Contact Platform Support
Help CenterFire-Safe Design Marine Butterfly Valve With Rubber Lining and Metal Seat Backup
Product Spotlights
Related Products
-
Marine Desulfurization Tower Butterfly Valve With Extended 2-Year Warranty on Seal AssemblyNegotiableMOQ: 1 Unit -
DN50-DN600 Marine Pneumatic Actuated Butterfly Valve With Explosion Proof OptionNegotiableMOQ: 1 Unit
-
Marine Pneumatic Butterfly Valve for Bilge Pump Control SystemsNegotiableMOQ: 1 Unit
-
Fast 90° Operation Pneumatic Actuated Butterfly Valve, PN1.6MPa StandardNegotiableMOQ: 1 Unit
-
Marine Pneumatic Actuated Butterfly Valve With Mill Test ReportNegotiableMOQ: 1 Unit
As a specialized manufacturer of industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our advanced Fire-Safe Design Marine Butterfly Valve with Rubber Lining and Metal Seat Backup. Engineered for the demanding environments of marine and offshore applications, this valve represents a critical safety component where fire integrity is non-negotiable. Our design philosophy prioritizes operational reliability under normal conditions and failsafe performance during emergency fire scenarios, directly addressing the stringent requirements of shipbuilders, offshore platform operators, and marine engineering contractors. With a decade of manufacturing expertise since our establishment in 2016, we have refined this product to offer a robust solution that combines sealing efficiency with ultimate fire protection.
The core innovation of this valve lies in its dual-sealing system. The primary seal is provided by a resilient EPDM or NBR rubber lining, ensuring bubble-tight shut-off for routine service involving seawater, ballast, fuel, and various chemicals. The secondary, and most crucial, seal is the metal seat backup. In the event of a fire where the elastomeric lining is compromised by extreme heat, the metal-to-metal contact between the disc and the seat ring maintains a seal, preventing catastrophic fluid release and helping to contain the fire. This design is rigorously tested to meet recognized fire-safe standards.
Key Technical Features & Specifications:
- Fire-Safe Certification: The valve is designed and manufactured to comply with the testing requirements of API 607 and API 6FA for fire-safe valves, ensuring performance integrity during and after exposure to fire.
- Dual-Seal Mechanism: Combines the excellent sealing of an elastomer with the fire resilience of metal. The rubber provides zero-leakage during normal operation, while the metal seat engages as a backup under fire conditions.
- Robust Construction: The valve body is typically cast from ductile iron or carbon steel, providing high strength and corrosion resistance suitable for marine atmospheres. The disc is often made of stainless steel or other corrosion-resistant alloys.
- Versatile Actuation: Available with manual lever, gear operator, or can be fitted with pneumatic/hydraulic/electric actuators for remote operation, facilitating integration into automated shipboard systems.
- Broad Fluid Compatibility: The EPDM lining is suitable for water, seawater, and mild chemicals, while NBR is ideal for oil-based fluids. The metal seat allows handling of fluids at elevated temperatures post-fire.
- Bi-Directional Sealing: Engineered to seal effectively against pressure from either direction, a crucial feature for many marine piping layouts.
The following table outlines standard specifications for common sizes:
| Nominal Size (DN) | Pressure Rating (PN) | Standard Face-to-Face (mm) | Typical Body Material |
|---|---|---|---|
| 50 - 150 | PN16 / Class 150 | Per ISO 5752 | Ductile Iron |
| 200 - 300 | PN16 / Class 150 | Per ISO 5752 | Ductile Iron / Carbon Steel |
| 350 - 600 | PN10 / Class 150 | Per ISO 5752 | Carbon Steel |
Advantages & Customer Benefits:
- Enhanced Safety & Regulatory Compliance: This valve is engineered for applications where fire safety is mandated by classification societies like ABS, DNV, Lloyd's Register, and BV. It helps vessel owners and operators meet stringent international safety codes (SOLAS).
- Reduced Lifecycle Cost: The durable construction and fire-safe design minimize the risk of total valve failure in an emergency, potentially preventing much more costly system damage or downtime.
- Operational Reliability: The soft rubber lining ensures excellent, long-lasting sealing in normal service, reducing maintenance frequency and leakage issues common in harsh marine environments.
- Design Flexibility: Available in wafer, lug, and double flanged designs to suit various piping configurations and installation requirements on board ships and offshore structures.
