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Home > Industrial Equipment & Components > Valve > Gate Valve > CB/T3591 Large Diameter Gate Valve for DN300 Shipboard Freshwater and Ballast Systems
CB/T3591 Large Diameter Gate Valve for DN300 Shipboard Freshwater and Ballast Systems
Product Spotlights
CB/T3591 standard marine gate valve for DN300 pipelines. Designed for reliable isolation in shipboard freshwater & ballast systems. Features robust cast steel/ductile iron construction, stainless steel trim, and bubble-tight sealing. Offers manual handwheel or optional gear operation. Customizable materials and pressure ratings (PN10/16/Class150). Reduces maintenance and lifecycle costs. ISO9001 certified manufacturer with global export experience.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
Other, CB/T3591
Application:
Other, Shipboard Freshwater and Ballast Systems
Product Type:
Gate Valve
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
Other, CB/T3591
Application
Other, Shipboard Freshwater and Ballast Systems
Product Type
Gate Valve
Nominal Diameter (DN)
300
Connection Type
Flanged (as per standard)
Body Material
Cast Steel / Ductile Iron (customizable)
Seat/Seal Material
Stainless Steel / Resilient (customizable)
Operation Type
Handwheel / Gearbox (optional)
Pressure Rating
PN10 / PN16 / Class150 (available upon request)
As a professional manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve is dedicated to providing reliable fluid control solutions for the global marine industry. Our CB/T3591 Large Diameter Gate Valve for DN300 applications is engineered specifically for the demanding environments of shipboard freshwater and ballast systems. This valve combines robust construction with precise engineering to ensure dependable isolation, long service life, and minimal maintenance, making it a trusted component for shipbuilders and operators worldwide.
Core Features & Technical Advantages:
- Standard Compliance & Design: Manufactured in strict accordance with the Chinese CB/T3591 standard for ship valves, ensuring compatibility and reliability for marine applications. The large diameter (DN300) design is optimized for high-flow freshwater and ballast transfer.
- Robust Construction & Materials: The valve body is typically crafted from high-grade cast steel or ductile iron, offering excellent resistance to corrosion and mechanical stress. Critical sealing components, such as the seat and gate, can be supplied in materials like stainless steel or resilient materials to match specific fluid compatibility and wear resistance requirements.
- Superior Sealing Performance: Features a precision-machined gate and seat interface that provides bubble-tight shut-off when fully closed, preventing leakage in critical ballast and freshwater lines. This ensures system integrity and operational safety.
- Durable & Low-Maintenance Operation: The design minimizes internal cavities where debris can accumulate. Coupled with a sturdy stem and packing gland assembly, it ensures smooth operation (via handwheel or optional gearbox) and reduces the frequency of maintenance interventions, even after prolonged periods of inactivity.
- Versatile Application Readiness: While designed for DN300 shipboard freshwater and ballast systems, its robust design makes it suitable for other onboard services requiring large-diameter isolation, such as cooling water or general service lines.
Detailed Technical Specifications:
| Parameter | Specification / Option |
| Product Standard | CB/T3591 |
| Nominal Diameter (DN) | 300 |
| Nominal Pressure (PN) | PN10, PN16, Class150 (Customizable) |
| Connection Type | Flanged (Dimensions as per CB/T3591 & related standards) |
| Body Material | Cast Steel WCB, Ductile Iron, Other grades available |
| Gate & Seat Material | Stainless Steel, Bronze, Resilient Seated options |
| Stem Material | Stainless Steel |
| Operation Mode | Handwheel (Standard), Gear Operator (Optional) |
| Temperature Range | -20°C to +200°C (Dependent on seat material) |
| Applicable Fluid | Fresh Water, Sea Water (Ballast), Non-aggressive liquids |
Benefits for Your Operations:
- Enhanced System Reliability: The valve's tight shut-off capability prevents cross-contamination between ballast and freshwater tanks, crucial for vessel stability and water management.
- Reduced Lifecycle Cost: Durable materials and design lower the risk of failure, decrease maintenance needs, and extend overhaul intervals, contributing to lower total cost of ownership.
- Global Compliance & Ease of Sourcing: Adherence to the recognized CB/T3591 standard simplifies procurement for shipyards and repair docks operating internationally, especially in markets familiar with Chinese marine standards.
- Flexible Configuration: We offer customization in pressure rating, material trim, and operation type (handwheel or gearbox) to fit your specific system design and operational preferences.
Trust & Commitment:
Shanghai Zhibang Valve, established in 2016, has grown into a trusted manufacturer with an annual export value ranging between US$1 Million and US$1.5 Million, serving a diverse clientele across North America, South America, Europe, Asia, Africa, and Oceania. Our operations are backed by an ISO9001 certification, ensuring consistent quality in every valve we produce. We support efficient global logistics with multiple shipment ports including Shanghai, Guangzhou, Hong Kong, and Beijing. Choosing our CB/T3591 DN300 Gate Valve means partnering with a proven supplier committed to quality, reliability, and meeting the stringent demands of the marine sector. Contact us today to discuss your requirements or request a detailed quotation.
Frequently Asked Questions (FAQ):
-
Q: Is this valve suitable for both freshwater and seawater (ballast) service?
A: Yes, it is specifically designed for shipboard freshwater and ballast systems. Material selections can be tailored to enhance corrosion resistance for seawater applications. -
Q: What is the main advantage of the CB/T3591 standard for this valve?
A: The CB/T3591 standard specifies requirements for marine valves, ensuring they meet the necessary dimensions, materials, pressure ratings, and testing protocols for reliable onboard use, which is recognized in many international shipbuilding and repair markets. -
Q: Can this DN300 valve be operated remotely or automatically?
A: This valve is primarily designed for manual operation via handwheel or gearbox. For automated actuation, it can be fitted with an electric or pneumatic actuator as a custom order. -
Q: What are the typical lead times for this product?
A: Lead times vary based on order quantity and specific configuration. Standard models may have shorter availability, while customized valves require additional manufacturing time. Please inquire for a precise schedule. -
Q: Do you provide documentation like test reports and certificates?
A: Yes, we provide necessary documentation including material certificates, pressure test reports (as per standard), and a certificate of conformity. Documentation packages can be customized upon request. -
Q: How does the sealing mechanism perform over time with potential sediment in ballast water?
A: The gate valve design, especially with resilient seated options, can handle minor particulates. However, for systems with heavy sedimentation, installing a strainer upstream is recommended to protect the valve seating surfaces and ensure long-term sealing integrity. -
Q: Are spare parts like gland packing or gaskets readily available?
A: Yes, we supply standard spare part kits for our valves. We recommend ordering critical spares with your initial purchase to ensure quick maintenance turnaround. -
Q: What is the warranty policy for this marine gate valve?
A: Our valves come with a standard warranty against manufacturing defects. The specific warranty period and terms are provided with the commercial contract and are based on the application and agreed specifications.
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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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