989-00
Air valve of plastic

The air valve of plastic featuring the unique roll-on membrane technology (Ord. No. 989-00) is perfectly suitable for taking in and releasing 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 10 bar, reliably sealing when unpressurized. The sealing principle with roll-on membrane has a shock-absorbing effect.

The low weight af the air valve of PA allows an easy and quick installation. Moreover, via the clamp ring 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" = 260 m³/h
Flansch DN 50, DN 80 = 166 m³/h
Operating range: 0-10 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

Material: Body: PA
Float: PP
Outlet elbow: PE with strainer
For further components see parts list
Max. operating Pressure: See table
Medium Sewage

The air valve of plastic featuring the unique roll-on membrane technology (Ord. No. 989-00) is perfectly suitable for taking in and releasing 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 10 bar, reliably sealing when unpressurized. The sealing principle with roll-on membrane has a shock-absorbing effect.

The low weight af the air valve of PA allows an easy and quick installation. Moreover, via the clamp ring 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" = 260 m³/h
Flansch DN 50, DN 80 = 166 m³/h
Operating range: 0-10 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