Butterfly valves
Butterfly valves consist of three parts: a valve, a shaft and a body. They are used for air and gas ducts or in pipelines.
Valve
- Consists of 1 part or composed of different parts
- Shutter construction
Shaft
- Continuous or a two-piece axle
Body
- Welded or casted construction
- Shock- and crack-resistant
- With wafer, flanges or welding connections
Types of butterfly valves
| DSL® | DSS® | DSK® light applications | DSK® heavy applications |
|---|---|---|---|
| Simple construction | Complex construction | Double flanged welded construction | Double flanged welded construction |
| Supplied with a compression packing for optimal tightness | For extreme conditions such as high speed, pressure and temperature | Only available as wafer type | Only available as wafer type |
| Temperatures up to 650°C | Only available as wafer type | Round or rectangular construction | Round or rectangular construction |
| DN 50 mm up to DN 600 mm | Temperatures up to 1050°C | Temperatures up to 300°C | Supplied at both sides with an adjustable compression packing and with an additional bearing |
| DN 80 mm up to DN 1600 mm | DN 280 mm up to DN 2000 mm | Temperatures up to 650°C | |
| Can be supplied with shutter valves to control the steam | DN 250 mm up to 3000 mm | ||
| Can be supplied with shutter valves to control the steam |
Options for butterfly valves
- Additional sealing profile for a higher sealing degree
- Inflatable seal for 100% sealing
- Special compression packing
- Flexible spring steel profile for a higher sealing degree
- Corrosion-resistant materials
- Surface protection
- Vibration type