I-FLOW High-Performance Double Eccentric Butterfly Valves offer advanced engineering solutions designed to deliver precise and reliable flow control for critical applications in industries such as oil & gas, chemical processing, power generation, and marine systems. Commonly known as double eccentric or double offset butterfly valves, these valves provide robust performance with enhanced features that ensure safety, durability, and efficiency in high-pressure and hazardous environments.

What is a High-Performance Double Eccentric Butterfly Valve

A double eccentric butterfly valve is an advanced type of butterfly valve where the valve disc is offset from the shaft center in two directions, resulting in less contact between the disc and seat during operation. This unique design reduces wear and friction, allowing for a bubble-tight seal when the valve is fully closed, while maintaining efficient fluid flow when open. These valves are used in applications where durability, high pressure, and fire safety are critical.

Key Features of I-FLOW High-Performance Double Eccentric Butterfly Valves

Fireproof Structure: Built with fire-resistant materials, these valves provide additional protection in high-risk environments, ensuring continued operation even under fire exposure.

Double Offset Design: Minimizes wear on the valve seat by reducing contact during operation, extending the valve's lifespan and ensuring long-term performance.

Pressure Rating: Rated for Class 150 to Class 900, these valves handle a wide range of pressures, making them suitable for a variety of industrial applications.

Bi-Directional Shutoff: Capable of maintaining a tight seal in both directions, these valves offer reliable and safe flow control in complex systems.

Anti-Over-Travel Stops: Prevents disc movement beyond its intended range, ensuring accurate control and preventing operational errors.

Adjustable Packing Glands: Guarantees zero external leakage by enhancing sealing performance, even under intense operating conditions.

Technical Specifications

Size Range: DN50 to DN2000

Pressure Rating: Class 150 to Class 900

Body Material: Constructed from ductile iron, coated with epoxy powder for enhanced corrosion resistance and protection against environmental factors.

Operation Options: Available with manual handwheels, gears, or actuators to suit a range of technical and operational requirements.

The double eccentric (double offset) design is crucial for reducing the friction and wear typically found in standard butterfly valves. In this design, the disc only comes into contact with the seat at the final point of closure, which reduces the stress on both components. This results in extended valve life, lower maintenance costs, and improved sealing performance. The valve is also capable of handling higher pressure and temperatures, which is essential in industries like oil & gas and chemical processing.

Why Choose IFLOW High-Performance Double Eccentric Butterfly Valves?

Fireproof Safety: Built with fire-resistant materials, these valves provide an extra layer of safety in hazardous and high-temperature environments, meeting the stringent safety standards of industries such as oil & gas.

Extended Durability: The double eccentric design minimizes wear, ensuring long-term reliability and reducing the frequency of maintenance and repairs.

Corrosion Resistance: Coated with epoxy powder, these valves are protected against harsh environmental conditions, making them suitable for marine systems and chemical processing industries.

Bi-Directional Sealing: The valve provides tight sealing in both flow directions, preventing leaks and ensuring operational efficiency.

Advanced Control Features: Equipped with anti-over-travel stops and adjustable packing glands, these valves offer precise control and leak-proof operation, even in the most demanding settings.