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Home > Industrial Equipment & Components > Valve > Gate Valve > GB/T Marine Gate Valve for Ballast Water System, Cast Steel Body With Epoxy Coating, PN16, Flanged DN50-DN300
GB/T Marine Gate Valve for Ballast Water System, Cast Steel Body With Epoxy Coating, PN16, Flanged DN50-DN300
Product Spotlights
Specially designed for marine ballast water systems, this GB/T standard gate valve features a durable cast steel body with a protective epoxy coating for superior seawater corrosion resistance. Rated PN16 with flanged connections from DN50 to DN300, it ensures reliable shut-off and flow control. The outside screw & yoke design offers smooth operation and low maintenance. An optional gearbox facilitates handling of larger sizes.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Cast Steel Body with Epoxy Coating
Application:
Other, Ballast Water System
Standard:
Other, GB/T
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Cast Steel Body with Epoxy Coating
Application
Other, Ballast Water System
Standard
Other, GB/T
Type
Other, Gate Valve
Pressure Rating
PN16
Connection Type
Flanged
Size Range
DN50 to DN300
Suitable Medium
Seawater, Ballast Water
Operation
Manual, Gearbox (Optional)
Design
Rising Stem, Outside Screw & Yoke
As a professional valve manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable fluid control solutions for the demanding marine industry. Our GB/T Marine Gate Valve is engineered specifically for ballast water systems, offering superior durability and corrosion resistance to handle seawater environments. With a commitment to precision engineering since our establishment in 2016, we ensure each valve delivers consistent performance, contributing to the safety and efficiency of maritime operations worldwide.
This cast steel gate valve is a critical component for managing ballast water flow, designed to meet the stringent requirements of marine applications. Its construction and features are tailored to withstand harsh conditions while ensuring long service life and minimal maintenance.
Core Product Features & Technical Advantages:
- Exceptional Corrosion Protection: The valve body is constructed from high-quality cast steel and finished with a specialized epoxy coating. This coating provides an effective barrier against seawater corrosion, abrasion, and chemical attack, significantly extending the valve's operational lifespan in ballast systems.
- Robust Pressure & Seal Integrity: Rated for PN16 pressure, this valve is built to handle the operational pressures encountered in ballast water systems. The wedge and seat design ensures a tight, bubble-tight shut-off, preventing leakage and ensuring precise flow control, which is vital for vessel stability and safety.
- Standardized Flanged Connection: Featuring standard flanged ends (DN50 to DN300), the valve ensures easy and secure installation into existing pipeline systems. The flanged design provides a stable, leak-proof connection that can withstand pipeline stresses and vibrations common in marine environments.
- Durable and Low-Maintenance Design: Utilizing a rising stem with outside screw and yoke (OS&Y) design, the operating mechanism is isolated from the flow medium. This prevents corrosion of the threaded stem, ensures smooth operation, and reduces maintenance frequency and costs over time.
- Versatile Operation Options: The valve is primarily designed for manual operation via a handwheel. For larger sizes or applications requiring easier operation, a gearbox operator is available as an optional accessory, providing mechanical advantage for opening and closing.
Key Technical Specifications:
| Parameter | Specification |
| Product Standard | GB/T |
| Valve Type | Marine Gate Valve |
| Body Material | Cast Steel with Epoxy Coating |
| Pressure Class | PN16 |
| Connection Type | Flanged |
| Size Range (Nominal Diameter) | DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 |
| Suitable Medium | Seawater, Ballast Water |
| Temperature Range | Standard for ambient seawater temperatures |
| Operation Mode | Manual (Handwheel), Gearbox Optional |
| Design Standard | Rising Stem, Outside Screw & Yoke (OS&Y) |
Benefits for Your Operations:
- Enhanced System Reliability: The robust construction and corrosion-resistant coating minimize failure risks, ensuring dependable performance for critical ballast operations.
- Reduced Lifecycle Costs: The durable design and protected stem mechanism lower maintenance needs and part replacement frequency, offering a favorable total cost of ownership.
- Compliance and Compatibility: Manufactured to GB/T standards with flanged connections, these valves integrate seamlessly into marine piping systems designed with similar specifications.
- Operational Safety: The secure, bubble-tight seal and clear open/close indication (via rising stem) contribute to safer ballast water management and overall vessel safety.
Backed by our ISO9001 certification and years of manufacturing expertise, Shanghai Zhibang Valve has established a strong track record, with products exported to major markets across North America, South America, Europe, Asia, Africa, and Oceania. Our annual export value reflects the trust placed in us by international clients. We support efficient logistics with multiple shipment ports including Shanghai, Guangzhou, and Hong Kong. Choose our GB/T Marine Gate Valve for a solution that combines proven durability, specialized marine-grade protection, and reliable performance. Contact us today to discuss your specific requirements or to request a quotation for your project.
Frequently Asked Questions (FAQ)
-
What is the primary application of this gate valve?
This valve is specifically designed for use in ship ballast water systems to control the flow of seawater used for stabilizing the vessel. Its materials and coating are selected for high resistance to seawater corrosion. -
Why is an epoxy coating used on the cast steel body?
The epoxy coating provides an additional, robust layer of protection against the highly corrosive nature of seawater. It helps prevent rust and pitting, significantly extending the service life of the valve in marine environments compared to uncoated carbon steel. -
What does the pressure rating PN16 mean?
PN16 indicates a nominal pressure rating of 16 bar at room temperature. This means the valve is designed to safely handle operating pressures up to this level, which is suitable for typical ballast water system pressures. -
Are the flanges compatible with international standards like ANSI?
The valve is manufactured to the Chinese GB/T standard for flanged connections. While dimensions may differ, it is commonly used in systems designed to GB/T or compatible specifications. For projects requiring specific flange standards, please inquire about customization possibilities. -
Is the valve suitable for manual operation on larger sizes (e.g., DN300)?
While the valve can be operated manually via the handwheel, for larger sizes like DN250 and DN300 where higher torque is needed, we strongly recommend selecting the optional gearbox operator for easier and safer operation. -
What is the lead time for an order of these valves?
Lead times vary based on order quantity, specific sizes required, and current production schedule. Standard sizes may have shorter lead times. Please contact our sales team with your detailed requirements for an accurate delivery estimate. -
Do you provide any other material options for the valve body?
Our standard offering for this marine application is cast steel with epoxy coating. Other material grades or coatings for different media or specifications may be available upon request for customized orders. -
What kind of testing is performed on the valves before shipment?
As part of our ISO9001 quality procedures, valves undergo standard factory tests which typically include shell strength tests and seat leakage tests to ensure pressure integrity and sealing performance meet specification requirements.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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