The air valve of plastic featuring the unique roll-on membrane technology (Ord. No. 989-00) is perfectly suitable for taking in and releasing major amounts of air during filling or draining of pipelines and for continuous in-service ventilation. The valve seat is not in contact with the medium.
The air valve operates continuously from 0 to 6 bar, reliably sealing when unpressurized.
The low weight af the air valve of PA allows an easy and quick installation. Moreover, via the profile clamp of stainless steel the valve can be quickly opened and closed in case of maintenance and/or cleaning.
Max. air release capacity: female thread 3", Flansch DN 80 = 260 m³/h
Flansch DN 50 = 166 m³/h
Operating range: 0-6 bar
Max. ventilation cross: 480 mm²
Special functions on request:
- Air intake only or air release only
- With outlet elbow for connecting a Hawle exhaust air kit for air valves