CIRCULATING PUMP
The circulating pump (see fig. 4-39) is utilized to
return hydraulic fluid from the auxiliary tank to the
gravity tank. The fluid passes through a filter between
the discharge side of the circulating pump and the
gravity tank. This ensures that all new or recycled
hydraulic fluid is filtered prior to entering the gravity
tank.
4-34
TO MAIN PUMPS
FROM
GRAVITY TANK
FILTER UNIT
BOOSTER
PUMP
SAMPLE
PETCOCK
SAMPLE
PETCOCK
VENT VALVE
HANDWHEEL
DUPLEX GAUGE
TO MAIN
PUMPS
FLEXIBLE
HOSE
SHUTOFF VALVE
QUICK
DISCONNECT
FILTER UNIT
DRAIN
LINE
ABEf0443
Figure 4-42.—Booster pump and filter installation.
