Duplex Butterfly Valve
WDL Duplex Butterfly Valve provides compact quarter-turn isolation or flow regulation for seawater and desalination systems and offshore and marine pipelines. Connections, trim and operation are selected to the project conditions.
Description
Duplex Butterfly Valve
WDL Duplex Butterfly Valve provides compact quarter-turn isolation or flow regulation for process systems that need high strength with resistance to chloride pitting and stress-corrosion cracking. Duplex stainless steel combines austenitic and ferritic phases for chloride service that requires higher strength than 300-series stainless steel.
Design Options
| Item | Available specification |
|---|---|
| Material | Duplex 2205, Super Duplex 2507 or project 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 desalination systems
- Offshore and marine pipelines
- Pulp and paper processing
- Large-diameter process pipelines
- Automated isolation and control loops
Selection Notes
Choose 2205, 2507 or another grade from chloride level, temperature, pressure and required pitting resistance.
Specify shutoff direction, seat material, flange standard, solids content and required operating torque.
Frequently Asked Questions
Why select Duplex Stainless Steel for this butterfly valve?
Duplex stainless steel combines austenitic and ferritic phases for chloride service that requires higher strength than 300-series stainless steel. 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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