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Home > Industrial Equipment & Components > Valve > Other Valves & Parts > DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms thumbnail-3

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms thumbnail-4

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms thumbnail-5

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms photo-1

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms photo-2

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms photo-3

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms photo-4

DN500 Triple Eccentric Marine Butterfly Valve With Fire-safe Design for Offshore Platforms photo-5

Product Spotlights

DN500 large-diameter triple eccentric butterfly valve designed for offshore platforms. Features a fire-safe design with secondary metal seal for emergency containment. Triple eccentric geometry ensures bubble-tight seal, low operating torque, and long service life. Constructed with marine-grade materials for corrosion resistance. Compatible with manual, pneumatic, or electric actuation. Manufactured under ISO9001 by an exporter with global reach.

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

Key Specifications

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Nominal Diameter:

DN500

Design Type:

Triple eccentric butterfly valve

Application:

Marine and offshore platforms

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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Nominal Diameter DN500

Design Type Triple eccentric butterfly valve

Application Marine and offshore platforms

Special Feature Fire-safe design

Material Carbon steel, stainless steel (customizable)

Sealing Material PTFE, metal seal (available)

Connection Type Flanged

Operation Manual gearbox, pneumatic, electric actuator (optional)

Standards ISO9001 quality management system

Pressure Rating PN10, PN16, ANSI Class 150 (customizable)

As a dedicated manufacturer specializing in high-performance industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our DN500 Triple Ecentric Marine Butterfly Valve with Fire-Safe Design. Engineered specifically for the demanding environments of offshore platforms, this valve represents our commitment to providing reliable, safe, and durable flow control solutions for critical marine applications. Our expertise, backed by the ISO9001 quality management system, ensures that each valve meets stringent performance standards, offering operators a dependable component for their piping systems where safety and zero leakage are paramount.

The core value of this valve lies in its unique triple eccentric design combined with a certified fire-safe capability. This combination addresses two major challenges in offshore operations: achieving a bubble-tight seal under normal conditions and maintaining a secondary seal in the event of a fire, preventing catastrophic fluid release. Designed for a nominal diameter of DN500, it is suitable for large-diameter pipelines handling seawater, hydrocarbons, chemicals, or other media on platforms, ships, and marine terminals.

Key Product Features and Technical Advantages:

Triple Ecentric Geometry: This advanced design features three distinct offsets (axis of disc from seat, conical seat surface, and eccentric shaft). The primary benefit is that the disc only contacts the seat at the final moment of closure, minimizing wear and friction. This results in:
- Extended service life and reduced maintenance.
- Lower operating torque, allowing for smaller, more economical actuators.
- A true bubble-tight seal, essential for preventing leakage in sensitive environments.
Fire-Safe Design Certification: The valve is constructed to meet recognized fire-safe standards (designs available upon request). In a fire scenario, the primary soft seal may degrade, but a secondary metal-to-metal seal engages to maintain a critical level of containment, minimizing the risk of fueling a fire.

Robust Construction for Marine Use: Materials are selected for corrosion resistance in saline, humid, and potentially corrosive offshore atmospheres. Common options include:

Component	Typical Material Options
Body	Carbon Steel WCB, Stainless Steel 316/304
Disc	Stainless Steel 316, with possible coatings
Primary Seal (Seat)	PTFE, Reinforced PTFE, Other elastomers
Secondary Fire Seal	Metal seat (integrated with disc/body design)
Stem	Stainless Steel 316

Versatile Actuation Options: The low torque requirement makes it compatible with various actuators to suit different platform control systems:
- Manual Gearbox: For local, hand-operated control.
- Pneumatic Actuator: For integration with pneumatic control systems.
- Electric Actuator: For automated control and remote operation via SCADA.
- Actuators can be supplied as an optional package.
Flanged Connection: Standard design includes flanged ends (RF or FF) compatible with DN500 pipeline flanges, facilitating easy installation and replacement.
Pressure and Temperature Ratings: Typical pressure ratings include PN10, PN16, or ANSI Class 150. Temperature range depends on seal material; with PTFE seats, it can handle from cryogenic temperatures up to approximately 200°C. The fire-safe design is validated for high-temperature emergency conditions.

Benefits for Offshore Platform Operators:

Enhanced Safety: The fire-safe feature provides a critical safety layer, helping platforms comply with safety regulations and protect assets and personnel.
Reliable Performance: The triple eccentric design ensures long-term sealing integrity, reducing unplanned shutdowns due to valve failure.
Cost Efficiency: Lower torque reduces actuator costs and energy consumption for actuated valves. Long service life lowers total lifecycle cost.
Corrosion Resistance: Material selections combat the harsh marine environment, ensuring durability.
Operational Flexibility: Multiple actuation options allow integration into existing or new control philosophies.

Trust and Proven Capability:

Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, has rapidly grown into a trusted supplier with an annual export value ranging between US$1 Million and US$1.5 Million. Our products, manufactured under the ISO9001 quality management system, reach diverse global markets including North America, South America, Europe, Asia, Africa, and Oceania, demonstrating widespread acceptance of our quality and reliability. We ship efficiently from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, ensuring timely delivery to your project site. Choosing our DN500 Triple Ecentric Marine Butterfly Valve means selecting a product backed by a manufacturer with proven international reach, a commitment to quality, and a deep understanding of the specific needs of the offshore industry. This valve is not just a component; it is a safeguard for your operations.

Frequently Asked Questions (FAQ):

What exactly does "triple eccentric" mean in a butterfly valve?
Triple eccentric refers to a geometric design where the rotational axis of the disc is offset three times from the sealing seat's centerline and plane. This creates a cam-like action where the disc only contacts the seat at the final point of closure, drastically reducing wear and enabling a very tight seal.
How does the fire-safe design work?
The valve incorporates a primary soft seal (like PTFE) for normal bubble-tight sealing. In a fire, this seal may melt or degrade. A secondary metal seat, usually part of the disc or body, then engages to create a metal-to-metal seal, providing a continued, albeit not bubble-tight, level of containment to prevent uncontrolled fluid release.
Is this valve suitable for seawater service?
Yes, with appropriate material selection. We typically recommend stainless steel (e.g., 316) for the body, disc, and stem to resist chloride corrosion. The seat material should also be compatible; specific options can be discussed based on your service conditions.
What pressure classes are available for the DN500 size?
Standard offerings include PN10, PN16, and ANSI Class 150. Higher pressure ratings may be available upon request, depending on design validation.
Can you supply the valve with an actuator?
Absolutely. We can provide the valve as a standalone unit or as a complete package with a manual gearbox, pneumatic actuator, or electric actuator. The low torque of the triple eccentric design makes it compatible with a wide range of actuators.
What are the delivery lead times for this product?
Lead times depend on order quantity, material specifications, and optional features. As an established manufacturer with efficient logistics from multiple Chinese ports, we strive to offer competitive lead times. Please contact us with your specific requirements for a precise schedule.
Do you offer certifications or test reports for the fire-safe feature?
We can provide designs that meet recognized fire-safe testing standards. Specific certification documentation can be arranged based on project requirements and the applicable standards you need to comply with.
Is the valve compatible with other connection types besides flanged?
The standard design for DN500 is flanged, as it is the most common and practical for large-diameter pipeline connections. Other connection types like welded ends could be considered for special projects; please inquire for customization possibilities.