FILE NO.
d) Flare Processing
Make certain that a clamp bar and copper pipe have been cleaned.
By means of the clamp bar, perform the flare processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according to the type of flare tool. When using a conventional flare tool, be sure to secure “dimen- sion A” by using a gauge for size adjustment.
ØD A
Fig.
| Outer |
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| A in. (mm) |
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Nominal |
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Thickness |
| Conventional flare tool | |||||
diameter | Flare tool for R410A | ||||||
diameter | in. (mm) | ||||||
(mm) |
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in. |
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| clutch type | Clutch type | Wing nut type | ||
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1/4 | 6.35 | 0.0315 (0.8) |
| 0 to 0.0197 (0 to 0.5) | 0.0394 to 0.0591 | 0.0591 to 0.0787 | |
| (1.0 to 1.5) | (1.5 to 2.0) | |||||
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3/8 | 9.52 | 0.0315 (0.8) |
| 0 to 0.0197 (0 to 0.5) | 0.0394 to 0.0591 | 0.0591 to 0.0787 | |
| (1.0 to 1.5) | (1.5 to 2.0) | |||||
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1/2 | 12.70 | 0.0315 (0.8) |
| 0 to 0.0197 (0 to 0.5) | 0.0394 to 0.0591 | 0.07874 to 0.0984 | |
| (1.0 to 1.5) | (2.0 to 2.5) | |||||
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| Outer |
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| A in. (mm) |
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Nominal |
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| Thickness |
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| Conventional flare tool | ||||||||
| diameter |
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| Flare tool for R22 |
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diameter |
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in. |
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| clutch type |
| Clutch type |
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| Wing nut type | |||
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1/4 |
| 6.35 |
| 0.0315 (0.8) |
| 0 to 0.0197 (0 to 0.5) |
| 0.0197 to 0.0394 |
| 0.0394 to 0.0591 | |||||
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| (0.5 to 1.0) |
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| (1.0 to 1.5) | ||||||||
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3/8 |
| 9.52 |
| 0.0315 (0.8) |
| 0 to 0.0197 (0 to 0.5) |
| 0.0197 to 0.0394 |
| 0.0394 to 0.0591 | |||||
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| (0.5 to 1.0) |
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| (1.0 to 1.5) | ||||||||
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1/2 |
| 12.70 |
| 0.0315 (0.8) |
| 0 to 0.0197 (0 to 0.5) |
| 0.0197 to 0.0394 |
| 0.0591 to 0.0787 | |||||
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| (0.5 to 1.0) |
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| (1.5 to 2.0) | ||||||||
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| Table |
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Nominal | Outer diameter |
| Thic kness |
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| Dimension | in. (mm) |
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| Flare nut width | ||
diameter |
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| (mm) |
| in. (mm) |
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| A | B |
| C | D |
| in. (mm) | ||
in. |
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1/4 | 6.35 | 0.0315 (0.8) |
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| 0.358 (9.1) | 0.362 (9.2) | 0.256 (6.5) | 0.512 (13) | 0.669 (17) | ||||||
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3/8 | 9.52 | 0.0315 (0.8) |
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| 0.520 (13.2) | 0.531 (13.5) | 0.382 (9.7) | 0.787 (20) | 0.866 (22) | ||||||
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1/2 | 12.70 | 0.0315 (0.8) |
| 0.630 (16.0) | 0.653 (16.6) | 0.508 (12.9) | 0.906 (23) |
| 1.024 (26) | ||||||
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– 10 –