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APPENDIX C — Reference Tables & Figures
Plumbing Movement
Figure 20 | Flexible PVC Offset
(2X) Straight
Line Plumbing
Fixed
Support
Expansion Dimensions Chart Flexible PVC Line Offsets
Length of Pipe (ft)
Thermal Expansion (in)
Leg L/4 (in) 4-1/2
Leg L/2 (in)
Single Offset Dist L (in)
Exposed Flexible PVC (in) 3-13/16 4-11/16
Table 6 | Thermal Expansion of PVC Piping with Flexible PVC Offset
To accommodate for long plumbing runs or bank movement using a Flexible PVC Line, refer to the table below. Since the plumbing can be mounted
as Fixed or Guide supports, a Conventional Offset can also be useful to absorb some or all of the movement in plumbing and solar banks. Other indus-
try standard methods are also acceptable.
*Note: This method requires thorough UV protection of the Flexible PVC Hose segment. (See Phase II, Pool Plumbing)
Figure 21 | Doubled Coupler Offset
(2X) Straight
Line Plumbing
Fixed
Support
Expansion Dimensions Chart for PVC Line Offsets with 3" Couplers in Line
Length of Pipe (ft)
Thermal Expansion (in)
Leg L/4 (in) 8-11/16 9-1/4
Leg L/2 (in) 17-3/8 18-3/8 19-11/16 20-11/16 21-13/16 22-7/8 23-7/8
Single Offset Dist L (in)
Table 7 | Thermal Expansion of PVC Piping with PVC and Coupler Offset
To accommodate for long plumbing runs or bank movement using a PVC Line and two Couplers in the offset, refer to the table below. Since the
plumbing can be mounted as Fixed or Guide supports, a Conventional Offset can also be useful to absorb some or all of the movement in plumbing and
solar banks. Other industry standard methods are also acceptable.
Guide
Supports
Length of Pipe
Most Installations Most Installations, with Bank Movement
10
20
30
5/8
13/16
1-1/4
5
5-5/8
9
10
11-5/16
18
20
23
6
Guide
Supports
Length of Pipe
Most Installations Most Installations, with Bank Movement
10
20
30
5/8
13/16
1-1/4
9-13/16
35
37
39
*Flexible PVC Hose
40
50
60
1-1/2
1-13/16
2-1/8
6-1/4
6-11/16
7-1/4 7-13/16 8-5/16 8-13/16 9-5/16
12-5/16
13-3/8
14-3/8 15-1/2 16-5/8 17-5/8 18-11/16
25
27
29
7-1/8
8-1/8
9-1/4 10-5/16 11-5/16 12-3/8
2X Hose Coupler
Assembly with Pipe
Adapters and PVC
40
50
60
1-1/2
1-13/16
2-1/8
10-3/8
10-7/8
11-3/8
41
44
46
Fixed
Support
(~4ft)
T=80°F
Uncommon Installations
70
80
90
2-3/8 2-11/16
3
3-5/16
31
33
35
13-3/8
Fixed
Support
(~4ft)
T=80°F
Uncommon Installations
70
80
90
100
2-3/8 2-11/16
3
3-5/16
12
12-1/2
13
13-1/2
25
26
27-1/8
48
50
52
54
®
100
37
35
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