User Guide

22
C. TWO-PIPE OIL LINES
1. For two-piped systems, where more lift is required,
the two-stage fuel unit is recommended. Table 4
(single-stage) and Table 5 (two-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 14.
Figure 14: Two-Pipe Installation
Lift "H"
(See Figure)
Maximum Length of Tubing
"H" + "R" (See Figure)
3/8" OD Tubing
(3 GPH)
1/2" OD Tubing
(3 GPH)
0' 84' 100'
1' 78' 100'
2' 73' 100'
3' 68' 100'
4' 63' 100'
5' 57' 100'
6' 52' 100'
7' 47' 100'
8' 42' 100'
9' 36' 100'
10' 31' 100'
11' 26' 100'
12' 21' 83'
13' --- 62'
14' --- 41'
Lift "H"
(See Figure)
Maximum Length of Tubing
"H" + "R" (See Figure)
3/8" OD Tubing
(3 GPH)
1/2" OD Tubing
(3 GPH)
0' 93' 100'
2' 85' 100'
4' 77' 100'
6' 69' 100'
8' 60' 100'
10' 52' 100'
12' 44' 100'
14' 36' 100'
16' 27' 100'
18' --- 76'
TABLE 4: SINGLE STAGE UNITS (3450 RPM)
Two Pipe Systems
TABLE 5: TWO-STAGE UNITS (3450 RPM)
Two Pipe Systems
VI: OIL PIPING (continued)