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Maximum Spacing for PVC and CPVC Hanger Supports
Fluids Engineering and Design
Engineering Handware Design and Guidance
Suggested Maximum Spacing Between Hanger Supports for PVC and CPVC
Support spacings for PVC and CPVC pipe systems are influenced by operating temperatures. The tables below recommends horizontal spacing based on pipe size, schedule, material (PVC or industrial grade CPVC), and operating temperature. Hangers and supports should not be clamped tightly because the axial movement of the pipe would be restricted. The charts are based on continuous spans and uninsulated lines carrying liquids. They are not applicable where loads between supports are concentrated (e.g., for valves, flanges) or where there is a change in direction. Hangers/supports should be located adjacent to joints, branch connections, and changes in direction. Risers should be in installed independently of adjacent horizontal hangers/supports.
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Pipe Size (in) |
PVC Pipe Schedule 40 |
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Temperature (° F) |
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60 |
80 |
100 |
120 |
140 |
|
1/2 |
4-1/2 |
4-1/2 |
4 |
2-1/2 |
2-1/2 |
3/4 |
5 |
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 |
4 |
7-1/2 |
7 |
6-1/2 |
4-1/2 |
4 |
6 |
8-1/2 |
8 |
7-1/2 |
5 |
4-1/2 |
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 |
14 |
12 |
11 |
10 |
7 |
6 |
16 |
12-1/2 |
11-1/2 |
10-1/2 |
7-1/2 |
6-1/2 |
SDR |
|||||
18 |
13 |
12 |
11 |
8 |
7 |
20 |
13-1/2 |
12-1/2 |
11-1/2 |
8-1/2 |
7-1/2 |
24 |
14 |
13 |
12 |
9 |
8 |
Pipe Size (in) |
PVC Pipe Schedule 80 |
||||
Temperature (° F) |
|||||
60 |
80 |
100 |
120 |
140 |
|
1/2 |
5 |
4-1/2 |
4 |
3 |
2-1/2 |
3/4 |
5-1/2 |
5 |
4-1/2 |
3 |
2-1/2 |
1 |
6 |
5-1/2 |
5 |
3-1/2 |
3 |
1-1/4 |
6 |
6 |
5-1/2 |
3-1/2 |
3 |
1-1/2 |
6-1/2 |
6 |
5-1/2 |
3-1/2 |
3-1/2 |
2 |
7 |
6-1/2 |
6 |
4 |
3-1/2 |
2-1/2 |
7-1/2 |
67-1/2 |
6-1/2 |
4-1/2 |
4 |
3 |
8 |
7-1/2 |
7 |
4-1/2 |
4 |
4 |
9 |
8-1/2 |
7-1/2 |
5 |
4-1/2 |
6 |
10 |
9-1/2 |
9 |
6 |
5 |
8 |
11 |
10-1/2 |
9-1/2 |
6-1/2 |
5-1/2 |
10 |
12 |
11 |
10 |
7 |
6 |
12 |
13 |
12 |
10-1/2 |
7-1/2 |
6-1/2 |
14 |
13-1/2 |
13 |
11 |
8 |
7 |
16 |
14 |
13-1/2 |
11-1/2 |
8-1/2 |
7-1/2 |
SDR |
|||||
18 |
14-1/2 |
14 |
12 |
9 |
8 |
20 |
15 |
14-1/2 |
12-1/2 |
9-1/2 |
8-1/2 |
24 |
15-1/2 |
15 |
13 |
10 |
9 |
Pipe
Size (in) |
CPVC Pipe Schedule 40
|
|||||
Temperature (° F)
|
||||||
73
|
100
|
120
|
140
|
160
|
180 |
|
1/2
|
5
|
4-1/2
|
4-1/2
|
4
|
2-1/2
|
2-1/2 |
3/4
|
5
|
5-1/2
|
5
|
4-1/2
|
3
|
2-1/2 |
1
|
5-1/2
|
5-1/2
|
5
|
4-1/2
|
3
|
2-1/2 |
1-1/4
|
5-1/2
|
5-1/2
|
5-1/2
|
5
|
3
|
3 |
1-1/2
|
6
|
6
|
5-1/2
|
5
|
3-1/2
|
3 |
2
|
6
|
6
|
5-1/2
|
5
|
3-1/2
|
3 |
2-1/2
|
7
|
7
|
6-1/2
|
6
|
4
|
3-1/2 |
3
|
7
|
7
|
7
|
6
|
4
|
3-1/2 |
4
|
7-1/2
|
7-1/2
|
7
|
6-1/2
|
4-1/2
|
4 |
6
|
8-1/2
|
8
|
7-1/2
|
7
|
5
|
4-1/2 |
8
|
9-1/2
|
9
|
8-1/2
|
7-1/2
|
5-1/2
|
5 |
10
|
10-1/2
|
10
|
9-1/2
|
8
|
6
|
5-1/2 |
12
|
11-1/2
|
10-1/2
|
10
|
8-1/2
|
6-1/2
|
6 |
Pipe
Size (in) |
CPVC Pipe Schedule 80
|
|||||
Temperature (° F)
|
||||||
73
|
100
|
120
|
140
|
160
|
180 |
|
1/2
|
5-1/2
|
5
|
4-1/2
|
4-1/2
|
3
|
2-1/2 |
3/4
|
5-1/2
|
5-1/2
|
5
|
4-1/2
|
3
|
2-1/2 |
1
|
6
|
6
|
5-1/2
|
5
|
3-1/2
|
3 |
1-1/4
|
6-1/2
|
6
|
6
|
5-1/2
|
3-1/2
|
3 |
1-1/2
|
7
|
6-1/2
|
6
|
5-1/2
|
3-1/2
|
3-1/2 |
2
|
7
|
7
|
6-1/2
|
6
|
4
|
3-1/2 |
2-1/2
|
8
|
7-1/2
|
7-1/2
|
6-1/2
|
4-1/2
|
4 |
3
|
8 |
8
|
7-1/2
|
7
|
4-1/2
|
4-1/2 |
4
|
8-1/2
|
9
|
8
|
7-1/2
|
5-1/2
|
4 |
6
|
10
|
9-1/2
|
9
|
8
|
5-1/2
|
5 |
8
|
11
|
10-1/2
|
10
|
9 |
6
|
5-1/2 |
10
|
11-1/2
|
11
|
10-1/2
|
9-1/2
|
6-1/2
|
6 |
12
|
12-1/2
|
12
|
11-1/2
|
10-1/2 |
7-1/2
|
6-1/2 |
Related:
- Pipe Support Hanger Spacing and Pipe Wall Thickness
- Flow Capacity Pipe and Tubes ANSI Schedule 40 Air
- Steel Threaded Rods Capacities ASTM A36 used for Pipe Support Hangers
- Pipe Thread Installation Torque Table Chart
- Pipe Size Schedule Chart
- Schedule 40 Steel Pipe Sizes & Dimensions ANSI
- Schedule 80 Steel Pipe Sizes and Dimensions ANSI
- Xtra Strong (XS) Size Steel Pipe Weights Table Calculator
- Double Xtra Strong (XXS) Size Steel Pipe Weights Calculator
References
- ASHRAE Handbook of Fundamentals, 2021 Inch-Pound Edition