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Home > Industrial Equipment & Components > Valve > Butterfly Valve > Full Lug Marine Butterfly Valve With EPDM Liner for Shipboard Piping Systems

Full Lug Marine Butterfly Valve With EPDM Liner for Shipboard Piping Systems

Full Lug Marine Butterfly Valve With EPDM Liner for Shipboard Piping Systems thumbnail-3

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Full Lug Marine Butterfly Valve With EPDM Liner for Shipboard Piping Systems photo-3

Full Lug Marine Butterfly Valve With EPDM Liner for Shipboard Piping Systems photo-4

Full Lug Marine Butterfly Valve With EPDM Liner for Shipboard Piping Systems photo-5

Product Spotlights

Full lug design ensures secure bolt-through installation for enhanced stability in shipboard systems. EPDM liner provides reliable sealing and resistance to seawater, oils, and various marine fluids. Available in a range of sizes (DN50-DN600) and materials (cast iron, ductile iron, stainless steel optional) with manual or gear operation. Manufactured under ISO9001 quality system, offering a durable, cost-effective solution for marine piping applications like ballast, cooling, and general service lines.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Application:

Other, Shipboard Piping Systems

Type:

Full Lug Butterfly Valve

Liner Material:

EPDM (Ethylene Propylene Diene Monomer)

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Application Other, Shipboard Piping Systems

Type Full Lug Butterfly Valve

Liner Material EPDM (Ethylene Propylene Diene Monomer)

Body Material Cast Iron / Ductile Iron / Stainless Steel (Optional)

Disc Material Cast Iron / Stainless Steel (Optional)

Connection Type Flanged (Full Lug Design)

Operation Manual or Gear Operated

Size Range DN50 to DN600 (Customizable)

Pressure Rating PN10 / PN16 (Standard)

Certification ISO9001 Quality Management System

Shanghai Zhibang Valve Manufacture Co., Ltd., a dedicated manufacturer established in 2016 with ISO9001 certified quality management, proudly introduces our Full Lug Marine Butterfly Valve with EPDM Liner. Engineered specifically for demanding shipboard piping applications, this valve offers a robust and reliable solution for fluid control on vessels. Our years of experience exporting to global markets, including North America, Europe, Southeast Asia, and beyond, have honed our understanding of marine industry requirements, leading to the development of this high-performance valve designed for durability, ease of operation, and maintenance in maritime environments.

The core of this valve is its Full Lug design. Unlike wafer-type butterfly valves, the full lug body features integral flanges with bolt holes, allowing it to be installed between two flanges using bolts through the valve body itself. This design provides superior structural integrity, eliminates the need for separate flange adapters in many cases, and offers a more secure connection, which is crucial for piping systems subject to vibration and movement on ships. Combined with a high-quality EPDM (Ethylene Propylene Diene Monomer) liner, the valve ensures excellent sealing performance and resistance against a wide range of fluids commonly found in marine systems.

Key Features & Technical Advantages:

Full Lug Body Construction: Provides a sturdy, bolt-through installation method for enhanced connection security and stability, ideal for shipboard systems.
EPDM Rubber Liner: Offers superior sealing, flexibility, and resistance to seawater, freshwater, mild chemicals, oils, and many other fluids. EPDM is known for its good temperature tolerance and aging resistance.
Versatile Material Options: The valve body is typically available in cast iron or ductile iron for standard applications, with stainless steel options available upon request for corrosive environments. The disc material can be matched accordingly.
Manual or Gear Operation: Can be supplied with a standard hand lever for smaller sizes or a gearbox operator for larger diameters or higher torque requirements, facilitating easier operation.
Bi-Directional Flow Capability: Designed to handle flow in both directions effectively.
Compact Design & Light Weight: Compared to many other valve types, butterfly valves offer a relatively compact profile and lower weight, beneficial for space-constrained shipboard installations.
Easy Maintenance: The design often allows for liner replacement without removing the valve body from the line, simplifying maintenance procedures.

Technical Specifications (Standard Range):

Parameter	Details / Range
Size (Nominal Diameter)	DN50 (2"), DN80 (3"), DN100 (4"), DN150 (6"), DN200 (8"), DN250 (10"), DN300 (12"), DN350 (14"), DN400 (16"), DN450 (18"), DN500 (20"), DN600 (24") – Custom sizes available.
Pressure Rating	PN10 (10 bar) / PN16 (16 bar) are standard. Higher ratings can be customized.
Face-to-Face Dimensions	Complies with international standards (e.g., ISO, DIN). Specific dimensions provided per size.
Flange Standards	Can be manufactured to match common standards such as ANSI, DIN, JIS, GB, etc., upon request.
Temperature Range (EPDM Liner)	Typically suitable for -20°C to +120°C fluid temperatures. Specific application conditions should be confirmed.
Operation Method	Manual lever (for sizes up to DN300 typically) or Worm Gear Operator (for larger sizes or high torque).

