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Help CenterGB/T3036-94 Lug Type Butterfly Valve for Marine Ballast Water Lines
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As a leading manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance GB/T3036-94 Lug Type Butterfly Valve, engineered specifically for the demanding environment of marine ballast water systems. Since our establishment in 2016, we have dedicated ourselves to producing reliable fluid control solutions, exporting over US$1 million worth of products annually to global markets. This valve is designed to meet the stringent requirements of shipbuilding and marine engineering, offering a robust and leak-proof solution for critical ballast water management.
Our lug-type butterfly valve stands out for its exceptional durability and operational efficiency. The lug-style design allows for easy installation and removal from the pipeline without disturbing adjacent components, a crucial feature for maintenance in confined marine spaces. Manufactured in compliance with the GB/T3036-94 standard, it guarantees dimensional accuracy, material integrity, and performance consistency. The valve's design ensures bi-directional shut-off capability, making it perfectly suited for the bi-directional flow often encountered in ballast water lines.
Key Features & Technical Advantages:
- Superior Sealing Performance: Features a precision-machined disc and a resilient seat (available in EPDM, NBR, or PTFE) that ensures bubble-tight sealing, even after prolonged cycles of operation, preventing ballast water leakage and protecting marine ecosystems.
- Corrosion Resistance: Available in various material combinations like ductile iron epoxy-coated or stainless steel (SS304/SS316), the valve offers excellent resistance to seawater corrosion, saline atmospheres, and other harsh marine conditions.
- Low Torque Operation: The optimized disc design and high-quality bearing system result in low operating torque, reducing the effort required for manual operation and allowing for the use of smaller, more cost-effective actuators.
- Versatile Actuation Options: Can be fitted with a manual lever, gear operator, electric actuator, or pneumatic actuator, providing flexibility to integrate with different ship control systems.
- Compact & Lightweight Design: Compared to gate or globe valves, the butterfly valve offers a significantly more compact structure and lighter weight, saving valuable space and weight onboard vessels.
- Long Service Life: Robust construction and wear-resistant components ensure a long operational lifespan with minimal maintenance, reducing total cost of ownership.
Technical Specifications:
| Parameter | Specification |
| Design Standard | GB/T3036-94 |
| Connection Type | Lug (Threaded Holes) |
| Size Range | DN50 (2") to DN600 (24") |
| Pressure Rating | PN10, PN16, PN25 (Class 150, 300) |
| Body Material | Cast Iron, Ductile Iron, Stainless Steel |
| Disc Material | Cast Iron, Ductile Iron, Stainless Steel, Aluminum Bronze |
| Seat Material | EPDM, NBR, PTFE (Customizable) |
| Temperature Range | -10°C to +120°C (Depends on seat material) |
| Operation | Lever, Gear, Electric Actuator, Pneumatic Actuator |
Benefits for Your Marine Projects:
- Enhanced System Reliability: Provides dependable isolation and control of ballast water, crucial for vessel stability and safety.
- Simplified Maintenance: The lug design enables easy valve replacement, minimizing downtime during shipyard periods.
- Compliance Ready: Manufactured to recognized standards, supporting compliance with marine regulations for ballast water systems.
- Cost-Effective Solution: Offers an optimal balance of performance, durability, and price, delivering strong value for shipowners and builders.
Backed by our ISO9001-certified quality management system and years of manufacturing expertise, you can trust the reliability of every valve we produce. Our products are shipped globally from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, reaching customers across North America, Europe, Asia, Africa, and Oceania. This proven global supply chain ensures timely delivery to your project sites. Choose Shanghai Zhibang's GB/T3036-94 Lug Butterfly Valve for a robust, efficient, and trustworthy component in your marine ballast water piping system. Contact us today for a detailed quotation or to discuss your specific requirements.
Frequently Asked Questions (FAQ):
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Q: What is the main advantage of a lug-type butterfly valve over a wafer-type for ballast water lines?
A: The lug-type design features threaded lugs (or ears) on both sides of the valve body. This allows the valve to be bolted directly between two pipe flanges without needing long through-bolts, making it a "dead-end service" valve. It can be installed at the end of a pipeline or easily removed without dismantling the entire line, which is highly advantageous for maintenance in marine systems.
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Q: Is this valve suitable for seawater applications?
A: Yes, absolutely. We offer material options specifically for seawater service. Selecting a body and disc material like stainless steel (SS316) or nickel-aluminum bronze, combined with a seawater-resistant seat like EPDM, ensures excellent corrosion resistance and longevity in direct contact with seawater.
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Q: Can this valve be operated remotely on a ship?
A: Yes. While it comes standard with a manual lever or gear operator, it is designed to be easily fitted with electric or pneumatic actuators. This enables remote operation and integration into the ship's centralized control system, which is a common requirement for modern ballast water management.
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Q: What pressure classes do you offer for marine applications?
A: Our valves are typically available in pressure ratings of PN10, PN16, and PN25 (approximately equivalent to Class 150 and Class 300). The appropriate rating should be selected based on the specific design pressure of your ballast water system.
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Q: Do you provide certifications for the materials used?
A: As an ISO9001-certified manufacturer, we maintain strict material traceability. Material test certificates (MTC) for the body, disc, and other primary components are available upon request to support your project documentation and classification society approvals.
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Q: How does the GB/T3036-94 standard relate to other international standards?
A: GB/T3036-94 is a Chinese national standard for lug-type and wafer-type butterfly valves. Its dimensional and performance requirements are generally compatible with widely recognized international standards like ISO 5752, facilitating its use in global marine projects. Specific dimensional comparisons can be provided.
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Q: What is the typical delivery time for an order?
A: Delivery time depends on the order quantity, size, material specification, and actuation choice. For standard configurations, we often have stock or can deliver within a few weeks. We ship from multiple ports in China to ensure efficient logistics to your destination.
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Q: Can you provide customized valves for specific ship designs?
A: Yes, customization is a key part of our service. We can work with you on non-standard sizes, special material combinations, extended shafts for insulated lines, specific paint coatings, or other modifications to meet the exact specifications of your vessel's design.
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