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| Pipe Size | 1/8 | 1/4 | 3/8 | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | 2 1/2 | 3 | 4 |
| Dimension A | -- | 1/2 | 9/16 | 5/8 | 11/16 | 13/16 | 7/8 | 7/8 | 15/16 | -- | -- | -- |
| Dimension B | -- | 5/32 | 3/16 | 3/16 | 1/4 | 1/4 | 5/16 | 3/8 | 7/16 | -- | -- | -- |
| Dimension C | -- | 5/8 | 11/16 | 7/8 | 1 1/16 | 1 3/8 | 1 3/4 | 2 | 2 1/2 | -- | -- | -- |
| Approx. Wt. # | -- | .03 | .05 | .08 | .06 | .35 | .56 | .65 | 1.26 | -- | -- | -- |
** Plugs and bushings are not identified by class. They may be used for ratings up to and including class 6000.