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OEM Factory Producing Marine Gate Valves to CB/T3591 for Bilge and Ballast Lines
Product Spotlights
OEM Marine Gate Valves compliant with CB/T3591 standard, designed for bilge and ballast line reliability. Features robust construction in cast iron, steel, bronze, or stainless steel. Offers manual, electric, or hydraulic operation with flanged connections from DN50 to DN500. Ensures tight sealing, corrosion resistance, and efficient flow control for enhanced marine system safety and reduced maintenance.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Cast Iron, Cast Steel, Bronze, Stainless Steel
Application:
Other, Bilge Lines
Standard:
Other, CB/T3591
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Cast Iron, Cast Steel, Bronze, Stainless Steel
Application
Other, Bilge Lines
Standard
Other, CB/T3591
Connection Type
Flanged Connection
Operation Type
Manual, Hydraulic, Electric Actuation
Size Range
DN50 to DN500
Pressure Rating
PN10 to PN25
Design
Rising Stem, Non-Rising Stem Options
Temperature Range
Suitable for standard marine environments
Certification
ISO9001 Quality Management System
Welcome to Shanghai Zhibang Valve Manufacture Co., Ltd., a professional manufacturer established in 2016 specializing in high-performance marine valves. We proudly present our OEM-produced Marine Gate Valves, meticulously engineered to meet the rigorous CB/T3591 standard for bilge and ballast lines. With an annual export value ranging from US$1 million to US$1.5 million, we serve a global clientele across continents including North America, Europe, Southeast Asia, and beyond. Our commitment is to provide durable, reliable, and fully compliant valve solutions that ensure the safety and efficiency of your marine piping systems.
Our Marine Gate Valves are designed for critical applications in shipboard piping, specifically for controlling the flow in bilge and ballast systems. These valves are built to withstand harsh marine environments, offering exceptional sealing performance and long service life. The core value we deliver is uncompromising reliability under pressure, ensuring that your vessel's essential water-handling systems operate flawlessly.
Detailed Product Features & Technical Advantages:
- Robust Construction: Manufactured from premium materials such as cast iron, cast steel, bronze, or stainless steel, chosen based on specific service conditions including fluid compatibility and corrosion resistance.
- Precision Engineering to CB/T3591: Every valve is produced in strict adherence to the Chinese CB/T3591 standard for marine gate valves, guaranteeing dimensional accuracy, performance criteria, and interchangeability.
- Superior Sealing Mechanism: Features a wedge or parallel slide gate design that provides a tight, bubble-tight seal when closed, effectively preventing leakage in bilge and ballast lines.
- Versatile Operation: Available in manual (handwheel), electric actuator, or hydraulic actuator configurations to suit different levels of automation and accessibility requirements on board.
- Flanged Connection: Standard flanged ends ensure easy, secure, and leak-proof installation into the pipeline, conforming to common marine piping specifications.
- Full Port Design: Offers minimal flow resistance when fully open, allowing for efficient pumping and drainage, which is crucial for bilge and ballast operations.
- Corrosion Protection: Surface treatments like painting, galvanizing, or specific coatings are applied based on material to enhance durability against seawater and atmospheric corrosion.
- Rising & Non-Rising Stem Options: Provides flexibility for space-constrained installations; the rising stem indicates valve position visually, while the non-rising stem is ideal for limited vertical space.
Key Technical Specifications:
| Specification | Details |
| Standard | CB/T3591 |
| Nominal Diameter (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500 |
| Pressure Rating (PN) | 10, 16, 25 |
| Body Material | Cast Iron, Cast Steel, Bronze, Stainless Steel (304/316) |
| Seat & Disc Material | Bronze, Stainless Steel, or Resilient Seated (optional) |
| Connection | Flanged (RF, FF as per standard) |
| Operation | Manual Handwheel, Electric Actuator, Hydraulic Actuator |
| Temperature Range | -20°C to +200°C (depending on material and seal) |
| Applicable Fluid | Seawater, Bilge Water, Ballast Water, Oily Water |
Benefits for Our Clients:
- Enhanced System Safety: Reliable shut-off protects against flooding and ensures proper ballast control, contributing to vessel stability and safety.
- Reduced Maintenance: Durable construction and quality materials minimize wear, leading to lower lifecycle costs and less downtime for repairs.
- Regulatory Compliance: CB/T3591 compliance simplifies approval processes for shipyards and vessel operators, especially in markets recognizing this standard.
- Operational Efficiency: Smooth operation and full bore design reduce pressure loss, improving the efficiency of pumping systems.
- OEM Flexibility: As a manufacturer, we offer customization in materials, dimensions (within range), actuators, and branding to meet specific project requirements.
Our operations are backed by an ISO9001 certified quality management system, ensuring consistent product quality from raw material inspection to final testing. We ship from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, facilitating smooth logistics to our main markets worldwide. Choosing Shanghai Zhibang means partnering with a proven supplier dedicated to marine valve excellence. Our valves are engineered not just to meet standards but to exceed expectations in real-world maritime applications. For reliable performance in your bilge and ballast systems, contact us today to discuss your OEM requirements or request a detailed quotation.
Frequently Asked Questions (FAQ):
-
Q: What is the CB/T3591 standard, and why is it important for marine gate valves?
A: CB/T3591 is a Chinese national standard specifically for marine forged steel gate valves. It defines requirements for design, materials, dimensions, pressure ratings, and testing. Compliance ensures the valve is suitable for marine service, offers reliability, and is often required or recognized by shipyards and classification societies. -
Q: Can these valves be used for fluids other than seawater, like oily bilge water?
A: Yes. The material selection is key. For standard seawater and bilge water, cast steel or bronze is common. For more corrosive or oily mixtures, stainless steel (e.g., 316) is recommended. Please specify your fluid characteristics for accurate material advice. -
Q: What are the main differences between rising stem and non-rising stem designs?
A: A rising stem valve's stem moves up and down with the gate, providing a visual indication of whether the valve is open or closed. A non-rising stem's threads are inside the valve body, so the stem does not move vertically, saving space. The choice depends on available installation space and the need for visual position indication. -
Q: Do you provide valves with electric or hydraulic actuators?
A: Yes. We offer a range of actuation options. Manual handwheel operation is standard. Electric or hydraulic actuators are available as optional accessories for remote or automated control. Please specify your required torque, voltage, or pressure parameters. -
Q: What is your typical lead time for OEM orders?
A: Lead time varies based on order quantity, material specifications, and customization level. Standard configurations typically have shorter lead times. We provide estimated timelines upon receipt of your detailed inquiry and work to meet project schedules. -
Q: Are your valves suitable for both newbuilding and retrofit projects?
A: Absolutely. Our valves, manufactured to the CB/T3591 standard, are designed for easy integration into both new ship construction and existing vessel retrofit or repair projects due to their standardized flanged dimensions. -
Q: What kind of testing do your valves undergo before shipment?
A: Each valve undergoes rigorous testing, including shell strength tests (hydrostatic pressure), seat leakage tests, and operational tests (opening/closing torque checks) to ensure it meets performance and safety standards. -
Q: How do you ensure protection against corrosion in marine environments?
A: We employ various methods: selecting inherently corrosion-resistant materials (bronze, stainless steel), applying protective coatings (epoxy paints, galvanizing) on carbon steel bodies, and using appropriate seal materials. The specific protection is tailored to the valve material and customer's service environment.
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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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