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C
. TWO PIPE OIL LINES
1. For two piped systems, where more lift is required,
the two-stage fuel unit is recommended. Table
3 (two-stage) and Table 4 (single-stage) show
allowable lift and lengths of 3/8 inch and 1/2 inch
OD tubing for both suction and return lines. Refer
to Figure 25.
TABLE 3: TWO-STAGE UNITS (3450 RPM) -
TWO PIPE SYSTEMS
M
"
H
L
f i
" t
H
"
S (
e
e
i F
. g
2
) 5
/ 3
T
u
b
n i
' 0
' 2
' 4
' 6
' 8
1
' 0
1
' 2
1
' 4
1
' 6
1
' 8
64
a
i x
m
u
m
L
e
n
g
h t
f o
T
u
b
n i
"
+
"
R
"
S (
e
e
F
g i
u
e r
2
" 8
O
D
/ 1
" 2
O
g
3 (
G
P
H
)
T
u
b
n i
g
3 (
9
' 3
1
0
' 0
8
' 5
1
0
' 0
7
' 7
1
0
' 0
6
' 9
1
0
' 0
6
' 0
1
0
' 0
5
' 2
1
0
' 0
4
' 4
1
0
' 0
3
' 6
1
0
' 0
2
' 7
1
0
' 0
- - -
7
' 6
Figure 25: Two Pipe Oil Lines
TABLE 4: SINGLE-STAGE UNITS (3450 RPM) -
L
f i
S (
e
e
g
) 5
D
G
P
H
)
1
1
1
1
1
TWO PIPE SYSTEMS
M
a
i x
m
u
m
"
H
"
+
"
R
"
" t
H
"
i F
. g
2
) 5
/ 3
" 8
O
D
T
u
b
n i
g
3 (
G
P
' 0
8
' 4
' 1
7
' 8
' 2
7
' 3
' 3
6
' 8
' 4
6
' 3
' 5
5
' 7
' 6
5
' 2
' 7
4
' 7
' 8
4
' 2
' 9
3
' 6
' 0
3
' 1
' 1
2
' 6
' 2
2
' 1
' 3
- - -
' 4
- - -
L
e
n
g
h t
f o
T
u
b
n i
g
S (
e
e
F
g i
u
e r
2
) 5
/ 1
" 2
O
D
H
)
T
u
b
n i
g
3 (
G
P
H
)
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
1
0
' 0
8
' 3
6
' 2
4
' 1
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