FIELD: aircraft air-conditioning systems. SUBSTANCE: fan 4 is mounted in recirculating air main 5 which connects passenger compartment 13 with fresh air supply passage. Individual ventilation pipe unions 7 are provided with adjusting valves 9. Each valve 9 is provided with actuator 10 and seat 11. Intermediate header 6 is connected to main 5 after fan 4. Header 6 is brought in communication with pipe unions 7 and is provided with several outlet passages 8 according to number of pipe unions 7 which are connected in parallel. Outlet end of each passage 8 is made in form of seat opposite to actuator 10 on side opposite to seat 11 forming recirculating air distributor. EFFECT: improved service characteristics of system due to enhanced economical efficiency at reduced mass and noise. 1 dwg
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