems.
Anti-Static & Blowout-Proof Stem: The stem is designed to prevent static electricity buildup and is securely retained to avoid ejection under pressure, ensuring operational safety.

Detailed Technical Specifications:

Parameter	Specification
Valve Size & Design	DN250 (10"), Full Port, Trunnion Mounted Ball
Pressure Rating	Class 150, Class 300 (ANSI)
Body Material	Carbon Steel (A216 WCB), Other grades available
Ball Material	Carbon Steel with Chrome Plating or Stainless Steel
Seat Material	PTFE, Reinforced PTFE (RPTFE), PEEK, Metal
Stem Material	Stainless Steel (A182 F6/F304/F316)
End Connection	Flanged, RF or RTJ face, ASME B16.5
Temperature Range	-29°C to +200°C (with standard seats), higher available
Operation	Manual Lever, Gear Box, Electric/Pneumatic Actuator
Design & Test Standards	API 6D, ASME B16.34, API 598

Benefits for Your Marine Operations:

Enhanced System Efficiency: The full bore design reduces pumping energy costs by minimizing pressure loss across the valve.
Reduced Maintenance & Lifetime Cost: The robust trunnion design and high-quality materials lead to longer service intervals and lower total cost of ownership.
High Reliability & Safety: Critical for marine applications where valve failure can lead to environmental incidents, operational downtime, and safety hazards. The fire-safe and blowout-proof features add extra layers of protection.
Global Compliance: Manufactured to widely recognized international standards (API, ASME), facilitating its use in global projects and acceptance by classification societies.
Flexibility: Available in various material grades, seat materials, and actuation packages to match specific service conditions, whether for ballast, bilge, fuel, cargo, or cooling water systems.

With a proven track record of exporting to diverse and demanding markets across North America, South America, Europe, Asia, Africa, and Oceania, Shanghai Zhibang has built a reputation for delivering reliable fluid control solutions. Our annual export value reflects the trust placed in us by international clients. Supported by strategic shipping ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and efficient delivery of your orders. Choosing our DN250 Full Port Trunnion Ball Valve means selecting a component engineered for performance, backed by a manufacturer dedicated to quality and customer support. Contact us today to discuss your specific marine pipeline requirements and receive a competitive quotation.

Frequently Asked Questions (FAQ)

Q: Why is a trunnion-mounted design preferred over a floating ball design for large-size marine valves?
A: For large diameters like DN250, operating pressures can create significant forces on the ball. The trunnion design anchors the ball, preventing seat distortion and drastically reducing operating torque compared to a floating ball design, which is better suited for smaller sizes.
Q: What are the main advantages of a full port (full bore) valve for marine pipelines?
A: Full port valves eliminate flow restriction, which is vital for maintaining pump efficiency, reducing erosion, and allowing for in-line pigging or inspection tools to pass through the valve without obstruction, a common requirement in pipeline maintenance.
Q: Is this carbon steel valve suitable for handling seawater directly?
A: Standard carbon steel (WCB) has limited corrosion resistance to seawater. For direct seawater service, we recommend valves with special internal coatings (epoxy, Ni-Al bronze) or constructed from superior materials like duplex stainless steel, which we can provide as an option.
Q: Can this valve be automated for remote operation on an unmanned platform or integrated into a ship's control system?
A: Absolutely. The valve is designed to be easily fitted with electric or pneumatic actuators. We can supply a complete actuated package with the necessary controls, limit switches, and positioners for seamless integration.
Q: What certifications do your valves carry for marine use?
A: Our manufacturing facility is ISO9001 certified. The valves are designed and tested per API 6D and ASME standards. Specific certifications from classification societies like ABS, DNV, LR, or BV can be arranged upon request and are subject to additional testing and documentation.
Q: What is the typical delivery lead time for a DN250 valve with specific requirements?
A: Lead time depends on configuration complexity and order quantity. Standard configurations may be available from stock or have a shorter lead time (e.g., 4-6 weeks). Customized orders (special materials, actuators, certifications) typically require 8-12 weeks. We provide accurate timelines upon order confirmation.
Q: Do you offer any warranty or after-sales support?
A: Yes, we provide a standard warranty against manufacturing defects. Our technical team offers after-sales support for installation guidance, troubleshooting, and spare parts supply to ensure long-term, trouble-free operation.
Q: Are spare parts like seats and seals readily available?
A: Yes, we maintain an inventory of critical spare parts for our valves. We recommend purchasing a seal kit with your valve order for future maintenance needs, ensuring part compatibility and availability.