To release air when the main is being filled and to close and remain closed when the pipe is full to prevent loss of water.
Available Nominal sizes in mm
Air valve: 12, 19, 25 & 50.
To release air accumulated under pressure during normal working condition in the pipe line, again without loss of water
- Metal parts of Air valves are coated with Epoxy paint to avoid rust formation
- Rubber ball is made up of synthetic rubber with wooden for long life.
- Double acting air valve in specific size.
- Rubber ball seating nut is made up PVC material for using arrest the leakage