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Help CenterJIS F7399 Quick Closing Valve for Marine Applications, Pneumatic Operation With Manual Override
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As a specialized manufacturer of industrial valves with a strong export record to global maritime markets, Shanghai Zhibang Valve is proud to introduce our JIS F7399 compliant Quick Closing Valve. Engineered for critical marine applications, this valve is designed for rapid isolation of pipelines in emergency situations, such as fire or flooding. Our pneumatic operation ensures swift, reliable response, while the integrated manual override provides essential backup control, aligning with the stringent safety requirements of shipboard systems. With our ISO9001 certified manufacturing processes, we deliver valves that meet the exacting standards demanded by shipyards, offshore platforms, and naval architects worldwide.
This valve is a cornerstone of marine safety systems, offering unparalleled reliability and performance. Its core function is to automatically or manually shut off the flow of fuel oil, lubricating oil, or other flammable fluids in designated sections of a ship's piping system upon activation of a safety signal. This immediate action is crucial for containing potential hazards and protecting vessel integrity, crew, and cargo.
Key Design Features & Technical Advantages:
- Dual-Control Operation: Primary pneumatic actuation for fast, remote, or automated closure. A built-in handwheel or lever allows for manual operation in case of pneumatic system failure or for maintenance purposes.
- JIS F7399 Compliance: Manufactured to meet the Japanese Industrial Standard for quick closing valves used in ships, ensuring compatibility with international maritime specifications and acceptance by major classification societies.
- Rugged Construction: The valve body is typically crafted from corrosion-resistant materials like cast steel (WCB, WCC) or stainless steel (CF8, CF8M) to withstand harsh marine environments, including saltwater exposure.
- Bubble-Tight Sealing: Features a precision-machined seat and disc (often with Stellite or similar hard-facing) to ensure a leak-proof seal in the closed position, critical for containing hazardous fluids.
- Fail-Safe Configurations: Available in both double-acting (requires air to open and close) and spring-return (automatically closes on air failure) actuator types to suit specific safety logic requirements.
- Low Maintenance Design: Sealed bearings and robust stem packing (e.g., graphite) minimize the need for frequent servicing, even under continuous vibration and variable temperatures.
The technical specifications can be tailored to project needs, but standard offerings include:
| Parameter | Standard Specification | Optional / Customizable |
| Size (Nominal Diameter) | DN50, DN80, DN100, DN150 | DN15 to DN300 |
| Pressure Rating | PN16 (Class 150) | PN10, PN25, PN40 (Class 300) |
| Body Material | Carbon Steel (WCB) | Ductile Iron, Stainless Steel 304/316, Duplex |
| Seat & Disc Material | 13% Cr Stainless Steel | Stellite, Alloy 20, PTFE Lined |
| Actuator Air Supply | 4-7 bar (60-100 psi) | Other pressure ranges available |
| End Connection | Flanged (JIS 10K/20K, ANSI, DIN) | Threaded (NPT, BSP), Butt Weld |
Benefits for Your Marine Project:
- Enhanced Safety Compliance: Directly supports compliance with SOLAS (Safety of Life at Sea) regulations and the requirements of classification societies like ABS, DNV, LR, and BV for fuel oil and lubricating oil systems.
- Operational Reliability: The robust design ensures consistent performance under the dynamic conditions of a vessel at sea, reducing the risk of in-service failure.
- Reduced Total Cost of Ownership: Durable materials and construction lower maintenance frequency and extend service intervals, leading to lower lifecycle costs.
- System Integration Flexibility: Can be interfaced with central fire alarm systems, emergency shutdown (ESD) panels, or operated from local push-button stations.
- Global Supply Chain Support: With established export channels from major Chinese ports like Shanghai and Guangzhou, we ensure timely delivery to shipyards and repair docks worldwide.
Trust in a manufacturer with a proven track record. Since our establishment in 2016, Shanghai Zhibang Valve has built a reputation for quality, exporting over a million dollars in valve solutions annually to key maritime regions including North America, Europe, Southeast Asia, and the Middle East. Our ISO9001 certification underpins our commitment to consistent quality control. This JIS F7399 Quick Closing Valve embodies our dedication to marine safety. It is not just a component; it is a critical safeguard for your vessel. For detailed quotations, technical drawings, or to discuss custom configurations for your specific application, contact our engineering team today.
Frequently Asked Questions (FAQ)
Q1: What is the primary purpose of this quick closing valve on a ship?
A1: Its primary purpose is safety isolation. It is designed to rapidly cut off the flow of flammable or hazardous liquids (like fuel or lube oil) in specific piping sections during an emergency, such as a fire, to prevent the escalation of the incident.
Q2: How fast does the valve close?
A2: The closure time is a critical parameter. Under standard pneumatic pressure, our valves are engineered to achieve full closure typically within 5 to 15 seconds, depending on valve size and actuator configuration. Specific closure times can be verified upon request.
Q3: Can this valve be operated manually if the air supply is lost?
A3: Yes, absolutely. A key feature is the integrated manual override, usually a handwheel or lever. This allows crew members to open or close the valve manually in case of pneumatic system failure or during maintenance, ensuring control is never lost.
Q4: Is JIS F7399 accepted by international classification societies?
A4: Yes, the JIS F7399 standard is widely recognized and accepted by major international marine classification societies, including ABS, DNV, Lloyd's Register, and others, for valves used in Japanese-built ships and often specified globally for its rigorous requirements.
Q5: What fluids is this valve suitable for?
A5: It is primarily designed for fuel oils (MDO, HFO), lubricating oils, and other non-aggressive hydrocarbons in marine service. The specific material selection (e.g., stainless steel seats, special seals) can be adjusted to handle other media; please inquire for specific fluid compatibility.
Q6: Do you provide documentation for classification society approval?
A6: We can provide a comprehensive documentation package that typically includes material certificates, pressure test reports, and dimensional drawings. This package supports the approval process with classification societies. Specific society stamping may be available upon request.
Q7: What is the lead time for a standard size valve?
A7: For standard configurations in common sizes (e.g., DN50-DN150, carbon steel), lead time is generally 4-6 weeks. This can vary for custom materials, larger sizes, or specific certification requirements. We provide accurate lead times with every quotation.
Q8: Can the valve be supplied with different flange standards?
A8: Certainly. While JIS flanges are standard, we regularly manufacture valves with ANSI, DIN, BS, or GOST flanges to match the existing piping on the vessel. The required flange standard and facing should be specified at the time of order.
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