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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 R32 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
"dimension A" by using a gauge for size
adjustment.
Table 3-2-3 Dimensions related to flare processing for R32(R410A)
Outer
Nominal
diameter
diameter
(mm)
1/4
6.35
3/8
9.52
1/2
12.70
5/8
15.88
Table 3-2-4 Dimensions related to flare processing for R22
Outer
Nominal
diameter
diameter
(mm)
1/4
6.35
3/8
9.52
1/2
12.70
5/8
15.88
Nominal
Outer diameter
diameter
1/4
3/8
1/2
5/8
Thickness
(mm)
0.8
0.8
0.8
1.0
Thickness
(mm)
0.8
0.8
0.8
1.0
Table 3-2-5 Flare and flare nut dimensions for R32(R410A)
Thickness
(mm)
(mm)
6.35
0.8
9.52
0.8
12.70
0.8
15.88
1.0
Fig. 3-2-1 Flare processing dimensions
Flare tool for R32
clutch type
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
Flare tool for R22
clutch type
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
Dimension (mm)
A
B
9.1
9.2
13.2
13.5
16.6
16.0
19.7
19.0
- 28 -
FILE NO. SVM-18052-1
ØD
A
A (mm)
Conventional flare tool
Clutch type
Wing nut type
1.0 to 1.5
1.5 to 2.0
1.0 to 1.5
1.5 to 2.0
1.0 to 1.5
2.0 to 2.5
1.0 to 1.5
2.0 to 2.5
A (mm)
Conventional flare tool
Clutch type
Wing nut type
0.5 to 1.0
1.0 to 1.5
0.5 to 1.0
1.0 to 1.5
0.5 to 1.0
1.5 to 2.0
0.5 to 1.0
1.5 to 2.0
Flare nut width
(mm)
C
D
6.5
13
9.7
20
12.9
23
16.0
25
17
22
26
29
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