User Guide

134 l uponorengineering.com
Table E-1: PEX pipe expansion arm calculations ½" to 3"
1" PEX pipe expansion arm
Delta
T (ΔT)
Run
(ft)
Delta L
(in)
Flexible arm
length (in)
L1
(in)
L2
(in)
PEX with PEX-a Pipe Support, strut and strut clamps has a thermal expansion rate of 0.08"/10°F ΔT/100 ft. (2.03mm/5.56°C ΔT/30.48m).
30
50 0.12 4.41 0.88 1.76
60 0.144 4.83 0.97 1.93
70 0.168 5.22 1.04 2.09
80 0.192 5.58 1.12 2.23
90 0.216 5.92 1.18 2.37
100 0.24 6.24 1.25 2.49
40
50 0.16 5.09 1.02 2.04
60 0.048 2.79 0.56 1.12
70 0.056 3.01 0.60 1.20
80 0.064 3.22 0.64 1.29
90 0.072 3.42 0.68 1.37
100 0.08 3.60 0.72 1.44
50
50 0.2 5.69 1.14 2.28
60 0.24 6.24 1.25 2.49
70 0.28 6.73 1.35 2.69
80 0.32 7.20 1.44 2.88
90 0.36 7.64 1.53 3.05
100 0.4 8.05 1.61 3.22
60
50 0.24 6.24 1.25 2.49
60 0.288 6.83 1.37 2.73
70 0.336 7.38 1.48 2.95
80 0.384 7.89 1.58 3.15
90 0.432 8.37 1.67 3.35
100 0.48 8.82 1.76 3.53
70
50 0.28 6.73 1.35 2.69
60 0.336 7.38 1.48 2.95
70 0.392 7.97 1.59 3.19
80 0.448 8.52 1.70 3.41
90 0.504 9.04 1.81 3.61
100 0.56 9.52 1.90 3.81
80
50 0.32 7.20 1.44 2.88
60 0.384 7.89 1.58 3.15
70 0.448 8.52 1.70 3.41
80 0.512 9.11 1.82 3.64
90 0.576 9.66 1.93 3.86
100 0.64 10.18 2.04 4.07
90
50 0.04 2.55 0.51 1.02
60 0.048 2.79 0.56 1.12
70 0.056 3.01 0.60 1.20
80 0.064 3.22 0.64 1.29
90 0.072 3.42 0.68 1.37
100 0.08 3.60 0.72 1.44
1" PEX pipe expansion arm
Delta
T (ΔT)
Run
(ft)
Delta L
(in)
Flexible arm
length (in)
L1
(in)
L2
(in)
PEX with PEX-a Pipe Support, strut and strut clamps has a thermal expansion rate of 0.08"/10°F ΔT/100 ft. (2.03mm/5.56°C ΔT/30.48m).
100
50 0.08 3.60 0.72 1.44
60 0.096 3.94 0.79 1.58
70 0.112 4.26 0.85 1.70
80 0.128 4.55 0.91 1.82
90 0.144 4.83 0.97 1.93
100 0.16 5.09 1.02 2.04
110
50 0.44 8.44 1.69 3.38
60 0.528 9.25 1.85 3.70
70 0.616 9.99 2.00 4.00
80 0.704 10.68 2.14 4.27
90 0.792 11.33 2.27 4.53
100 0.88 11.94 2.39 4.78
120
50 0.48 8.82 1.76 3.53
60 0.576 9.66 1.93 3.86
70 0.672 10.43 2.09 4.17
80 0.768 11.15 2.23 4.46
90 0.864 11.83 2.37 4.73
100 0.96 12.47 2.49 4.99
130
50 0.52 9.18 1.84 3.67
60 0.624 10.05 2.01 4.02
70 0.728 10.86 2.17 4.34
80 0.832 11.61 2.32 4.64
90 0.936 12.31 2.46 4.93
100 1.04 12.98 2.60 5.19
140
50 0.56 9.52 1.90 3.81
60 0.672 10.43 2.09 4.17
70 0.784 11.27 2.25 4.51
80 0.896 12.05 2.41 4.82
90 1.008 12.78 2.56 5.11
100 1.12 13.47 2.69 5.39
150
50 0.6 9.86 1.97 3.94
60 0.72 10.80 2.16 4.32
70 0.84 11.67 2.33 4.67
80 0.96 12.47 2.49 4.99
90 1.08 13.23 2.65 5.29
100 1.2 13.94 2.79 5.58
160
50 0.64 10.18 2.04 4.07
60 0.768 11.15 2.23 4.46
70 0.896 12.05 2.41 4.82
80 1.024 12.88 2.58 5.15
90 1.152 13.66 2.73 5.46
100 1.28 14.40 2.88 5.76