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Home > Industrial Equipment & Components > Valve > Other Valves & Parts > Triple Eccentric Marine Butterfly Valve for Cargo Tank Isolation on Chemical Tankers

Triple Eccentric Marine Butterfly Valve for Cargo Tank Isolation on Chemical Tankers

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Triple Eccentric Marine Butterfly Valve for Cargo Tank Isolation on Chemical Tankers photo-3

Triple Eccentric Marine Butterfly Valve for Cargo Tank Isolation on Chemical Tankers photo-4

Triple Eccentric Marine Butterfly Valve for Cargo Tank Isolation on Chemical Tankers photo-5

Product Spotlights

Triple eccentric design ensures bubble-tight metal seal with minimal wear for long life. Corrosion-resistant materials (stainless steel/alloys) suit harsh chemical cargoes. Options include fire-safe features, extended neck for tank insulation, and multiple actuators. ISO9001 manufactured, globally exported for reliable cargo tank isolation on chemical tankers.

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

Key Specifications

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Type:

Triple eccentric butterfly valve

Application:

Cargo tank isolation on chemical tankers

Material:

Stainless steel, carbon steel, or alloy steel

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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
Company Profile
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Type Triple eccentric butterfly valve

Application Cargo tank isolation on chemical tankers

Material Stainless steel, carbon steel, or alloy steel

Size Range DN50 to DN600 (or as per customer requirements)

Design Standard Marine industry specifications (e.g., API, ASTM)

Sealing Mechanism Triple eccentric metal-to-metal seal

Operation Manual, gear, pneumatic, or electric actuator

Connection Type Flanged (e.g., ANSI, DIN, JIS)

Optional Features Fire-safe design, extended neck, locking device

Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a dedicated manufacturer specializing in high-performance industrial valves. With an annual export value reaching US$1 Million - US$1.5 Million and holding ISO9001 certification, we serve global markets including North America, South America, Europe, Asia, Africa, and Oceania. Our Triple eccentric marine butterfly valve for cargo tank isolation on chemical tankers represents our commitment to engineering excellence and safety. This valve is specifically designed to meet the stringent demands of chemical transportation, providing reliable, leak-proof isolation for cargo tanks, ensuring operational safety and protecting both the vessel and the environment.

The core value of this valve lies in its triple eccentric design, which fundamentally eliminates wear and ensures a durable, bubble-tight seal even under harsh marine conditions and corrosive chemical media. Unlike conventional butterfly valves, our design offers superior performance for critical isolation applications.

Key Features & Technical Advantages:

Triple Eccentric Geometry: The disc axis is offset from the seat axis in three planes. This design ensures that the sealing surfaces only contact at the final moment of closure, minimizing friction and wear throughout the operation cycle, leading to exceptionally long service life.
Metal-to-Metal Seal: Utilizes a precision-machined metal seat and disc for sealing. This is essential for handling a wide range of aggressive chemicals, high temperatures, and pressures where elastomeric seals would fail.
Corrosion-Resistant Materials: Constructed from materials like stainless steel (304, 316), carbon steel with protective coatings, or specialized alloys (e.g., Hastelloy) tailored to resist specific corrosive cargoes.
Bubble-Tight Shut-off: Engineered to achieve zero-leakage performance, which is mandatory for isolating hazardous or valuable chemicals in tanker cargo tanks.
Low Torque Operation: The eccentric design reduces operating torque, allowing for smoother actuation with manual gearboxes, pneumatic, or electric actuators, reducing operator effort and potential for damage.
Fire-Safe Design Option: Available with features that maintain sealing integrity in emergency fire scenarios, meeting relevant marine safety standards.
Extended Neck Design: Optional extended neck facilitates installation through tank insulation or double hull structures, a common requirement on chemical tankers.

