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Help CenterMarine Double Eccentric Butterfly Valve for Fuel Oil and Lubrication Lines on Vessels
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As a dedicated valve manufacturer with a strong presence in the marine industry since our establishment in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in engineering robust and reliable fluid control solutions for demanding maritime applications. Our Marine Double Eccentric Butterfly Valve is specifically designed to meet the critical challenges of handling fuel oil and lubrication lines on various vessels, from cargo ships to offshore platforms. This valve represents our commitment to providing components that enhance operational safety, reduce maintenance costs, and ensure long-term system integrity in corrosive and high-pressure marine environments. With an annual export value reflecting our global reach, we understand the stringent requirements of shipbuilders and operators worldwide.
The core design of this valve centers on its double eccentric (double-offset) mechanism, which is a significant advancement over standard concentric butterfly valves. This design minimizes wear and tear, providing a superior sealing solution for critical fuel and lube oil systems.
- Superior Sealing Performance: The double eccentric design ensures that the disc lifts off the seat immediately upon opening, eliminating sliding friction. This results in a bubble-tight seal when closed, which is paramount for preventing fuel leaks and ensuring environmental compliance.
- Extended Service Life: By drastically reducing wear on the seat and disc, the valve offers a significantly longer operational lifespan, reducing total cost of ownership and the frequency of dry-dock replacements.
- High-Pressure Capability: Engineered to withstand the pulsating pressures common in ship fuel transfer and booster systems, making it suitable for main engine fuel lines, generator feeds, and lubrication oil circuits.
- Corrosion Resistance: Available in a range of material combinations, including coated carbon steel and stainless steel, to resist saltwater spray, humid atmospheres, and the chemical nature of modern marine fuels.
- Low Operating Torque: The offset shaft design requires lower operating torque compared to concentric valves, allowing for the use of smaller, more cost-effective manual gear operators or actuators, saving space and weight.
For engineers and procurement specialists, the technical specifications are critical for system integration. Below is a summary of key parameters for our standard valve series.
| Parameter | Specification Range |
| Size Range (Nominal Diameter) | DN50 to DN600 (2" to 24") |
| Pressure Class (Standard) | PN16, 150LB (Higher classes available) |
| Body Material Options | WCB, Ductile Iron, CF8/CF8M (304/316 SS) |
| Disc Material Options | WCB with Ni-plating, 304SS, 316SS, Duplex |
| Seat Material Options | PTFE, Reinforced PTFE, Metal Seat (Stainless) |
| Shaft Material | 17-4PH Stainless Steel or equivalent |
| Leakage Class | Class VI (Soft Seat) / Class IV (Metal Seat) per API 598 |
| Operation Types | Lever, Worm Gear, Pneumatic, Electric Actuator |
The benefits for your vessel operations are clear. This valve's reliability translates directly into reduced downtime and enhanced safety by preventing hazardous leaks. Its durable construction means fewer replacements over the vessel's lifecycle, leading to lower maintenance costs. The efficient flow design minimizes pressure drop in critical fuel lines, contributing to optimized engine performance. Furthermore, its compact and lightweight design compared to gate valves allows for easier installation and space savings in crowded engine rooms and piping manifolds.
Frequently Asked Questions (FAQ)
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Q: Why choose a double eccentric design over a standard butterfly valve for fuel oil?
A: The double eccentric design is essential for fuel oil because it provides a reliable, friction-free seal. It prevents the seat from wearing out quickly, which is critical for handling viscous and sometimes abrasive fuels, ensuring long-term leak-tightness and safety. -
Q: What is the typical delivery lead time for an order?
A: Standard sizes and materials typically have a lead time of 4-6 weeks. For large or customized orders, the lead time can be confirmed upon request. We ship from major ports including Shanghai, Guangzhou, and Hong Kong for efficient global logistics. -
Q: Can this valve be used with heavy fuel oil (HFO)?
A: Yes. We recommend specific material combinations for HFO service, such as a metal seat (stainless steel) and a coated or stainless steel disc, to handle the higher temperatures and potential abrasiveness. -
Q: Do you provide valves with actuators for remote operation?
A: Absolutely. We can supply the valve as a complete package with pneumatic (on/off or modulating) or electric actuators. The required torque data for sizing is provided with each valve. -
Q: How does your quality management system ensure product reliability?
A: Our manufacturing processes are governed by an ISO 9001 certified quality management system. Each valve undergoes rigorous pressure testing, material verification, and dimensional checks before shipment. -
Q: What after-sales support do you offer?
A: We provide comprehensive technical documentation, including test reports, material certificates, and installation manuals. Spare parts like seals and gaskets are available, and technical support is accessible for installation or operational queries. -
Q: Are these valves suitable for other shipboard fluids besides fuel and lube oil?
A: With the appropriate material selection, they can be used for seawater cooling lines (with corrosion-resistant materials), inert gas systems, or ballast water treatment lines. Please consult our engineers for specific applications.
Backed by our ISO 9001 certification and a proven track record of supplying to markets across North America, Europe, Southeast Asia, and beyond, Shanghai Zhibang stands as a reliable partner for your marine valve needs. Our valves are engineered not just to meet specifications, but to exceed expectations in the harsh marine environment, contributing to the safety and efficiency of your fleet. We encourage you to contact our sales team with your specific line size, pressure, and material requirements to receive a detailed quotation and technical data sheet. Let us provide you with a valve solution that ensures performance and peace of mind.
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