Eccentric Butterfly Valve

Designed for reliable flow control and isolation in demanding industrial applications, the Eccentric Butterfly Valve features an offset disc and shaft design that minimizes contact between the disc and seat during operation. This eccentric configuration reduces friction and wear, resulting in lower operating torque, improved sealing performance, and extended valve service life.

The Eccentric Butterfly Valve is suitable for a wide range of industrial systems where dependable shut-off, efficient flow control, and low maintenance are essential. Its robust construction and optimized disc geometry provide smooth operation and reliable performance across various pressure, temperature, and media conditions.

The Eccentric Butterfly Valve is widely used in oil & gas, petrochemical, chemical processing, power generation, water treatment, HVAC, mining, and general industrial applications. Depending on the application requirements, the valve can be supplied with manual, pneumatic, or electric actuation systems.

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Technical Specifications

Item	Specification
Product Type	Eccentric Butterfly Valve
Valve Type	Butterfly Valve
Design	Single / Double / Triple Eccentric*
Size Range	DN50 – DN2000 (2" – 80")*
Pressure Rating	PN10 – PN40 / Class 150 – Class 300*
Body Material	Carbon Steel / Stainless Steel / Ductile Iron*
Disc Material	Stainless Steel / Duplex / Carbon Steel*
Stem Material	Stainless Steel
Seat Material	Metal Seat / Soft Seat*
Seat Design	Replaceable / Integral*
End Connection	Wafer / Lug / Flanged
Flange Standard	EN 1092-1 / ASME B16.5 / ASME B16.47*
Face-to-Face	EN 558 / API 609
Design Standard	API 609 / EN 593
Testing Standard	API 598 / ISO 5208 / EN 12266-1
Temperature Range	-29°C to +500°C*
Operation	Manual / Pneumatic / Electric / Hydraulic
Applicable Media	Water, air, gas, oil, steam, chemicals and other industrial fluids

*Exact specifications can be customized according to project requirements.

Features & Benefits

Eccentric Disc Design

The offset disc and shaft design minimizes disc-to-seat contact during opening and closing, reducing friction and operating torque.

Reduced Seat Wear

The eccentric configuration significantly reduces rubbing between the disc and seat, helping extend seat service life and maintain reliable sealing performance.

Reliable Tight Shut-Off

Precision-machined sealing surfaces provide dependable isolation and help minimize leakage during operation.

Low Operating Torque

Reduced friction allows the valve to operate with lower torque, making it suitable for both manual operation and automated actuation.

High Flow Capacity

The streamlined disc design provides a relatively unobstructed flow path, helping reduce pressure loss and improve system efficiency.

Robust Construction

Heavy-duty body and disc materials provide excellent mechanical strength and durability for demanding industrial service.

Wide Pressure & Temperature Range

Different material combinations and seat designs can be selected to meet high-pressure, high-temperature, and corrosive service requirements.

Easy Maintenance

Replaceable seat and sealing components, depending on the configuration, simplify maintenance and reduce overall lifecycle costs.

Flexible Actuation

The valve can be equipped with manual gear operators, pneumatic actuators, electric actuators, or hydraulic actuators according to system requirements.

Wide Industrial Applications

Suitable for oil & gas, petrochemical, chemical processing, power generation, water treatment, mining, metallurgy, and industrial pipeline systems.