Double Eccentric Butterfly Valve

● Size: 2”~72”

● Pressure Rating: Class150~900LB. PN6~PN100

● Main Materials: High Temperature Steel, Stainless Steel, Duplex Steel etc.

● Stem Material: XM-19, Duplex Steel, Inconel X-750

● Packing Material: Flexible Graphite

● Seat Material: Stellite

● Temperature: ≤800℃

● Design and Manufacture: API 609

● Face-to-Face: API609, ASME B16.10, ISO 5752

● Ends Connection: Flange, Wafer, Lug

● Inspection & Testing: API 598, EN12266

● Operation: Lever,Worm Gear, Electric, Pneumatic.

The Double Eccentric Butterfly Valve is a practical choice for industrial piping systems that require dependable shut-off and long service life under demanding operating conditions. Its double offset disc arrangement reduces rubbing between the disc and seat during operation, which helps limit wear and maintain sealing stability over extended use.

The Double Eccentric Butterfly Valve is produced in sizes from 2" to 72", with pressure ratings covering Class 150 through Class 900, allowing it to serve a wide variety of industrial piping applications. To match different service conditions, the valve can be manufactured in high temperature steel, stainless steel, duplex steel, and other selected materials. Stem options such as XM-19, duplex steel, and Inconel X-750 are also available where higher strength and corrosion resistance are needed.

For easier integration into different pipeline layouts, the valve is offered with flanged, wafer, or lug-type ends. Operating methods can be selected according to system requirements, including lever, worm gear, electric actuation, and pneumatic actuation. The use of a Stellite seat together with flexible graphite packing supports reliable service in elevated temperature applications up to 800℃.

This valve is commonly used in water treatment plants, power stations, steel manufacturing facilities, chemical processing systems, and environmental engineering projects. Its design combines mechanical durability, dependable sealing, and installation flexibility, making it a practical choice for industrial services that demand steady long-term operation.

Double Eccentric Butterfly Valve Key Features

Reduced wear through double eccentric design

The disc moves away from the seat during much of the operating cycle, which lowers sealing surface contact and helps reduce wear compared with more conventional butterfly valve structures.

Stable sealing performance in severe service

For applications involving demanding pressure and temperature conditions or repeated valve operation, reliable shut-off is a key requirement. The Double Eccentric Butterfly Valve is designed to deliver consistent sealing performance in these environments, making it suitable for long-term industrial use.

Material combinations for corrosive and high-temperature media

The valve can be produced in a range of material grades to match actual service conditions. Depending on the working medium and temperature level, options may include stainless steel, duplex steel, and other alloys selected for improved corrosion resistance and heat tolerance.

Installation and operation flexibility

Different projects often require different connection and control methods. To meet these needs, the valve is offered with flange, wafer, and lug end connections, together with manual lever, worm gear, electric, and pneumatic operating options.

Suitable for high temperature applications

With flexible graphite packing and Stellite seat construction, the valve can be used in services with temperatures up to 800℃, depending on material selection and application conditions.