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Home > Industrial Equipment & Components > Valve > Other Valves & Parts > DN50 Marine Quick Closing Valve, GB/T5744-1993, Flanged End Connection

DN50 Marine Quick Closing Valve, GB/T5744-1993, Flanged End Connection

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DN50 Marine Quick Closing Valve, GB/T5744-1993, Flanged End Connection photo-1

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DN50 Marine Quick Closing Valve, GB/T5744-1993, Flanged End Connection photo-4

DN50 Marine Quick Closing Valve, GB/T5744-1993, Flanged End Connection photo-5

Product Spotlights

DN50 marine safety valve for rapid emergency shutdown on ships. Complies with GB/T5744-1993 standard, features durable flanged connection. Ideal for fuel, lube, and cargo lines. ISO9001-certified manufacturing ensures reliable performance in harsh marine environments. Supports global maritime safety compliance.

Negotiable MOQ: 20 Units (Price negotiable depending on order volume and customization)

Key Specifications

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Nominal Diameter:

DN50

Standard:

GB/T5744-1993

End Connection:

Flanged

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

shanghai

Delivery Detail:

7 days

Product Details
Company Profile
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Nominal Diameter DN50

Standard GB/T5744-1993

End Connection Flanged

Application Marine piping systems

Material Cast steel or ductile iron

Operation Type Quick closing

Pressure Rating PN10, PN16, PN25

Seat Material Stainless steel or rubber

Body Coating Anti-corrosion paint

As a leading manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance and reliable fluid control solutions for the global maritime industry. Our DN50 Marine Quick Closing Valve, designed and manufactured in strict compliance with the GB/T5744-1993 standard, represents our commitment to safety, durability, and operational efficiency. Engineered for critical marine piping systems, this valve ensures rapid isolation in emergency situations, protecting valuable assets and personnel. With years of expertise since our establishment in 2016 and a strong export presence across continents, we deliver products that meet the rigorous demands of international shipbuilding and offshore operations.

The core value of this valve lies in its instant response capability and robust construction. It is an indispensable safety component for fuel oil lines, lubricating oil systems, cargo piping, and other essential services onboard vessels. The flanged end connection facilitates easy and secure installation, ensuring a leak-proof seal that withstands the harsh marine environment, including vibration, temperature fluctuations, and corrosive elements.

Key Features and Technical Advantages:

Rapid Emergency Shutdown: The quick-closing mechanism allows for near-instantaneous valve closure, either manually or via remote actuator linkage, crucial for preventing spillage or system damage in case of fire or pipeline failure.
Robust and Corrosion-Resistant Construction: Typically constructed from high-grade cast steel or ductile iron with anti-corrosion coating, the valve body ensures long-term integrity. Critical sealing components like the seat are often made from stainless steel or resilient materials for reliable shut-off.
Standard Compliance: Manufactured according to the Chinese National Standard GB/T5744-1993 for marine quick-closing valves, ensuring dimensional interchangeability, performance reliability, and acceptance in shipbuilding specifications.
Versatile Flange Connection: The flanged ends are machined to precise standards, compatible with common flange ratings (e.g., PN10, PN16, PN25), simplifying integration into existing ship piping networks without requiring special adapters.
Low Maintenance Design: Built for minimal upkeep, featuring a simple yet effective operating mechanism that remains functional even after long periods of inactivity, a vital trait for marine equipment.
Enhanced Safety: Often includes a visual position indicator and a manual override function, providing clear operational status and ensuring the valve can be operated even if the primary control system is compromised.

Technical Specifications Table:

Parameter	Specification
Nominal Diameter (DN)	50
Standard	GB/T5744-1993
End Connection	Flanged
Common Pressure Ratings (PN)	10, 16, 25
Typical Body Material	Cast Steel / Ductile Iron
Seat Material	Stainless Steel / Rubber (Customizable)
Operation	Quick Closing, Manual or Remote Actuated
Main Application	Marine Fuel, Lubrication, Cargo & Bilge Lines

Benefits for Your Operations:

Risk Mitigation: Significantly reduces the risk of fire escalation or environmental pollution by enabling fast isolation of flammable or hazardous fluid lines.
Regulatory Compliance: Helps shipowners and builders comply with international maritime safety codes (like SOLAS) and classification society rules that mandate quick-closing valves on specific systems.
Operational Reliability: The durable design minimizes failure points, contributing to higher overall system uptime and reducing unscheduled maintenance.
Cost-Effectiveness: By preventing potential major incidents, this valve protects against costly repairs, cleanup operations, and vessel downtime, offering an excellent return on investment.
Global Supply Chain Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and flexible delivery to shipyards and ports worldwide.

Shanghai Zhibang Valve backs every DN50 Marine Quick Closing Valve with the credibility of an ISO9001-certified quality management system, ensuring consistent product excellence from raw material to final testing. Our established track record, with an annual export value ranging between US$1 million and US$1.5 million, and a widespread market footprint across North and South America, Europe, Asia, Africa, and Oceania, testifies to the global trust in our valves. This valve is not just a component; it is a critical safety investment engineered for peace of mind. Contact us today to discuss how this reliable, standards-compliant valve can enhance the safety and efficiency of your marine projects, and explore our capability for customized specifications to meet your exact requirements.

Frequently Asked Questions (FAQ)

Q: Is this valve suitable for fuel oil lines on ships?
A: Absolutely. The DN50 Marine Quick Closing Valve is specifically designed for applications like fuel oil, lubricating oil, and other flammable fluid lines on board vessels, where rapid shutdown is a critical safety requirement.
Q: What does compliance with GB/T5744-1993 entail?
A: This Chinese national standard specifies the design, dimensions, materials, manufacturing, testing, and inspection requirements for quick-closing valves used in marine systems. Compliance ensures the valve meets recognized performance and safety benchmarks for maritime use.
Q: Can the valve be operated remotely?
A: Yes. The valve is designed to be connected to a remote actuation system, typically via a wire rope or pneumatic/hydraulic actuator. This allows for emergency closure from a safe location away from the valve itself.
Q: What flange standards are the ends compatible with?
A: The flanged ends are generally manufactured to be compatible with common international flange standards such as JIS, DIN, or ANSI, depending on specification. The exact standard and pressure class (e.g., PN16) should be confirmed at the time of ordering.
Q: What materials are available for the valve body and seat?
A: The standard body material is often cast steel or ductile iron with anti-corrosion treatment. Seat materials can include stainless steel for tight shut-off or resilient materials like rubber for specific media. Material options can be discussed based on your application.
Q: Do you provide testing certificates with the valve?
A> As an ISO9001-certified manufacturer, we conduct rigorous factory acceptance tests, including shell tests and seat leakage tests. Relevant test certificates can be provided upon request to support classification society approvals.
Q: What is the typical lead time for this product?
A: Lead times vary based on order quantity and specific configuration. We maintain efficient production and logistics, with shipping available from multiple major Chinese ports to ensure timely delivery to global markets.
Q: Can you customize valves for specific pressure ratings or connections?
A: Yes. While the standard product is DN50 per GB/T5744-1993, we can discuss customization for different pressure classes, alternative end connections, or specific material grades to suit unique project specifications.