Anh
ventilation damper
ventilation valve
Đức
Lüftungsklappe
Pháp
clapet de ventilation
soupape de ventilation
vanne de ventilation
ventilation damper,ventilation valve /INDUSTRY-CHEM,ENG-MECHANICAL/
[DE] Lüftungsklappe
[EN] ventilation damper; ventilation valve
[FR] clapet de ventilation; soupape de ventilation; vanne de ventilation