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Home > Industrial Equipment & Components > Valve > Ball Valve > DNV LR Approved Ball Valve for Critical Fire Protection in Ship Engine Rooms

DNV LR Approved Ball Valve for Critical Fire Protection in Ship Engine Rooms

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Product Spotlights

Dual DNV & LR certified ball valve specifically designed for critical fire protection systems in ship engine rooms. Features fire-safe construction with secondary sealing for emergency isolation, robust carbon steel or stainless steel materials, full port design for maximum flow, and flanged connections. Ensures regulatory compliance, enhances vessel safety, and is backed by manufacturer's ISO9001 quality system and global export experience.

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

Key Specifications

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Material:

Other, Carbon Steel or Stainless Steel

Application:

Other, Fire Protection Systems in Ship Engine Rooms

Size Range:

DN15 to DN300 (0.5“ to 12“)

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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 or Stainless Steel

Application Other, Fire Protection Systems in Ship Engine Rooms

Size Range DN15 to DN300 (0.5“ to 12“)

Configuration Full Port, Flanged Ends

Pressure Rating PN16/ANSI Class 150

Fire Protection Standard DNV & LR Approved for Critical Systems

Operation Manual Handle or Gearbox (Optional)

Sealing Fire-safe Design with Graphite Packing

Connection Standard ISO, ANSI Flanges

Optional Features Lockable Handle, Extended Stem

As a specialized manufacturer with a focus on marine safety, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our DNV & LR Approved Ball Valve, engineered specifically for critical fire protection applications in ship engine rooms. Since our establishment in 2016, we have dedicated our expertise to producing valves that meet the stringent demands of global maritime safety standards. This valve is a cornerstone of our product line, designed to provide reliable, fail-safe operation in the most hazardous environments onboard vessels. Our commitment to quality, backed by our ISO9001 certification, ensures that every valve delivers the performance and durability required to protect lives and assets.

The engine room is the heart of a ship, and its fire protection system is paramount. Our approved ball valve is not just a component; it is a critical safety device. Its design and certification directly address the unique challenges of marine firefighting systems.

DNV & LR Dual Approval: The valve is certified by both DNV (Det Norske Veritas) and LR (Lloyd's Register), two of the world's leading marine classification societies. This dual approval signifies compliance with the highest international standards for materials, design, fire performance, and testing protocols specific to shipboard fire protection systems.
Fire-Safe Construction: Beyond standard ball valve design, it incorporates a fire-safe feature. In the event of a fire, the primary sealing may be compromised, but a secondary sealing mechanism (typically utilizing graphite packing) activates to maintain a seal and prevent leakage, crucial for isolating flammable fluid lines.
Robust Material Selection: The valve body, ball, and stem are constructed from high-grade carbon steel or stainless steel, chosen for their strength, corrosion resistance, and suitability for marine environments. Materials are selected to ensure integrity under fire conditions.
Full Port Design: Offers minimal flow resistance, which is essential for fire protection systems where maximizing water or foam delivery rate is critical during an emergency.
Designed for Critical Isolation: Its primary function is to quickly and reliably isolate sections of the fire main, fuel lines, or other critical systems in the engine room during a fire incident, helping to contain the hazard.
Easy & Reliable Operation: Features a robust manual handle or an optional gearbox for easier operation in high-pressure applications. The design ensures the valve can be operated quickly and effectively by crew members, even in stressful emergency situations.
Marine Environment Compatibility: The design considers factors like vibration, thermal cycling, and potential exposure to saltwater spray, ensuring long-term reliability in the harsh engine room environment.

