NORVA welded
DN 600-800
- For complete and quick closing of the return flow in pipelines even at small pressure difference
- Easy maintenance – no removal from the pipeline and easy disassembly of cover and disc
- Design with flexible disc-neck
- Movement of the rubberized disc-neck (not on the bearings) prevents from blocking due to polluted media
- Area of application at a flow of up to 4 m/s; recommended 0.5-2.5 m/s; for short pipeline up to 6 m/s
- Horizontal and vertical installation possible