English to Italian Tech/Engineering Mechanics / Mech Engineering Industrial fans

si tratta di didascalia di alcune figure:

- Modular Filtering Cells for Air Intake: Flow up to 200.000 [m3/h]
- Sand Filter: Flow up to 110.000 [m3/h]
- Inlet Vane Control
Mechanical actuator with gearbox
- Inlet vane control - Pneumatic actuator with **air failure tank**
- Parallel Blades Damper - Electric actuator: 3400x1100 [mm] inlet section
- Opposite Blades Damper - Operating temperature design: 250 [°C]
- Parallel Blades Damper - Material: AISI 316 L
- Silencer and Damper - 3D design: 4000x4000 [mm] inlet section

avevo pensato a 'serbatoio di riserva mancanza aria', ma non ci sono riscontri in rete.
'serbatoio di riserva aria?'