To provide a clear overview of the technical specifications, here are some key parameters:

Parameter	Typical Specification	Notes
Size Range	DN15 (0.5") to DN300 (12")	Standard ISO/DIN nominal diameters
Pressure Rating	PN16 / ANSI Class 150	Common rating for marine fire systems
End Connection	Flanged (ISO, ANSI standards)	Ensures secure integration into piping
Body Material	WCB Carbon Steel or CF8M Stainless Steel	Material certification is part of approval
Fire Test Standard	Complies with DNV & LR fire test requirements	Includes external burn and internal leakage tests
Operation Temperature	-20°C to +150°C (ambient & fluid)	Suitable for a wide range of conditions

The advantages of choosing our DNV LR Approved Ball Valve extend beyond mere compliance. For shipbuilders, repair yards, and vessel operators, it translates into tangible benefits:

Ensures Regulatory Compliance: Using approved components simplifies the vessel classification and certification process, avoiding delays and costly retrofits.
Enhanced Safety & Risk Mitigation: Provides a verified level of performance in a fire scenario, directly contributing to the safety of the crew and the vessel.
System Reliability: High-quality manufacturing and rigorous testing result in a valve with reliable long-term performance, reducing maintenance issues and unexpected failures.
Global Market Acceptance: With DNV and LR approvals, the valve is accepted in major maritime markets worldwide, facilitating international trade and vessel operations.
Supply Chain Confidence: As an ISO9001-certified manufacturer with an annual export value between US$1 Million and US$1.5 Million, we provide a stable and reliable supply source. Our main markets span across North America, South America, Europe, Asia, Africa, and Oceania, demonstrating our global reach and experience in meeting diverse client requirements.

Our operational strength supports your project. We ship from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring flexible and efficient logistics to your location, whether for a new build or a retrofit project.

In conclusion, this DNV LR Approved Ball Valve represents a fusion of rigorous certification, robust engineering, and practical marine application knowledge. It is a product born from our dedication to maritime safety and manufacturing excellence. Choosing our valve means investing in a component that has been validated by independent authorities, manufactured under a certified quality system, and supplied by a company with proven international export capability. For your next shipbuilding or maintenance project requiring critical fire protection valves, contact us to discuss your specifications and ensure your engine room safety systems are equipped with reliable, approved hardware.

Frequently Asked Questions (FAQ)

Q: What does "DNV & LR Approved" specifically mean for this ball valve?
A: It means the valve's design, materials, manufacturing process, and performance (especially under fire conditions) have been tested and verified by DNV and Lloyd's Register. It complies with their specific rules for fire protection valves used on classified ships, ensuring it meets mandatory safety standards.
Q: Is this valve only for new ship construction, or can it be used for retrofitting existing vessels?
A: It is suitable for both applications. For new builds, it ensures compliance from the start. For retrofits or repairs, it allows owners to upgrade their fire protection system with approved components to maintain or regain class certification.
Q: Are the fire-safe features tested? How do they work?
A: Yes, the fire-safe performance is a key part of the approval tests. Typically, after exposure to high temperatures that destroy the primary soft seals, a secondary seal (often made of graphite or other fire-resistant material) expands or maintains contact to prevent significant leakage, allowing the valve to isolate the line.
Q: What materials are available, and how do I choose?
A: Common body materials are carbon steel (WCB) for general applications and stainless steel (CF8M/316) for more corrosive environments. The choice depends on the fluid media and specific environmental conditions in the engine room. Both materials are available with the necessary certifications.
Q: Can I get valves with different end connections, like threaded ends?
A: The standard design for these critical applications is flanged ends to ensure a robust, leak-free connection in high-pressure fire mains. Threaded ends are generally not recommended for such systems. However, flange standards (ISO, ANSI) can be specified according to your piping design.
Q: What is the typical delivery time for these approved valves?
A: Delivery time depends on the size, material, and quantity. As a manufacturer, we maintain production planning for standard sizes. Please contact us with your specific requirements for an accurate timeline. Our multiple shipment ports help optimize delivery.
Q: Does the approval cover all size ranges you offer?
A: The approval is typically granted for a defined design and material range covering multiple sizes. Each size within the offered range (DN15 to DN300) is produced following the same approved design and quality procedures, making them suitable for approved use.
Q: What documentation is provided with the valves?
A: We provide a comprehensive package including the product certificate stating DNV/LR approval (as applicable), material certificates, test reports (for pressure and fire tests if performed), and our ISO9001 quality system documentation. This supports your paperwork for class surveys.