INSTRUCTION MANUAL
30
11. SUPPLEMENT
11.1 CAPACITY CHART IN MILLIMETERS AND INCHES
Use the capacity charts to determine the maximum wall-thickness of the tube and to
select the right T-DRILL head.
Instructions for the use of the capacity charts:
1. Use the unit of measure that is correct for you: the measures of the charts are in both
millimeters and in inches.
2. From the horizontal black row, find the tee size you need (inner diameter), and from
the vertical black column the outer diameter of your run tube.
3. The intersection of the horizontal and vertical rows will show you the maximum wall-
thickness of the tube. This thickness is not to be exceeded.
tee size
I.D.
Run tube
O.D.
Capacity charts for forming tees in copper tubes
Max wall-thicknesses (mm and inch)
8
10
12
15
18
22
28
35
42
54
5/16” 3/8”
1/2"
5/8"
3/4"
7/8"
1 1/8" 1 3/8" 1 5/8" 2 1/8"
15
5/8"
0.8
1.0
1.2
1.2
18
3/4"
0.8
1.0
1.2
1.5
1.2
22
7/8"
0.8
1.0
1.2
1.5
1.5
1.5
28
1 1/8"
0.8
1.0
1.2
1.5
1.5
1.5
1.5
35
1 3/8"
0.8
1.0
1.2
1.5
1.5
1.5
1.5
1.5
42
1 5/8"
0.8
1.0
1.2
1.5
1.5
1.5
1.5
2.0
2.0
54
2 1/8"
0.8
1.0
1.2
1.5
1.5
1.5
1.5
2.0
2.0
2.0
64
2½"
0.8
1.0
1.2
1.5
1.5
1.5
1.5
2.5
2.5
2.5
76,1
3"
0.8
1.0
1.2
1.5
1.5
1.5
1.5
2.5
2.5
2.5
88,9
3½"
0.8
1.0
1.2
1.5
1.5
1.5
1.5
2.5
2.5
2.5
108
4¼"
0.8
1.0
1.2
1.5
1.5
1.5
1.5
2.5
2.5
2.5
= Annealing before forming the tee is recommended!
