PPRuNe Forums

PPRuNe Forums (https://www.pprune.org/)
-   Tech Log (https://www.pprune.org/tech-log-15/)
-   -   A320 hydraulic priority valves (https://www.pprune.org/tech-log/649713-a320-hydraulic-priority-valves.html)

crjcaveman 6th November 2022 18:21
A320 hydraulic priority valves
 
I have read my company supplied manuals on this and so far I don't have a clear answer. Do the hydraulic priority valves de-prioritize the landing gear, slats&flaps(green), emergency generator, slats(blue) and flaps(yellow)or they prioritize these systems? I think they de-priortize them but I can't find any official source that says this.

Uplinker 11th November 2022 09:34
From my copy of A320 FCOM:

Quote: Priority valves cut off hydraulic power to heavy load users if hydraulic pressure in a system gets low.

and A330 FCOM:
In the event of low hydraulic pressure, a priority valve cuts off hydraulic power to heavy load users (emergency generator, nose-wheel steering, landing gear) in order to keep the pressure for normal braking and flight controls.
A Pressure-Off Brake system (installed on the flaps, slats, and THS actuator) ensures the same function.

crjcaveman 12th November 2022 14:39
Thanks, that clears it up.


All times are GMT. The time now is 08:04.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.