Support location and spacing is dependent on the pipe diameter, operating temperature of the system, and the location of any concentrated stress loads (i.e., valves, flanges, and any other heavy system components). Proper support spacing is critical to ensure that deflection is kept to a minimum. Hangers used must have an adequate load-bearing surface free of any rough or sharp edges that could damage the piping during use. They must also not restrict linear movement of the system due to the effects of expansion and contraction; overtightening must be avoided. |
|
Pipe Size (in) |
Maximum
Support Spacing in Feet |
|
60°F |
80°F |
100°F |
120°F |
140°F |
1/4 |
4
|
3 1/2
|
3 1/2
|
2
|
2
|
3/8 |
4
|
4
|
3 1/2
|
2 1/2
|
2
|
1/2 |
4 1/2
|
4 1/2
|
4
|
2 1/2
|
2 1/2
|
3/4 |
4
|
4 1/2
|
4
|
2 1/2
|
2 1/2
|
1 |
5 1/2
|
5
|
4 1/2
|
3
|
2 1/2
|
1 1/4 |
5 1/2
|
5 1/2
|
5
|
3
|
3
|
1 1/2 |
6
|
5 1/2
|
5
|
3 1/2
|
3
|
2 |
6
|
5 1/2
|
5
|
3 1/2
|
3
|
2 1/2 |
7
|
6 1/2
|
6
|
4
|
3 1/2
|
3 |
7
|
7
|
6
|
4
|
3 1/2
|
3 1/2 |
7 1/2
|
7
|
6 1/2
|
4
|
4
|
4 |
7 1/2
|
7
|
6 1/2
|
4 1/2
|
4
|
6 |
8 1/2
|
8
|
7 1/2
|
5
|
4 1/2
|
6 x 1/8 |
7 1/2
|
7
|
6 1/2
|
4 1/2
|
4
|
8 |
9
|
8 1/2
|
8
|
5
|
4 1/2
|
10 |
10 |
9 |
8 1/2 |
5 1/2 |
5 |
12 |
11 1/2 |
10 1/2 |
9 1/2 |
6 1/2 |
5 1/2 |
|
