Originally Posted by
IFLY_INDIGO
lets find a better one
Or perhaps a better differences training.
A321 is not equipped with any CTR tank PUMPs as such, only TRANSFER VALVES. Under ceratin logic they open to enable fuel transfer
from the CTR TK to the WING TK. The energy to do so is provided by means of WING TK fuel flow through converging / diverging nozzle (aka jet pump), which by means of suction uplifts CTR TK fuel into stream of and these two combined are then reintroduced into the WING TK.
Picture worth a thousand words is to be found at FCOM 1.28.10 p3.
FD (the un-real)