Double Eccentric Butterfly Valve

Datasheet

Specifications are indicative. Final specification is confirmed at quotation.

Size Range

DN50 to DN1600

Pressure Class

PN10 / Class 150 to PN100 / Class 600

Standards

ASME B16.34, API 609, EN 593, ISO 5752, EN 558, API 598, ISO 5208, EN 12266-1, GOST 9544, ASME B16.34 (Pressure Temperature Rating), EN 12516-1 (Pressure Temperature Rating), ASME B16.5 (Flange Standard), ASME B16.47 (Flange Standard), EN 1092 (Flange Standard), GOST 33259 (Flange Standard), GB/T 9124 (Flange Standard)

End connection

ASME B16.5 flange · ASME B16.47 flange · EN 1092 flange · GOST 33259 flange · GB/T 9124 flange

Available sizes

Standard DN sizes covered by this product. Confirmed at quote.

Configure your variant(manually adjust box on the right if you require a different spec)

Size

DN50 (2")DN65 (2 1/2")DN80 (3")DN100 (4")DN125 (5")DN150 (6")DN200 (8")DN250 (10")DN300 (12")DN350 (14")DN400 (16")DN450 (18")DN500 (20")DN600 (24")DN700 (28")DN800 (32")DN900 (36")DN1000 (40")DN1200 (48")DN1400DN1600

Pressure

PN10PN16PN25PN40PN64PN100Class 150Class 300Class 600

End connection

ASME B16.5 flangeASME B16.47 flangeEN 1092 flangeGOST 33259 flangeGB/T 9124 flange

Materials

All available material options per part. Click a pill to set it in the configurator.

body

Carbon SteelStainless SteelAlloy Steel

Features

• Single elastic valve seat sealing structure achieves dynamic sealing through system pressure
• Bidirectional leak-free sealing capability
• Lip-edge sealing design compensates for temperature and pressure changes
• Double eccentric disc design eliminates contact between valve seat and disc during opening and closing, removing wear at upper and lower seat ends during frequent operation
• Reduced operating torque due to double eccentric structure
• Shaft fly-prevention step at top prevents upper shaft from exiting the valve cover in case of accident
• Valve seat replaceable by removing pressure plate only, without disassembling disc and shaft
• Combines flow shut-off and control functions
• Flow characteristic curve follows geometric ratio change
• Wide adjustment range; tight seal maintained during control operation
• Sealing achieved without additional sealing rings or metal components
• Spherical arc sealing surface on valve disc
• Small volume and light weight
• Wide manufacturing size range

Notes

• Operator options listed as: Manual, Pneumatic, Electric, etc.

Description

A double eccentric high-performance butterfly valve with a spherical arc sealing surface on the disc. The sealing mechanism achieves a dynamic seal through system pressure using a single flexible lip-shaped sealing seat, providing bidirectional leak-free sealing. Suitable for quick shut-off or flow regulation across a wide range of industrial applications.

Available pressure classes

Pressure classes this product is rated to.