Benefits for Your Shipboard Systems:

Enhanced Safety & Reliability: The full lug design provides a secure, bolt-through connection that reduces the risk of leakage or disconnection under dynamic ship conditions.
Long Service Life: The combination of robust body materials and a durable EPDM liner ensures resistance to corrosion and wear, extending valve lifespan.
Cost-Effective Solution: Butterfly valves often offer a lower initial cost and simpler installation compared to other valve types like gate valves, while the full lug design adds value without significant cost increase.
Simplified Installation & Maintenance: The design facilitates easier installation between flanges, and potential in-line liner replacement reduces downtime.
Flexibility for Various Fluids: The EPDM liner's compatibility with a range of fluids makes this valve suitable for ballast, cooling, fuel oil service (for certain types), freshwater, and other general shipboard piping applications.

Shanghai Zhibang Valve operates under an ISO9001 Quality Management System, ensuring consistent manufacturing standards and product reliability. With an annual export value ranging between US$1 Million and US$1.5 Million, we have established a strong presence in key marine markets worldwide, including North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, and Europe. Our products are shipped from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring efficient logistics. This valve represents our commitment to providing marine engineers and shipbuilders with a dependable, high-quality component that meets the rigorous demands of onboard piping. For a valve that combines secure construction, proven sealing technology, and manufacturer-backed quality, contact us for specifications, pricing, or to discuss your specific application requirements.

Frequently Asked Questions (FAQ)

Q: What is the main advantage of a "Full Lug" design over a "Wafer" design for marine butterfly valves?
A: The Full Lug design features integral flanges with bolt holes on the valve body. This allows the valve to be bolted directly between two pipe flanges, providing a more secure and rigid connection. This is particularly beneficial in shipboard systems where vibration, movement, and pressure fluctuations are common, as it reduces the risk of connection failure compared to wafer valves which rely on the pipeline flanges and bolts for clamping.
Q: Is the EPDM liner suitable for seawater applications?
A: Yes, EPDM rubber is generally well-suited for handling seawater, freshwater, and many other aqueous solutions. It offers good resistance to corrosion and degradation in such environments. However, for specific chemical compositions or extreme temperatures, it's always recommended to confirm material compatibility with your actual service conditions.
Q: Can this valve be used for fuel oil lines on ships?
A: EPDM can be compatible with certain oils and fuels. Its suitability for specific fuel oil services (e.g., diesel, marine diesel oil) should be verified based on the oil's properties and temperature. Alternative liner materials like NBR may be available upon request for different fluid compatibility requirements.
Q: What are the standard pressure ratings available?
A: Our standard Full Lug Marine Butterfly Valves are typically rated for PN10 (10 bar/145 psi) or PN16 (16 bar/232 psi). Higher pressure ratings can be engineered as a custom option depending on size and material specifications.
Q: Do you offer valves with different flange standards (like ANSI, DIN, JIS)?
A: Yes. While we produce valves to common international and national standards, we can manufacture the flange dimensions and bolt hole patterns to match specific standards such as ANSI, DIN, JIS, or GB upon request. Please specify your required flange standard during inquiry.
Q: Is the valve available with an actuator for automated control?
A: The valve design can be adapted for actuation. While our standard offering includes manual lever or gear operation, we can provide valves prepared for the installation of electric, pneumatic, or hydraulic actuators. Actuator selection and supply can be discussed as a separate project requirement.
Q: What is the typical delivery time for these valves?
A: Delivery time depends on the size, material specification, quantity, and any customization required. For standard sizes and materials in moderate quantities, lead times can be relatively short. We ship from ports like Shanghai, Guangzhou, Hong Kong, and Beijing, which facilitates timely export. Specific timelines will be provided upon order confirmation.
Q: Does your company provide technical support or installation guidance?
A: Yes, as a manufacturer with ISO9001 certification and experience in the marine sector, we provide technical datasheets, installation manuals, and can offer guidance on proper installation and maintenance practices for our valves. Our support aims to ensure optimal performance in your application.