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Gear Operated Butterfly Valve for Marine Seawater Pipelines, DNV Approved, Meets GB/T3036
Product Spotlights
DNV-approved and GB/T3036 compliant gear-operated butterfly valve specifically engineered for corrosive marine seawater pipelines. Features corrosion-resistant materials, precise multi-turn gear control for safe operation, robust flanged connections, and customizable specs. Ensures regulatory compliance, enhances system reliability, and reduces long-term maintenance costs in maritime applications.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, Marine Seawater Pipelines
Operation Type:
Gear Operated
Approval Standard:
DNV Approved, Meets GB/T3036
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine Seawater Pipelines
Operation Type
Gear Operated
Approval Standard
DNV Approved, Meets GB/T3036
Valve Type
Butterfly Valve
Material (Typical)
Cast Iron, Stainless Steel, Duplex Steel
Sealing Type
Rubber, PTFE, EPDM
Connection Type
Flanged
Size Range
DN50 to DN600 (customizable)
Pressure Rating
PN10 to PN16 (customizable)
Temperature Range
-20°C to +120°C (depending on seal)
As a dedicated manufacturer since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd specializes in producing high-performance valves for demanding industrial applications. Our Gear Operated Butterfly Valve for Marine Seawater Pipelines represents our commitment to engineering robust solutions that withstand harsh environments. Designed specifically for seawater pipeline systems on ships and offshore platforms, this valve combines reliable gear operation with DNV approval and compliance with GB/T3036 standards, ensuring safety, durability, and seamless integration into marine fluid control networks.
Core Product Features & Technical Advantages:
- Optimized Gear Drive Mechanism: The gear operator provides precise and effortless control, even under high pipeline pressures. It offers multiple turns for fine adjustment, enhancing operational safety and reducing the risk of sudden actuation compared to simple lever handles.
- Marine-Grade Material Construction: The valve body and disc are typically constructed from corrosion-resistant materials such as cast iron with protective coatings, stainless steel (316/316L), or duplex steel, specifically chosen to combat the corrosive nature of seawater.
- High-Performance Sealing System: Utilizes specialized sealing materials like EPDM, PTFE, or Nitrile rubber to ensure a tight seal against seawater, preventing leakage and maintaining system integrity over long service periods.
- DNV Approval & GB/T3036 Compliance: This dual compliance is critical for marine applications. DNV approval signifies meeting the stringent requirements of Det Norske Veritas for maritime equipment, while GB/T3036 ensures adherence to relevant Chinese national standards for butterfly valves, providing confidence in quality and safety.
- Robust Flanged Connection: Designed with standard flanged ends (e.g., ANSI, DIN, JIS), facilitating secure and leak-free installation into existing seawater pipeline networks.
- Compact Design & Low Flow Resistance: The butterfly valve design offers a compact profile, saving space in crowded marine engine rooms. When fully open, the disc presents minimal obstruction, ensuring efficient flow with low pressure drop.
Technical Specifications Overview:
| Parameter | Typical Range / Specification |
| Size (Nominal Diameter) | DN50, DN80, DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600 |
| Pressure Rating (PN) | PN10, PN16 (Higher ratings available upon request) |
| Body Material | Cast Iron, Stainless Steel 316/316L, Duplex Steel |
| Disc Material | Stainless Steel, Coated Cast Iron, Duplex Steel |
| Seal Material | EPDM, PTFE, NBR (Nitrile) for seawater compatibility |
| Operating Temperature | -20°C to +120°C (dependent on seal material selection) |
| Operation Type | Gear Operator (Worm Gear type) |
| Connection Standard | Flanged (ANSI, DIN, JIS, GB standards customizable) |
Benefits for Your Marine Project:
- Enhanced System Reliability: The gear operation and corrosion-resistant build significantly reduce failure risks in critical seawater systems, such as cooling, ballast, or firefighting lines, contributing to overall vessel safety.
- Simplified Maintenance & Operation: The gear drive allows for easier opening/closing, even in stiff conditions, reducing operator strain. The design often facilitates easier seal replacement compared to some other valve types.
- Regulatory Compliance Assurance: With DNV approval and GB/T3036 compliance, integrating this valve simplifies the certification process for new builds or retrofits, saving time and avoiding compliance hurdles.
- Long Service Life & Cost Efficiency: Resistance to seawater corrosion extends valve lifespan, lowering long-term replacement and maintenance costs. The efficient flow design also helps optimize pump energy consumption.
- Flexible Configuration: We offer customization in sizes, materials, flange standards, and seal types to match your specific pipeline design and seawater chemistry.
Frequently Asked Questions (FAQ):
-
What does DNV approval mean for this valve?
DNV approval indicates that the valve has been assessed and certified by Det Norske Veritas, a leading international maritime classification society, to meet their specific standards for materials, design, and performance in marine environments. This is often a mandatory requirement for equipment used on classified vessels. -
Can this valve be used for other fluids besides seawater?
Yes, depending on the selected material configuration. While optimized for seawater, valves with appropriate seals and materials (e.g., PTFE seals, stainless steel body) can handle various chemicals, freshwater, or other industrial fluids within the specified temperature and pressure ranges. -
Is the gear operator suitable for automated control?
The gear-operated version is primarily for manual control. However, it can be adapted for automation by replacing the gear operator with an actuator (electric, pneumatic, or hydraulic). We can provide valves configured for actuation upon request. -
How does the gear operation compare to a simple lever handle?
The gear operator provides a multi-turn operation, allowing for finer control of the disc position and requiring less force to open or close, especially in larger sizes or under higher pressures. It also typically includes a locking mechanism for safety. -
What flange standards are available?
We commonly produce valves with ANSI, DIN, JIS, or GB flange standards. The specific standard can be customized based on your pipeline design requirements. Please specify your needed flange standard when inquiring. -
What is the typical delivery time for a customized order?
For standard sizes and materials within our catalog, delivery can be relatively quick. For fully customized specifications, the lead time depends on the complexity and quantity. Our manufacturing process under ISO9001 ensures efficient production, and we can provide estimated timelines upon order confirmation. -
Do you provide documentation like certificates and manuals?
Yes. Each valve shipment typically includes relevant documentation, which may include material certificates, DNV approval certificates (for approved models), test reports, and installation/maintenance manuals, depending on the order specifications. -
What maintenance is recommended for this valve in seawater service?
Regular inspection of the external gear mechanism for corrosion and lubrication is advised. Internally, periodic checking of the seal integrity is recommended based on service conditions. The specific maintenance interval depends on operating frequency and seawater quality.
Shanghai Zhibang Valve Manufacture Co., Ltd backs its products with a solid foundation of experience and quality systems. Operating under an ISO9001 certified quality management system since our establishment in 2016, we ensure consistent manufacturing standards. Our annual export value ranging between US$1 Million to US$1.5 Million demonstrates our active engagement and reliability in the global market, serving clients across North America, South America, Europe, Asia, Africa, and Oceania. We ship from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring flexible and efficient logistics. This Gear Operated Butterfly Valve is engineered to deliver dependable performance in the challenging marine environment, offering a combination of regulatory compliance, operational ease, and durability. Contact us to discuss how this valve can meet your specific seawater pipeline requirements and to receive detailed quotations and technical support.
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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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