47
General Refrigerant Piping System Information
Due to our policy of continuous product innovation, some specifications may change without notification.
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Coiled Expansion Loops and Offsets (Plan View).
Anticipated Linear
Expansion (LE) (in.)
Nominal Tube Size (OD) inches
1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
1/2
R
1
6
7
8
9
11
12
13
L
2
38
44
50
59
67
74
80
1
R
1
9
10
11
13
15
17
18
L
2
54
63
70
83
94
104
113
1-1/2
R
1
11
12
14
16
18
20
22
L
2
66
77
86
101
115
127
138
2
R
1
12
14
16
19
21
23
25
L
2
77
89
99
117
133
147
160
2-1/2
R
1
14
16
18
21
24
26
29
L
2
86
99
111
131
149
165
179
3
R
1
15
17
19
23
26
29
31
L
2
94
109
122
143
163
180
196
3-1/2
R
1
16
19
21
25
28
31
34
L
2
102
117
131
155
176
195
212
4
R
1
17
20
22
26
30
33
36
L
2
109
126
140
166
188
208
226
1
R = Centerline Length of Pipe.
2
L = Centerline Minimum Radius (inches).
Table 24: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets.
R
L
L
R
L
Large Tubing U-bend (>3/4 in.)
Loop
Small Tubing U-bend (<3/4 in.)
All expansion loops and offsets should be installed in the horizontal plane to prevent the possibility of trapping oil. Loops and offsets in vertical risers
should also be installed in a horizontal plane.
COPPER EXPANSION AND
CONTRACTION
