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Home > Industrial Equipment & Components > Valve > Butterfly Valve > Marine Lug Type Butterfly Valve DN400 DN600 With Ductile Iron Body and EPDM Seal
Marine Lug Type Butterfly Valve DN400 DN600 With Ductile Iron Body and EPDM Seal
Product Spotlights
Marine-grade lug butterfly valve featuring a durable ductile iron body and reliable EPDM seal for tight shut-off in seawater applications. Designed for DN400/DN600 pipelines, it offers corrosion resistance, easy maintenance with its lug design, and versatile manual or automated actuation options. Ideal for shipboard ballast, cooling, and fire-fighting systems, ensuring safe and efficient fluid control.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine
Body Material:
Ductile Iron
Seal Material:
EPDM
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine
Body Material
Ductile Iron
Seal Material
EPDM
Connection Type
Lug Type
Nominal Diameter (DN)
DN400, DN600
Operation
Manual Lever, Gearbox (Optional)
Pressure Rating
PN10, PN16 (Standard)
Temperature Range
-20°C to +120°C (with EPDM)
Standards
ISO 9001 Certified Manufacturing
Design Standard
API 609, MSS SP-67
As a professional manufacturer with ISO 9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable fluid control solutions for demanding marine environments. Our Marine Lug Type Butterfly Valves in DN400 and DN600 sizes are engineered with a ductile iron body and EPDM seal, offering exceptional durability and leak-tight performance against seawater, ballast water, and various shipboard fluids. These valves are designed to meet the rigorous standards of the global maritime industry, ensuring safe and efficient operation on vessels and offshore platforms.
Our valves are built to withstand the harsh conditions at sea. Key features and advantages include:
- Superior Corrosion Resistance: The ductile iron body provides excellent strength and impact resistance, while special surface coatings (epoxy or other optional treatments) offer enhanced protection against saltwater corrosion.
- Reliable Sealing Performance: The EPDM (Ethylene Propylene Diene Monomer) rubber seat ensures a bubble-tight seal across a wide temperature range, from -20°C to +120°C, making it suitable for most marine applications.
- Robust Lug Design: The lug-type connection allows for easy installation and removal from piping systems without disassembling the entire line, which is crucial for maintenance in confined shipboard spaces. The lugs are integrally cast with the body for maximum strength.
- Versatile Actuation Options: The valve can be operated via a manual lever for quick on/off control or equipped with a gearbox for higher torque applications. It is also prepared for the future integration of electric or pneumatic actuators.
- Low Maintenance & Long Service Life: The simple yet robust design minimizes moving parts, reducing the need for frequent maintenance. The high-quality materials ensure a long operational lifespan even under constant exposure to marine elements.
Technical Specifications:
| Parameter | Specification |
| Product Type | Lug Type Butterfly Valve |
| Body Material | Ductile Iron (with optional coatings) |
| Disc Material | Ductile Iron, Stainless Steel (Optional) |
| Seat / Seal Material | EPDM Rubber |
| Stem Material | Stainless Steel (Standard) |
| Nominal Diameter (DN) | DN400, DN600 (Other sizes available upon request) |
| Pressure Rating (PN) | PN10, PN16 (Standard) |
| Temperature Range | -20°C to +120°C (with EPDM seat) |
| Connection Standard | Designed to fit between ANSI/ASME flanges |
| Operation | Manual Lever, Worm Gear Operator (Optional) |
| Design Standard | API 609, MSS SP-67 |
| Face-to-Face Dimension | Complies with relevant international standards |
Benefits for Your Marine Projects:
- Enhanced System Safety: The reliable sealing prevents fluid leakage, protecting critical ship systems and the marine environment.
- Cost-Effective Solution: Compared to gate or globe valves, butterfly valves offer a more compact and lightweight design, reducing installation space and overall system cost.
- Quick Operation & Good Flow Control: The quarter-turn operation allows for fast opening and closing, facilitating efficient process control for ballast, cooling, and fire-fighting systems.
- Global Compliance: Manufactured under an ISO 9001 quality management system, our valves are designed to meet international marine standards, supporting your projects worldwide.
With an annual export value ranging between US$1 Million and US$1.5 Million, Shanghai Zhibang has established a strong reputation across major markets including North America, Southeast Asia, Europe, and the Middle East. Our products are shipped from key ports like Shanghai, Guangzhou, and Hong Kong, ensuring timely delivery to global clients. Choosing our Marine Lug Butterfly Valves means selecting a product backed by professional manufacturing expertise, consistent quality control, and a commitment to serving the demanding needs of the marine industry. Contact us today to discuss how these durable valves can enhance the reliability of your fluid handling systems.
Frequently Asked Questions (FAQ)
-
Q: What are the main applications for this lug-type butterfly valve on ships?
A: These valves are commonly used for seawater cooling lines, ballast water systems, fire-fighting systems, fuel oil transfer lines (with compatible seals), bilge and drain systems, and general service water lines onboard vessels and offshore platforms. -
Q: Why is ductile iron chosen for the valve body in marine use?
A: Ductile iron offers a superior combination of high tensile strength, good impact resistance, and excellent castability. It provides the necessary durability to withstand pressure, vibration, and potential mechanical shocks encountered in marine environments, often at a more cost-effective point than stainless steel. -
Q: Can the EPDM seal handle seawater and other chemicals?
A: Yes, EPDM rubber is known for its outstanding resistance to seawater, ozone, weathering, and a wide range of mild chemicals, acids, and alkalis. It is a preferred material for many marine sealing applications. For specific aggressive chemicals, alternative seal materials like Viton® can be explored. -
Q: What is the advantage of a lug-type design over a wafer-type design?
A: A lug-type valve has threaded inserts (lugs) on both sides, allowing it to be bolted directly to the pipeline flanges. This design permits the valve to be installed at the end of a line or easily removed for maintenance without dismantling the entire pipeline section, which is a significant advantage in space-constrained marine installations. -
Q: Are these valves suitable for high-pressure applications?
A: The standard pressure ratings are PN10 and PN16 (10/16 bar), which are suitable for many marine system pressures. For higher pressure requirements, please consult our engineering team. The design can be customized, and different materials or pressure classes may be available upon request. -
Q: What actuation options are available besides the manual lever?
A: We offer worm gear operators for easier manual operation under higher torque conditions. The valves are also designed to be compatible with electric actuators and pneumatic actuators for remote or automated control systems, which is common in modern ship automation. -
Q: Do you provide certifications or test reports for these valves?
A: As an ISO 9001 certified manufacturer, we maintain strict quality control procedures. Standard factory test reports (such as shell test, seat test) are available. Specific marine classification society certifications (like ABS, DNV, LR, etc.) can be arranged upon request and project requirement. -
Q: What is the typical lead time for DN400 and DN600 sizes?
A: Lead times vary based on order quantity and specific configuration (actuation, coating). Generally, for standard configurations, we maintain a stock for popular sizes or can provide a production schedule. Please contact our sales team with your detailed requirements for an accurate delivery timeline.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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