Double Eccentric Butterfly Valve
Datasheet
Download datasheet (PDF)Specifications are indicative. Final specification is confirmed at quotation.
Specifications
Confirmed at quote- Size Range
- DN50 to DN1600
- Pressure Class
- PN10, PN16, PN25, PN40, PN63, PN100, Class 150, Class 300, Class 400, Class 600
- End connection
- Flanged
- Operating temperature
- -46°C to 200°C
Standards
- Design & manufacture
- ASME B16.34, API 609, EN 593
- Inspection & test
- API 598, ISO 5208, EN 12266-1, GOST 9544
- Face to face
- API 609, ISO 5752, EN 558
- Flange & end dimension
- ASME B16.5, ASME B16.47, EN 1092, GOST 33259, GB/T 9124
- Pressure-temperature rating
- EN 12516-1, ASME B16.34
Configure your variant(manually adjust box on the right if you require a different spec)
- Size
- Pressure
- End connection
Materials
All available material options per part. Click a pill to set it in the configurator.
- Body
Operating media
Typical applications
- Water supply and drainage pipelines
- Gas pipelines
- Food industry
- Pharmaceutical industry
- Chemical industry
- Petroleum industry
- Electric power industry
- Light textile industry
- Paper-making industry
Actuation options
Features
- Single elastic valve seat sealing structure achieves dynamic sealing through system pressure
- Bidirectional sealing
- 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
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.
Selection notes
This butterfly valve is a double eccentric and high-performance pattern, supplied for flanged installation.
Sizes run DN50 to DN1600, in PN10, PN16, PN25, PN40, PN63, PN100, Class 150, Class 300, Class 400, Class 600.
The body is offered in Carbon Steel, Stainless Steel and Alloy Steel, so the grade can be matched to the service rather than the other way round.
Stated service media include water, gas, food industry fluids, pharmaceutical fluids, chemical fluids and petroleum fluids.
It is catalogued for Water & Wastewater.
Working temperature is -46°C to 200°C.
Built to ASME B16.34, API 609, EN 593, API 609 (Face to Face) and ISO 5752.
Available pressure classes
Pressure classes this product is rated to.
Used in
Related guides
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Adds to your quote request, not a purchase. Refine size, pressure and material before submitting.