Butterfly Valves
- Products
- Butterfly Valves
Butterfly valves are designed and customised for the special maintenance and safety needs of hydroelectric power plants.
Nencini engineers and produces several kinds of butterfly valves, based on different operating principles:
- concentric
- double offset
- triple offset
This type of valve is available for raw, potable, sea and sewage water and is used as an isolating device, ensuring a tight seal when closed and minimal pressure loss when open.
Fully customisable and easy to use, butterfly valves require limited space for installation. Large valves are designed with biplane, truss and double eccentric discs.

Applications
Nencini manufactures single and double seat valves suitable for many different applications:
- water pipelines related to power generation facilities
- water treatment plants
- major water supply and distribution lines
- pumping plants
Technical Data
| Size | DN 100 <> 3500 DN 4“ <> 138“ |
| Pressure Range | PN 10 <> 50 ASME/ANSI 150 <> 300 |
| Actuation | Manual, by counterweight, electric and hydraulic |