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Home > Industrial Equipment & Components > Valve > Gate Valve > GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End thumbnail-3

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End thumbnail-4

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End thumbnail-5

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End photo-1

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End photo-2

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End photo-3

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End photo-4

GB/T Marine Cast Iron Gate Valve for Sewage, DN50-DN200, PN1.6MPa Flanged End photo-5

Product Spotlights

GB/T standard marine gate valve in cast iron for sewage systems. Features flanged ends (DN50-DN200, PN1.6MPa), robust metal-seal design for durability against corrosive/abrasive fluids. Offers reliable flow control, simplified installation, and reduced maintenance. Ideal for global marine applications, backed by manufacturer's ISO9001 quality and export expertise.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Cast Iron

Standard:

Other, GB/T

Application:

Other, Marine Sewage Systems

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Cast Iron

Standard Other, GB/T

Application Other, Marine Sewage Systems

Type Other, Gate Valve

Size Range DN50 to DN200

Pressure Rating PN1.6MPa

End Connection Flanged End

Operation Manual

Seat Type Metal Seat

Design Standard National Standard GB/T

As a dedicated manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our GB/T Marine Cast Iron Gate Valve, engineered specifically for demanding sewage applications in marine environments. With years of expertise since our establishment in 2016 and a robust ISO9001 certified quality management system, we understand the critical need for durable, leak-proof, and easy-to-maintain valves in shipboard sewage systems. This valve is designed to offer superior flow control, exceptional corrosion resistance, and long-term performance under the challenging conditions of seawater and waste handling, providing a dependable solution for shipbuilders, repair yards, and marine equipment suppliers worldwide.

Our Marine Cast Iron Gate Valve is meticulously crafted to meet the rigorous GB/T national standards, ensuring compatibility and reliability in Chinese and international marine projects. Its robust construction and thoughtful design address the common pain points in sewage system valve applications.

Key Features & Technical Advantages:

Robust Cast Iron Body: Manufactured from high-grade cast iron, the valve body offers excellent strength and durability, capable of withstanding the corrosive nature of marine sewage and external seawater exposure.
Precise Flow Control: The gate valve design provides a straight-through flow path when fully open, minimizing pressure drop and allowing for efficient, unobstructed passage of fluids and solids common in sewage.
Flanged End Connection (PN1.6MPa): The flanged ends conform to standard dimensions, facilitating secure and straightforward installation into existing pipeline systems. The PN1.6MPa pressure rating indicates a design working pressure of 16 bar, suitable for a wide range of marine sewage system pressures.
Metal-to-Metal Sealing: The valve utilizes a metal seat design, creating a reliable seal that is resilient against abrasive particles often found in sewage, enhancing service life and reducing maintenance frequency.
Manual Operation: Features a handwheel or gear operator for reliable manual control, allowing for precise opening and closing even in tight engine room spaces.
Size Versatility: Available in a comprehensive range from DN50 (2") to DN200 (8"), providing flexibility for various pipeline diameters within a vessel's sewage system.
Corrosion Protection: Standard coatings or treatments are applied to the cast iron to improve its resistance to rust and corrosion, a critical factor for longevity in saltwater environments.

Detailed Technical Specifications:

Parameter	Specification
Product Type	Gate Valve
Body Material	Cast Iron
Size Range (Nominal Diameter)	DN50, DN65, DN80, DN100, DN125, DN150, DN200
Pressure Rating	PN1.6 MPa
End Connection	Flanged (RF face as standard)
Design & Manufacturing Standard	GB/T (Chinese National Standard)
Seat & Seal Material	Metal (e.g., Cast Iron / Bronze)
Stem Material	Stainless Steel (optional)
Operation Mode	Manual (Handwheel)
Applicable Fluid	Sewage, Seawater, Wastewater
Temperature Range	Standard cast iron temperature rating

Benefits for Your Business:

Enhanced System Reliability: Reduces the risk of leaks and failures in critical sewage lines, ensuring operational continuity and environmental compliance.
Reduced Maintenance Costs: The durable cast iron construction and metal seat design lower the total cost of ownership by extending service intervals and replacement cycles.
Simplified Installation & Inventory: Standard flanged dimensions and compliance with GB/T allow for easy integration and streamline your spare parts management.
Global Market Suitability: Designed to meet the needs of shipyards and operators across our main markets, including North America, Europe, Southeast Asia, and the Middle East.

Shanghai Zhibang Valve has built a solid reputation by exporting high-quality valve solutions valued between US$1 Million to US$1.5 Million annually to a diverse global clientele spanning North America, South America, Europe, Asia, Africa, and Oceania. Our products ship efficiently from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery. Choosing our GB/T Marine Cast Iron Gate Valve means partnering with an experienced manufacturer dedicated to quality (ISO9001 certified) and customer satisfaction. Its proven durability in sewage applications, combined with our extensive export experience, makes it a trustworthy and cost-effective component for your marine projects. Contact us today to discuss your specific requirements, request a quote, or learn more about our full valve portfolio.

Frequently Asked Questions (FAQ):

Q: Is this valve suitable for handling raw sewage on ships?
A: Yes, it is specifically designed for sewage applications in marine environments. The cast iron body and metal seat are chosen for their durability against corrosive and abrasive waste fluids.
Q: What does the "GB/T" standard mean, and will it fit international piping systems?
A: GB/T refers to the Chinese National Standard. The flanged dimensions are generally compatible with many international flange standards (like DIN, ANSI) for the same pressure class (PN16), but it is always recommended to verify specific flange facing and drilling details for your project.
Q: Can this valve be used with seawater as well?
A: While primarily designed for sewage, the corrosion-resistant properties of the cast iron make it suitable for seawater service. However, for dedicated seawater lines, valves with more specialized alloys might be recommended.
Q: What is the typical lead time for an order of DN100 valves?
A: Lead times vary based on order quantity and current stock. As a manufacturer, we can provide accurate lead time information upon receipt of your inquiry. Our multiple shipping ports help optimize delivery schedules.
Q: Do you offer different stem materials other than the standard?
A: Yes, customization is possible. While a standard material is used, options like stainless steel stems are available upon request to enhance corrosion resistance for specific applications.
Q: Is the valve operation smooth, considering it might be used infrequently?
A: The valve is designed with operational reliability in mind. Proper lubrication and the mechanical design help ensure smooth operation even after periods of inactivity, which is common in some marine systems.
Q: What after-sales support do you provide?
A: We provide technical documentation, installation guidance, and support for our products. Our ISO9001 certification underpins our commitment to consistent quality and customer service.
Q: Are these valves certified for marine use by classification societies?
A: The valves are manufactured to GB/T standards. Specific certifications from marine classification societies (like ABS, DNV, LR) can be arranged as an optional service, subject to project requirements and additional testing.