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705.18 Caulking Ferrules
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Caulking ferrules shall be of copper alloy and shall be in accordance with Table 705.18.
CAULKING FERRULE SPECIFICATIONS
| PIPE SIZES (inches) | INSIDE DIAMETER (inches) | LENGTH (inches) | MINIMUM WEIGHT EACH |
| 2 | 21/4 | 41/2 | 1 pound |
| 3 | 31/4 | 41/2 | 1 pound 12 ounces |
| 4 | 41/4 | 41/2 | 2 pounds 8 ounces |
For SI: 1 inch = 25.4 mm, 1 ounce = 28.35 g, 1 pound = 0.454 kg.
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