Sundance® Spas Pump Unions and Plumbing

Unions, Tailpieces, Nuts and Orings for Sundance Spas Plumbing
How to Determine the size of PVC
PVC Measurements are confusing when you are trying to figure out what you have. PVC Pipe comes in 1/2, 3/4, 1, 1 1/2, 2 and 2 1/2 inch, But when you measure across the pipe (outside diameter) you do not get what you think. Below we have provided the Sizes of PVC pipe and the corresponding actual Outside Dimension of the pipe size. 
Pipe Size         Actual Size
1/2 inch             7/8 inch
3/4 inch             1 inch
1 inch                1 5/16 inch
1 1/2 inch          1 7/8 inch
2 inch                2 3/8 inch
2 1/2 inch          2 7/8 inch