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Home > Industrial Equipment & Components > Valve > Other Valves & Parts > Marine Quick Closing Valve Compliant With GB/T5744-1993 Standard, Manual Lever Operation

Marine Quick Closing Valve Compliant With GB/T5744-1993 Standard, Manual Lever Operation

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Marine Quick Closing Valve Compliant With GB/T5744-1993 Standard, Manual Lever Operation photo-5

Product Spotlights

Manual lever marine quick closing valve compliant with GB/T5744-1993. Ensures rapid emergency shut-off for shipboard safety. Robust construction with materials like cast steel or stainless steel for marine durability. Simple, reliable operation with clear visual indication. Suitable for fuel, oil, ballast, and cooling water systems. ISO9001 certified manufacturing from an experienced global supplier.

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

Key Specifications

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Standard Compliance:

GB/T5744-1993 (Marine Standard)

Operation Mode:

Manual Lever Operation

Valve Type:

Quick Closing Valve

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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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Standard Compliance GB/T5744-1993 (Marine Standard)

Operation Mode Manual Lever Operation

Valve Type Quick Closing Valve

Application Marine Piping Systems

Connection Type Flanged (Common)

Body Material Cast Steel, Ductile Iron, Stainless Steel

Seat Material Bronze, Stainless Steel

Pressure Rating PN10, PN16, PN25 (or Class 150, 300)

Temperature Range -20°C to 200°C (Depending on material)

Size Range DN15 to DN300 (1/2“ to 12“)

As a professional manufacturer with a strong focus on marine fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our high-performance Marine Quick Closing Valve. Engineered to meet the rigorous demands of shipboard environments, this valve is designed for rapid isolation of pipelines in emergency situations, ensuring the safety and integrity of your vessel's critical systems. Our commitment to quality, backed by ISO9001 certification, ensures every valve delivers reliable performance and long service life. With extensive experience serving global markets from North America to Southeast Asia, we understand the specific requirements of marine applications and provide valves that shipbuilders and shipowners can trust.

This manual lever-operated quick closing valve is a crucial safety component in marine piping systems. Its primary function is to allow for the immediate shut-off of fluid flow, preventing potential hazards in case of fire, pipe rupture, or other emergencies. The design strictly adheres to the Chinese national standard GB/T5744-1993 for marine valves, ensuring compatibility and performance recognized in the industry.

Key Features and Technical Advantages:

Fast and Reliable Shut-off: The lever mechanism is engineered for swift 90-degree operation, enabling the valve to close within seconds. This rapid response is critical for emergency protocols on board.
Robust Construction: Manufactured from durable materials like cast steel or stainless steel, the valve body withstands the corrosive marine atmosphere, high pressure, and vibration typical of ship operations.
Positive Sealing: Features a precision-machined seat and disc (often in bronze or stainless steel) that provides a bubble-tight seal when closed, preventing any leakage of oil, water, or other fluids.
Clear Visual Indication: The lever position provides an immediate and unambiguous visual indication of whether the valve is fully open or fully closed, which is essential for safety checks and operations.
Low Maintenance Design: Simple and sturdy construction minimizes the need for frequent maintenance. The packing gland is easily adjustable to ensure a leak-free stem over time.
Versatile Application: Suitable for a wide range of services on ships, including fuel oil lines, lubricating oil systems, bilge lines, ballast systems, tank vent lines, and cooling water systems.

Technical Specifications Table:

Parameter	Specification
Design Standard	GB/T5744-1993 (Marine Valve Standard)
Operation	Manual Lever (Quarter-turn)
Pressure Rating	Common: PN16, Class 150. Higher ratings available.
Temperature Range	Standard: -20°C to 150°C. Extended ranges customizable.
Body Material Options	Cast Steel (WCB), Ductile Iron, Stainless Steel (CF8/CF8M)
Trim Material (Seat/Disc)	Bronze, Stainless Steel
Connection	Flanged (RF, FF). Threaded ends optional.
Size Range (DN)	15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300
Coating/Finishing	Marine-grade paint, epoxy coating, or galvanization for corrosion protection.

Benefits for Our Clients:

Enhanced Vessel Safety: Provides a reliable and immediate means to isolate sections of the piping system, directly contributing to the overall safety management of the ship.
Regulatory Compliance: Adherence to the GB/T5744-1993 standard facilitates the approval process for new builds and retrofits, particularly in markets familiar with this specification.
Operational Efficiency: The simple manual operation requires no external power source, making it fail-safe and easy for crew members to operate under any circumstances.
Cost-Effective Solution: Offers a critical safety function with a straightforward design that ensures durability and reduces long-term operational and maintenance costs.
Global Supply Chain Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and efficient delivery to shipyards and ports worldwide.

Trust in a manufacturer with a proven track record. Since our establishment in 2016, Shanghai Zhibang Valve has grown to serve a diverse international clientele across continents, from North America and Western Europe to Africa and Oceania, with an annual export value reaching up to US$1.5 million. Our ISO9001 certified quality management system is your assurance of consistent product excellence. This Marine Quick Closing Valve embodies our dedication to safety, reliability, and value. For shipbuilders, repair yards, and fleet operators seeking dependable marine valves that meet recognized standards, this product is a strategic choice. Contact us today to discuss your specific requirements, request a detailed quotation, or place your order for a safer maritime operation.

Frequently Asked Questions (FAQ)

Q: What is the main purpose of this quick closing valve on a ship?
A: Its primary purpose is for emergency isolation. It allows crew to rapidly shut off the flow of flammable or hazardous fluids (like fuel oil) in specific pipeline sections during a fire or pipe failure, helping to contain the incident and protect the vessel.
Q: How does the GB/T5744-1993 standard relate to other international marine standards?
A: GB/T5744-1993 is the Chinese national standard for marine valves, specifying design, material, testing, and marking requirements. It is widely recognized and accepted, particularly in Asian shipbuilding markets. It ensures the valve is fit for marine service, similar in intent to other national or classification society standards.
Q: Can this valve be used for services other than fuel oil?
A: Absolutely. While crucial for fuel lines, it is also suitable for lubricating oil, bilge, ballast, tank venting, and sea water cooling systems. The specific material selection (body and trim) should be chosen based on the fluid media.
Q: Is the lever operation suitable for valves in hard-to-reach locations?
A: The manual lever is designed for direct, local operation. For valves installed in inaccessible spots, extended lever kits or chain wheel operators can be provided as an optional accessory upon request to facilitate remote operation.
Q: What are the available pressure classes and how do I select the right one?
A> Common pressure ratings are PN16 (Class 150). We also offer PN25 (Class 300) and others. The selection depends on your system's maximum working pressure. Please provide your design pressure, and we will recommend the appropriate class.
Q: Do you offer different material combinations for corrosive environments?
A: Yes. For highly corrosive seawater service or specific chemicals, we recommend stainless steel (CF8/CF8M) for the body and trim. We can discuss your operating environment to propose the most cost-effective and durable material pairing.
Q: What testing is performed on these valves before shipment?
A> Each valve undergoes rigorous factory testing, which typically includes a shell test (body strength) and a seat leakage test per the requirements of the GB/T5744-1993 standard. Test certificates can be provided.
Q: What is the typical lead time for an order?
A: Lead time varies based on order quantity, size, and material specifications. Standard configurations in common sizes may have shorter lead times. We prioritize efficient production and will provide a clear delivery schedule upon order confirmation.