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Home > Industrial Equipment & Components > Valve > Ball Valve > Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250

Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250

Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250 thumbnail-3

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Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250 photo-1

Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250 photo-2

Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250 photo-3

Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250 photo-4

Marine Pipeline Trunnion Ball Valve for Offshore Platform Firewater Systems, DN250 photo-5

Product Spotlights

DN250 trunnion ball valve engineered for offshore firewater systems. Features fire-safe API-compliant design, blow-out proof stem, and anti-static device for safety. Robust construction with seawater-resistant materials/coatings ensures reliability in harsh marine environments. Offers low torque operation and Double Block & Bleed capability for easy maintenance and system integrity.

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

Key Specifications

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Application:

Other, Marine Offshore Platform Firewater Systems

Valve Type:

Trunnion Mounted Ball Valve

Nominal Diameter (DN):

250

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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
Company Profile
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Application Other, Marine Offshore Platform Firewater Systems

Valve Type Trunnion Mounted Ball Valve

Nominal Diameter (DN) 250

Body Material Carbon Steel or Stainless Steel (customizable)

Pressure Rating PN16 to PN40 (or Class 150 to Class 300)

End Connection Flanged (RF or RTJ)

Operation Manual Gear, Pneumatic, or Electric Actuator

Fire Safe Design API 607 / API 6FA compliant

Seat Material PTFE, Reinforced PTFE, Metal Seated (optional)

Temperature Range Standard: -29°C to +200°C

As a specialized manufacturer of industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is proud to present our high-performance DN250 Marine Pipeline Trunnion Ball Valve. Engineered specifically for the demanding environments of offshore platform firewater systems, this valve is built to deliver reliable isolation and control under extreme conditions. With an annual export value demonstrating our global reach, we understand the critical need for safety and durability in marine applications. This trunnion ball valve represents our commitment to providing robust solutions that protect vital infrastructure and personnel.

The design and construction of this valve address the unique challenges faced in offshore fire protection systems, where failure is not an option. Its core value lies in providing a secure, leak-tight shut-off for firewater lines, ensuring that the system remains pressurized and ready for immediate deployment. The trunnion-mounted design is key to handling high pressures and pipeline stresses commonly encountered in marine piping networks, making it a cornerstone component for safety-critical systems on platforms, FPSOs, and drilling rigs.

Key Features and Technical Advantages:

Trunnion-Mounted Ball Design: The ball is fixed on a trunnion shaft, which minimizes operating torque and prevents excessive seat wear. This design is particularly advantageous for larger sizes like DN250 and high-pressure applications, ensuring smooth operation and long service life even with infrequent cycling.
Fire-Safe Construction: Engineered to meet stringent fire safety standards (e.g., API 607/6FA principles). In the event of a fire, the primary soft seals may degrade, but secondary metal-to-metal sealing surfaces engage to maintain a seal and prevent catastrophic system failure, a non-negotiable requirement for firewater systems.
Blow-Out Proof Stem: The stem is designed with a step that prevents it from being ejected under internal pressure if the packing is compromised, enhancing operational safety for personnel and the environment.
Anti-Static Device: Incorporates springs that ensure continuous electrical contact between the ball, stem, and valve body, preventing the buildup of static electricity which could be a hazard in flammable atmospheres.
Double Block and Bleed (DBB) Capability: When in the closed position, the valve provides a tight seal on both sides of the ball. A body bleed port allows for pressure verification and safe maintenance of the downstream section, a critical feature for system isolation and testing.
Robust Body and Trim Materials: Typically constructed from ASTM A216 WCB carbon steel or A351 CF8/CF8M stainless steel for superior corrosion resistance in marine atmospheres. Trim materials can be specified to match specific service conditions, including seawater compatibility.
Seawater & Coatings Compatibility: Special attention is given to material selection and protective coatings (like epoxy or specialized paints) to resist corrosion from saltwater spray, high humidity, and other offshore environmental factors.

