Válvulas Aerodinâmicas / Aero Valves
Sem partes móveis.
Simple construction. (No moving parts) Powerful boost for pneumatic transport. High power output.
Válvulas Mecânicas / Mechanical valves
Válvulas de membrana (back flapper valves).
In the lower power output range, from 10 up to 250 kW, often the inlet opening is intermittently closed by gas flow controlled back pressure valves, also called flapper valves.
![VANZ1[1]](https://www.emgroup.nl/emg/wp-content/uploads/2017/03/VANZ11.jpg "VANZ1[1]")