User Guide

132 l uponorengineering.com
½" 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).
90
50 0.36 5.69 1.14 2.28
60 0.432 6.24 1.25 2.49
70 0.504 6.73 1.35 2.69
80 0.576 7.20 1.44 2.88
90 0.648 7.64 1.53 3.05
100 0.72 8.05 1.61 3.22
100
50 0.4 6.00 1.20 2.40
60 0.48 6.57 1.31 2.63
70 0.56 7.10 1.42 2.84
80 0.64 7.59 1.52 3.04
90 0.72 8.05 1.61 3.22
100 0.8 8.49 1.70 3.39
110
50 0.44 6.29 1.26 2.52
60 0.528 6.89 1.38 2.76
70 0.616 7.45 1.49 2.98
80 0.704 7.96 1.59 3.18
90 0.792 8.44 1.69 3.38
100 0.88 8.90 1.78 3.56
120
50 0.48 6.57 1.31 2.63
60 0.576 7.20 1.44 2.88
70 0.672 7.78 1.56 3.11
80 0.768 8.31 1.66 3.33
90 0.864 8.82 1.76 3.53
100 0.96 9.30 1.86 3.72
130
50 0.52 6.84 1.37 2.74
60 0.624 7.49 1.50 3.00
70 0.728 8.09 1.62 3.24
80 0.832 8.65 1.73 3.46
90 0.936 9.18 1.84 3.67
100 1.04 9.67 1.93 3.87
140
50 0.56 7.10 1.42 2.84
60 0.672 7.78 1.56 3.11
70 0.784 8.40 1.68 3.36
80 0.896 8.98 1.80 3.59
90 1.008 9.52 1.90 3.81
100 1.12 10.04 2.01 4.02
150
50 0.6 7.35 1.47 2.94
60 0.72 8.05 1.61 3.22
70 0.84 8.69 1.74 3.48
80 0.96 9.30 1.86 3.72
90 1.08 9.86 1.97 3.94
100 1.2 10.39 2.08 4.16
Table E-1: PEX pipe expansion arm calculations ½" to 3"
½" PEX pipe expansion arm
Delta
T (ΔT)
Run
(ft)
Delta L
(in)
Flexible arm
length (in)
L1
(in)
L2
(in)
160
50 0.64 7.59 1.52 3.04
60 0.768 8.31 1.66 3.33
70 0.896 8.98 1.80 3.59
80 1.024 9.60 1.92 3.84
90 1.152 10.18 2.04 4.07
100 1.28 10.73 2.15 4.29
¾" 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).
10
50 0.04 2.24 0.45 0.90
60 0.048 2.46 0.49 0.98
70 0.056 2.66 0.53 1.06
80 0.064 2.84 0.57 1.14
90 0.072 3.01 0.60 1.20
100 0.08 3.17 0.63 1.27
20
50 0.08 3.17 0.63 1.27
60 0.096 3.48 0.70 1.39
70 0.112 3.76 0.75 1.50
80 0.128 4.02 0.80 1.61
90 0.144 4.26 0.85 1.70
100 0.16 4.49 0.90 1.80
30
50 0.12 3.89 0.78 1.56
60 0.144 4.26 0.85 1.70
70 0.168 4.60 0.92 1.84
80 0.192 4.92 0.98 1.97
90 0.216 5.22 1.04 2.09
100 0.24 5.50 1.10 2.20
40
50 0.16 4.49 0.90 1.80
60 0.192 4.92 0.98 1.97
70 0.224 5.31 1.06 2.13
80 0.256 5.68 1.14 2.27
90 0.288 6.02 1.20 2.41
100 0.32 6.35 1.27 2.54
50
50 0.2 5.02 1.00 2.01
60 0.24 5.50 1.10 2.20
70 0.28 5.94 1.19 2.38
80 0.32 6.35 1.27 2.54
90 0.36 6.73 1.35 2.69
100 0.4 7.10 1.42 2.84