FILE NO. SVM-10019

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. 3-2-1 Flare processing dimensions
Table 3-2-3 Dimensions related to flare processing for R410A

 

Outer

 

 

 

A in. (mm)

 

Nominal

 

 

 

 

 

Thickness

 

Conventional flare tool

diameter

Flare tool for R410A

diameter

in. (mm)

(mm)

 

 

in.

 

 

clutch typeClutch typeWing nut type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)

 

 

 

 

 

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)

 

 

 

 

 

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)

 

 

 

 

 

Table 3-2-4 Dimensions related to flare processingf or R22

 

 

Outer

 

 

 

 

 

 

 

 

A in. (mm)

 

 

Nominal

 

 

Thickness

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Conventional flare tool

 

diameter

 

 

 

Flare tool for R22

 

diameter

 

 

in. (mm)

 

 

 

 

(mm)

 

 

 

 

 

 

 

 

 

in.

 

 

 

 

 

 

clutch type

 

Clutch type

 

 

Wing nut type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

(0.5 to 1.0)

 

 

(1.0 to 1.5)

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

(0.5 to 1.0)

 

 

(1.0 to 1.5)

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

(0.5 to 1.0)

 

 

(1.5 to 2.0)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 3-2-5 Flare and flare nut dimensions for R410A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nominal

Outer diameter

 

Thic kness

 

 

 

 

Dimension

in. (mm)

 

 

 

Flare nut width

diameter

 

 

 

 

 

 

 

 

 

 

 

 

(mm)

 

in. (mm)

 

 

 

A

B

 

C

D

 

in. (mm)

in.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/4

6.35

0.0315 (0.8)

 

 

0.358 (9.1)

0.362 (9.2)

0.256 (6.5)

0.512 (13)

0.669 (17)

 

 

 

 

 

 

 

 

 

 

3/8

9.52

0.0315 (0.8)

 

 

0.520 (13.2)

0.531 (13.5)

0.382 (9.7)

0.787 (20)

0.866 (22)

 

 

 

 

 

 

 

 

 

 

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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