Technical Specifications (Standard Configuration):

Parameter	Specification
Size (Nominal Diameter)	DN250 / NPS 10
Pressure Rating	PN16, PN25, PN40 (or ANSI Class 150, 300)
End Connection Standard	Flanged per EN 1092-1 / ASME B16.5
Face-to-Face Dimension	Complies with API 6D / ISO 17292
Test Standards	Shell & Seat Test per API 598 / ISO 5208
Operation	Manual (Gear Operated), Pneumatic, Electric Actuator

Benefits for Your Offshore Project:

Enhanced System Reliability: Reduces the risk of unplanned downtime in critical firewater systems, contributing to overall platform safety certification and operational integrity.
Reduced Lifecycle Costs: The durable trunnion design and corrosion-resistant materials minimize maintenance requirements and extend valve service intervals, lowering total cost of ownership.
Simplified Integration & Compliance: Standard dimensions and pressure ratings facilitate easy integration into existing or new piping systems, helping projects meet international marine and safety codes.
Operational Safety: Features like blow-out proof stems, anti-static devices, and fire-safe design directly contribute to a safer working environment on the offshore installation.

Backed by our ISO9001 certified manufacturing processes, Shanghai Zhibang ensures consistent quality and traceability for every DN250 Marine Trunnion Ball Valve we produce. Our products reach diverse global markets, from North America and Western Europe to Southeast Asia and the Middle East, supported by flexible shipment options from major Chinese ports. This valve is more than just a component; it is an integral part of your offshore safety strategy. We invite you to contact us to discuss your specific project requirements, request detailed material specifications, or explore customization options for actuation and coatings. Partner with us for a reliable, code-compliant valve solution for your most critical marine applications.

Frequently Asked Questions (FAQ):

Q: Why is a trunnion-mounted design preferred over a floating ball for DN250 firewater service?
A: For larger sizes and higher pressures, a trunnion design significantly reduces operating torque, protects the seats from excessive wear, and provides more stable sealing performance, which is crucial for reliable, long-term operation in a safety-critical system.
Q: What specific certifications or fire test reports are available for this valve?
A> The valve is designed and manufactured to meet the requirements of fire-safe standards like API 607 and API 6FA. Specific test certificates from recognized laboratories can be provided upon request, subject to project specifications.
Q: Can this valve be supplied with actuators for remote operation?
A: Yes. We can provide the valve as a complete package with pneumatic (double-acting or spring-return), electric, or hydraulic actuators. The choice depends on your available power source and fail-safe requirements.
Q: What materials are recommended for the valve body and internals in seawater service?
A: For seawater in firewater systems, common material choices include ASTM A216 WCB carbon steel with suitable internal/external epoxy coatings, or ASTM A351 CF8M (316 stainless steel) for superior corrosion resistance. Trim materials like 316 SS or Monel are also options.
Q: What is the typical delivery lead time for a DN250 valve with special coatings?
A: Lead times vary based on order quantity and specific customization. Standard configured valves may have a shorter lead time, while those requiring special coatings, materials, or third-party inspection may require additional weeks. We provide accurate timelines upon receipt of your detailed inquiry.
Q: How do you ensure the valve's performance in the harsh offshore environment?
A> Our quality control includes rigorous pressure testing, material verification, and inspection of critical features. For offshore use, we pay special attention to coating integrity, seal material selection, and assembly cleanliness to ensure durability against salt, humidity, and UV exposure.
Q: Is the face-to-face dimension compliant with international standards for easy replacement?
A: Yes. Our DN250 trunnion ball valve is manufactured to standard face-to-face dimensions as per API 6D and ISO 17292, ensuring it can directly replace other standard valves in the pipeline without requiring pipe modification.
Q: Do you offer technical support for valve selection and sizing?
A: Absolutely. Our engineering team can assist with valve selection based on your specific service conditions (pressure, temperature, media), actuation requirements, and compliance needs for your offshore project.