Technical Specifications (Typical Range):

Parameter	Specification / Range
Size (Nominal Diameter)	DN50 - DN600 (2" - 24")
Pressure Rating	PN10 - PN16, Class 150 - Class 300 (customizable)
Temperature Range	-20°C to +250°C (depending on material)
Body Material	Stainless Steel, Carbon Steel, Alloy Steel
Disc Material	Same as body or coated/plated variants
Seat Material	Stainless Steel or specialty metal
Actuator Type	Manual (lever/gear), Pneumatic, Electric (available)
Connection Standard	ANSI, DIN, JIS, GB (flanged)
Design Standards	Complies with API, ASTM, marine industry norms

Benefits for Your Chemical Tanker Operations:

Enhanced Safety: Bubble-tight isolation prevents cross-contamination of cargoes and leakage, crucial for hazardous chemicals.
Longevity & Reduced Maintenance: The wear-minimizing design translates to fewer replacements and lower lifecycle costs.
Operational Reliability: Consistent performance under variable pressures and temperatures ensures process stability.
Material Compatibility: Tailored material selection protects against corrosion from specific acids, alkalis, solvents, or other cargoes.
Flexible Configuration: Available in various sizes, actuator options, and with special features (fire-safe, extended neck) to match your exact tank design.
Global Compliance: Manufactured under ISO9001, our valves are designed to meet international marine and industrial standards, facilitating smooth integration into your fleet.

Backed by our ISO9001 certified manufacturing processes and a proven track record of exporting to major markets worldwide—from North America and Europe to Southeast Asia and Africa—our triple eccentric marine butterfly valves are built with precision and reliability. Shipping from key ports like Shanghai, Guangzhou, Hong Kong, and Beijing ensures efficient logistics. For your chemical tanker's cargo tank isolation needs, choosing Shanghai Zhibang's valve means investing in a product that prioritizes safety, durability, and performance. Contact us today to discuss your specifications and receive a tailored solution that meets the highest standards of marine valve engineering.

Frequently Asked Questions (FAQ)

Q: What makes a "triple eccentric" design different from a standard butterfly valve?
A: A triple eccentric valve has its disc axis offset in three directions (radial, axial, and angular). This geometry ensures the disc only contacts the seat at the point of full closure, drastically reducing wear during operation and enabling a reliable metal seal, unlike standard valves where the disc rubs against the seat throughout movement.
Q: Is this valve suitable for all types of chemicals transported on tankers?
A: While the design is robust, material selection is key. We offer valves in stainless steel, coated carbon steel, and special alloys. By specifying the chemical media (e.g., acid type, concentration, temperature), we can recommend the most corrosion-resistant material for your application.
Q: Can this valve achieve zero leakage (bubble-tight shut-off)?
A: Yes. The primary purpose of the triple eccentric metal-seated design is to provide bubble-tight shut-off, which is a critical requirement for isolating cargo tanks to prevent mixing or leakage of hazardous or valuable liquids.
Q: What actuator options are available?
A: The valve can be operated manually via a lever or gearbox. For remote or automated control, we can supply it with pneumatic or electric actuators. The low torque requirement of the eccentric design makes it compatible with a wide range of actuator sizes.
Q: Does the valve come with fire-safe certification?
A: Fire-safe features are available as an option. These designs include secondary sealing mechanisms or materials that maintain isolation integrity in case of exposure to fire, meeting relevant marine safety protocols. Specific certification details can be provided upon request.
Q: What is the typical delivery time for these valves?
A: Delivery time depends on the specification, size, and quantity. Standard configurations may have shorter lead times. For customized orders (special materials, sizes, features), we provide a timeline upon receipt of your detailed requirements. Our multiple shipment ports facilitate timely delivery.
Q: Are your valves compatible with international flange standards?
A: Absolutely. We manufacture valves with flanges conforming to ANSI (ASME), DIN, JIS, GB, and other common standards to ensure compatibility with your tanker's piping system.
Q: How does the extended neck option work?
A: An extended neck (or extended stem) version has a longer stem section. This allows the valve body to be mounted inside the tank insulation layer or through a double hull structure, while the actuation mechanism remains accessible outside, a common installation method on chemical tankers.