Coiled Expansion Loops And Offsets (Plan View) - LG Multi IV Engineering Manual

Figure 27: Coiled Expansion Loops and Offsets (Plan View).
L
R
Large Tubing U-bend (>3/4 in.)
Table 53: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets.
Anticipated Linear
Expansion (LE) (inches)
R
1
1/2
L
2
R
1
1
L
2
R
1
1-1/2
L
2
R 1
2
L 2
R
1
2-1/2
L
2
R
1
3
L
2
R
1
3-1/2
L
2
R
1
4
L
2
1 R = Centerline Length of Pipe.
2 L = Centerline Minimum Radius (inches).
All expansion Loops and Offsets should be installed in the horizontal plane to prevent the possibility of trapping oil. Loops and Offsets in verti-
cal risers should also be installed in a horizontal plane.
L
1/4 3/8
6 7
38 44
9 10
54 63
11 12
66 77
12 14
77 89
14 16
86 99
15 17
94 109
16 19
102 117
17 20
109 126
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LAYOUT BEST PRACTICES
Selecting Field-Supplied Copper Tubing
R
Loop
Nominal Tube Size (OD) inches
1/2 3/4
8 9
50 59
11 13
70 83
14 16
86 101
16 19
99 117
18 21
111 131
19 23
122 143
21 25
131 155
22 26
140 166
L
Small Tubing U-bend (<3/4 in.)
1 1-1/4
11 12
67 74
15 17
94 104
18 20
115 127
21 23
133 147
24 26
149 165
26 29
163 180
28 31
176 195
30 33
188 208
1-1/2
13
80
18
113
22
138
25
160
29
179
31
196
34
212
36
226
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