Product specification
Butterfly Valves
Wafer, lug and double-flanged butterfly valves for large-bore, low-differential isolation and regulation.
Overview
Where space and weight matter more than pressure class, butterfly valves deliver isolation at a fraction of the face-to-face dimension. Concentric and high-performance double-offset designs are offered with manual, gear or actuated operation.
Design features
- Concentric resilient-seated and double-offset high-performance designs
- One-piece through shaft with keyed disc connection
- Replaceable liner and seat for economical overhaul
- Gear operator with position indicator and mechanical stops
- Compact face-to-face dimensions reduce structural loading
- Actuator-ready ISO 5211 top flange
Size & pressure class range
| Size range | Pressure class |
|---|---|
| 2" – 48" | Class 150 / PN 10 – PN 16 |
| 3" – 24" | Class 300 (high performance) |
| 3" – 12" | Class 600 (double offset) |
Sizes and classes outside this table are reviewed on enquiry against available patterns and forging stock.
Design standards
- API 609
- EN 593
- ASME B16.34
- ISO 5752
- ISO 5211
Body & trim materials
- Carbon steel: A216 WCB, A105
- Stainless steel: CF8, CF8M
- Disc: SS 316, SS 304, aluminium bronze
End connections
- Wafer
- Lugged
- Double flanged
- Butt-welded (high performance)
Testing
- Hydrostatic shell & seat
- Air seat test
- Torque verification
Temperature range
-29 °C to +200 °C with elastomer seats; to +425 °C with metal seats
Typical applications
Where this valve family usually lands.
Also manufactured
Related valve families.
Next step
Need butterfly valves against a specific datasheet?
Share the size, class, metallurgy, end connection and test requirement. We will confirm feasibility and lead time.