Super Austenitic Butterfly Valve
WDL Super Austenitic Butterfly Valve provides compact quarter-turn isolation or flow regulation for seawater and brackish-water systems and flue-gas desulfurization. Connections, trim and operation are selected to the project conditions.
Description
Super Austenitic Butterfly Valve
WDL Super Austenitic Butterfly Valve provides compact quarter-turn isolation or flow regulation for process systems that need improved pitting and crevice-corrosion resistance in chloride service. Super austenitic stainless steel provides higher nickel, molybdenum and nitrogen content than standard 316L for demanding chloride environments.
Design Options
| Item | Available specification |
|---|---|
| Material | 254 SMO, 904L, 6Mo or project-specified grade |
| Function | compact quarter-turn isolation or flow regulation |
| Connections | Wafer, lugged or double-flanged |
| Operation | Lever, gearbox, pneumatic or electric actuator |
| Design basis | API 609, EN 593, API 598 or EN 12266-1 |
Typical Applications
- Seawater and brackish-water systems
- Flue-gas desulfurization
- Pulp bleaching equipment
- Large-diameter process pipelines
- Automated isolation and control loops
Selection Notes
Verify the selected grade against chloride concentration, temperature, crevice conditions and pressure before manufacture.
Specify shutoff direction, seat material, flange standard, solids content and required operating torque.
Frequently Asked Questions
Why select Super Austenitic Stainless Steel for this butterfly valve?
Super austenitic stainless steel provides higher nickel, molybdenum and nitrogen content than standard 316L for demanding chloride environments. Final suitability depends on the complete process conditions and the selected valve trim.
What information is needed for selection?
Provide the size, pressure rating, medium composition, concentration, temperature, connection standard, operating method and required quantity.
Send the process datasheet to WDL for material review, dimensional confirmation and quotation.








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