Riello G 24 - Hydraulic Systems; Gravity Feed from Bottom of Oil Storage Tank; Gravity Feed Over Top of Oil Storage Tank; Suction Feed

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3. HYDRAULIC SYSTEMS
GRAVITY FEED from the bottom of the oil storage tank
GRAVITY FEED over the top of the oil storage tank
SUCTION FEED
H = Difference in height;
L = Total lenght of the suction line, including the vertical section;
The copper pipes of 8 mm and 10 mm I.D., as shown on the tables above, may be replaced by steel pipes of 1/4” or 3/8” Gas.
The dimension P should not exceed 10 m, to
avoid breakage of pump seals.
H
meters
L meters
øi øi
8 mm 10 mm
0.5 5 10
110 20
1.5 15 30
220 40
The dimension P should not exceed 10 m, to
avoid breakage of pump seals.
H
meters
L meters
øi øi
8 mm 10 mm
032 70
0.5 28 62
124 55
1.5 20 48
216 40
37 25
3.5 - 10
H
meters
L meters
øi øi
8 mm 10 mm
032 70
0.5 28 62
124 55
1.5 20 48
216 40
37 25
3.5 - 10
Oil lines must be perfectly
sealed. The use of cop-
per pipe is therefore rec-
ommended.
The pump suction must
not exceed 4 m w.c. (30
cm Hg) because beyond
this value the pump
becomes noisy.
The return line must ter-
minate at the same level
as the foot valve; other-
wise the pump may
become air-locked.