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Help CenterMarine Quick Closing Valve for Engine Room Fuel Oil Line, GB/T5744-1993
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As a professional valve manufacturer with a strong focus on marine applications, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance Marine Quick Closing Valve, engineered specifically for fuel oil lines in ship engine rooms. Designed in strict compliance with the Chinese national standard GB/T5744-1993, this valve is a critical safety component, providing rapid and reliable isolation of fuel supply in emergency situations. Our years of experience since 2016, combined with a robust ISO9001 quality management system, ensure that every valve delivers the dependable performance required for demanding maritime environments. We understand that safety at sea is paramount, and our quick closing valve is built to meet that challenge, offering shipbuilders, shipowners, and marine engineers a trusted solution for protecting vessels and crew.
The primary function of this valve is to allow for the immediate shut-off of fuel flow to the engine in case of fire, excessive temperature, or other emergencies detected in the engine room. This swift action is crucial for preventing fuel from feeding a fire and is a mandatory requirement on most commercial and naval vessels. The valve can be operated manually from a safe location outside the engine room via a remote pull-wire mechanism or through an integrated hydraulic or pneumatic actuator system for automated response to alarm signals.
Key Design Features & Technical Advantages:
- Rapid Closure Mechanism: The valve is designed for closure within seconds, minimizing the time fuel is available to a potential fire source. The quick-release mechanism ensures positive and immediate shut-off.
- Robust Construction: The valve body is typically constructed from high-grade cast steel (WCB) or ductile iron, offering excellent strength and corrosion resistance for the harsh marine atmosphere. Critical sealing surfaces are often made from stainless steel or specialized alloys for long-term leak-tight performance.
- Dual Operation Modes: Provides flexibility with both local manual operation and remote actuation capability. The remote station is clearly marked and easily accessible in an emergency.
- Fail-Safe Design: Engineered to close automatically upon loss of control pressure (for pneumatic/hydraulic models) or upon activation of the emergency system, ensuring safety even in system failure scenarios.
- Standard Compliance: Manufactured to meet or exceed the specifications outlined in GB/T5744-1993, which governs the design, manufacture, and testing of quick-closing valves for marine use. This ensures compatibility with classification society rules.
- Low Maintenance: Simple, robust design with minimal moving parts reduces the need for frequent maintenance and enhances overall reliability.
Technical Specifications & Ordering Parameters:
The following table outlines common specifications. Custom configurations are available to meet specific project requirements.
| Parameter | Standard Specification | Options / Notes |
| Design Standard | GB/T5744-1993 | Basis for design and testing |
| Nominal Diameter (DN) | DN50 to DN300 | Other sizes available upon request |
| Pressure Rating (PN) | PN16, PN25 | Suitable for standard fuel oil line pressures |
| Body Material | Cast Steel (WCB) | Ductile Iron, Stainless Steel (CF8/CF8M) |
| Seat/Seal Material | Stainless Steel | Special alloys for high-temperature service |
| Connection | Flanged (GB, JIS, ANSI, DIN) | Specify standard when ordering |
| Actuation | Manual Remote (Pull-wire) | Pneumatic, Hydraulic actuators optional |
| Closure Time | Depends on size and actuator type | |
| Operating Temperature | -20°C to 150°C | Extended ranges achievable |
Benefits for Our Clients:
- Enhanced Vessel Safety: Directly contributes to meeting stringent international safety regulations (SOLAS) and classification society rules by providing a reliable emergency shutdown function.
- Risk Mitigation: Significantly reduces the risk of catastrophic engine room fires by enabling rapid fuel supply isolation, protecting both asset and human life.
- Operational Compliance: Ensures your vessel is equipped with valves that comply with recognized national (GB/T) standards, simplifying the survey and certification process.
- Reduced Lifetime Cost: Durable construction and simple design lead to lower maintenance costs and longer service intervals compared to more complex valve systems.
- Supply Chain Reliability: As a manufacturer, we control the production process, ensuring consistent quality, reliable lead times, and the ability to provide tailored solutions and after-sales support.
Frequently Asked Questions (FAQ):
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Q: Is this valve accepted by major marine classification societies?
A: Valves manufactured to GB/T5744-1993 are widely recognized. For specific project approval, we can provide all necessary documentation, including material certificates and test reports, to support your application to societies like ABS, DNV, LR, BV, etc. Final approval is subject to the society's specific survey and testing procedures. -
Q: Can the valve be supplied with flanges matching international standards like ANSI or JIS?
A: Yes, absolutely. While we manufacture to the GB standard for the valve itself, we can provide flanges drilled to ANSI, JIS, DIN, or other international standards as per your piping specifications. Please specify your required flange standard when inquiring. -
Q: What is the typical delivery lead time for a standard size valve?
A: For standard configurations and materials, our lead time is generally 4-6 weeks. For customized orders or larger quantities, we will provide a specific production schedule upon receipt of your detailed requirements. -
Q: How is the remote pull-wire mechanism designed for reliability?
A: The mechanism uses a robust steel wire housed in a galvanized or stainless steel conduit. It is designed for smooth operation, with clear travel indication and positive engagement/disengagement features. The remote station is typically placed in an easily accessible location outside the engine room, as per safety regulations. -
Q: Do you offer valves suitable for heavy fuel oil (HFO) service?
A: Yes. For HFO lines, we can recommend appropriate material selections for the body and seals to handle higher viscosities and potential contaminants, ensuring reliable operation over the long term. -
Q: What kind of testing is performed on these valves before shipment?
A> Each valve undergoes rigorous factory testing, which typically includes a shell strength test (hydrostatic pressure test), a seat leakage test, and a functional test of the closing mechanism to verify closure time and operation. Certified test reports can be provided. -
Q: Can the valve be integrated with the ship's fire detection and alarm system?
A: Yes. For automated operation, the valve can be equipped with pneumatic or hydraulic actuators that receive a signal from the ship's central safety system. We can discuss interface requirements to ensure compatibility with your vessel's design. -
Q: What are the main shipping ports and terms you work with?
A> We regularly ship from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing. We are experienced in handling international logistics and can work under common trade terms like FOB, CIF, or CFR based on your preference.
Trust in a partner dedicated to maritime safety. Shanghai Zhibang Valve's commitment is reflected in our ISO9001-certified manufacturing processes and our proven track record of supplying reliable marine valves to a global clientele across North America, South America, Europe, Asia, Africa, and Oceania. With an annual export value demonstrating our international reach and reliability, we are positioned to be your dependable source for critical marine safety components. Our valve is more than just a product; it's an integral part of your vessel's safety ecosystem. Contact us today to discuss your specific requirements, request detailed technical data sheets, or to place an order for valves you can trust when it matters most.
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