Double-function sewerage air valve:

- Small and large flow
- Small flow 5m3/h
- Large flow dependent on the DN
- Allowable operating pressure (PFA) 10 bar
- Connecting flange ISO PN 10/16

Enables:

- Protection of the main by evacuating (degassing) air trapped at the high point, when the network is in use
- The evacuation of air at a high-flow rate when filling the pipeline
-  The admission of air at a high-flow rate when draining the pipeline
 - Savings to be made when installing mains. Thanks to the use of air valves, the main can follow the relief of the ground thus preventing the excess costs related to the overdepths (shoring the trench, ground water lowering, etc.) required to follow a regular main profile.

Optional:

- Check valve: to be placed at the outlet to prevent air intake: please contact us
- Overspeed safety device: for reducing the water hammer effect that occurs when filling the main and when stopping the pumps by limiting the output of air at a high-flow rate through automatically closing a valve, the release setting of which is defined on the order: please contact us.