21 May 2012
Sunset: 9:04 pm
22 May 2012
Sunrise: 5:08 am
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The reference in inches do not relate to the actual size of your pipe. The table below shows the outside diameter of schedule 40 pipe, that is common in most hot tubs made in the US and Canada, some chinease spas also use these dimentions:
| NPS |
Outside Diameter |
| 3/8 inch |
0.55 inches (14 mm) |
| 1/2 inch |
0.82 inch (21 mm) |
| 3/4 inch |
1.10 inches (28 mm) |
| 1 inch |
1.31 inch (33 mm) |
| 1-1/4 inch | 1.66inches (42 mm) |
| 1-1/2 inch |
1.90 inch (48 mm) |
| 2 inch |
2.37 inches (60 mm) |
| 2-1/2 inch |
2.87 in (73 mm)
|
| 3 inch |
3.50 in (89 mm)
|
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