- Global Supply Chain Support: With annual exports valued between US$1-1.5 million and major shipment ports including Shanghai, Guangzhou, and Hong Kong, we ensure reliable and timely delivery to global markets from North America and Europe to Southeast Asia and Africa.
Trust in a manufacturer with a proven global footprint. Shanghai Zhibang Valve supplies to diverse markets across North America, South America, Europe, Asia, Africa, and Oceania, demonstrating the universal applicability and acceptance of our quality valves. Our operations are underpinned by an ISO9001 Quality Management System, ensuring consistent manufacturing standards from raw material inspection to final testing. This Fire-Safe Marine Butterfly Valve is not just a product; it's a commitment to safety and reliability for your most critical marine applications. We invite shipyards, marine equipment distributors, and offshore project managers to contact us for detailed specifications, competitive quotations, and to discuss custom requirements. Secure your systems with a valve designed for performance and protection.
Frequently Asked Questions (FAQ):
-
Q: What exactly does "fire-safe" mean for this butterfly valve?
A: "Fire-safe" means the valve is designed to maintain a seal and prevent internal leakage (through the seat) even when the primary soft sealing element (the rubber lining) is destroyed by fire. The metal seat backup provides a secondary seal under high-temperature conditions, as per standardized fire test procedures like API 607. -
Q: Can this valve be used for both on/off service and throttling in marine systems?
A: While its primary design is for reliable on/off isolation, the valve can be used for moderate throttling applications. For precise flow control, especially with actuators, it is recommended to consult our technical team for disc profile and material recommendations. -
Q: What are the main differences between EPDM and NBR rubber linings, and how do I choose?
A: EPDM has excellent resistance to water, steam, weathering, and many polar chemicals. NBR offers superior resistance to oils, fuels, and hydrocarbons. The choice depends entirely on the fluid media in your specific application. -
Q: Is the valve suitable for seawater service?
A: Yes, when configured with an EPDM lining and appropriate body/disc materials (like ductile iron with epoxy coating or stainless steel), it is highly suitable for seawater, ballast, and cooling water systems on ships. -
Q: Do you provide documentation for classification society approval?
A: We can provide standard material certificates, test reports, and manufacturing documentation (e.g., per EN 10204 3.1). Specific approval from classification societies is typically obtained by the shipyard or end-user, but our documentation is prepared to support that process. -
Q: What types of actuators can be fitted?
A: The valve can be fitted with manual gearboxes, as well as pneumatic (double-acting or spring-return), hydraulic, or electric actuators. The mounting interface is standardized (ISO 5211), allowing for a wide range of actuator options. -
Q: What is your lead time for standard sizes?
A: Lead times vary based on size, material, and order quantity. Generally, for standard configurations from our inventory range, lead times can be competitive. Please inquire with your specific requirements for an accurate timeline. -
Q: How do you ensure quality control?
A: Our quality control process is integral, governed by our ISO9001 system. It includes incoming material checks, in-process inspections during machining and assembly, and final testing which typically includes hydrostatic shell tests and seat leakage tests per relevant standards.
Send Inquiry to This Supplier
You May Also Like
-
Marine Explosion Proof Electric Butterfly Valve With IP66/IP67 Protection RatingNegotiableMOQ: 1 Unit
-
Marine Explosion Proof Electric Butterfly Valve for Hazardous Zone Pump ControlNegotiableMOQ: 1 Unit
-
Marine Pneumatic Butterfly Valve Compliant With DNV LR StandardsNegotiableMOQ: 1 Unit
-
Stainless Steel Marine Explosion Proof Electric Butterfly Valve, DN50 to DN600NegotiableMOQ: 1 Unit
-
Double Acting Pneumatic Actuator Butterfly Valve, DN80-DN300NegotiableMOQ: 1 Unit
-
Marine Explosion Proof Electric Butterfly Valve With ATEX Certification and 380V Power SupplyNegotiableMOQ: 1 Unit
-
Marine Explosion Proof Electric Butterfly Valve for Offshore Platform Seawater SystemsNegotiableMOQ: 1 Unit
-
Marine Explosion Proof Electric Butterfly Valve With Remote PLC InterfaceNegotiableMOQ: 1 Unit
-
Marine Explosion Proof Electric Butterfly Valve With 2-Year Warranty and MTRNegotiableMOQ: 1 Unit
-
Marine Explosion Proof Electric Butterfly Valve Compliant With IMO and SOLAS StandardsNegotiableMOQ: 1 Unit
