42
Cutting/Flaring the Pipes
1.
Make sure that you prepared the required tools. (pipe cutter, reamer, flaring tool and pipe holder)
2.
If you want to shorten the pipe, cut it using a pipe cutter ensuring that
the cut edge remains at 90° with the side of the pipe. There are some
examples of correctly and incorrectly cut edges below.
90°
Oblique
Rough
Burr
Pipe cutter
Pipe
3.
To prevent a gas leak, take care not to allow burrs to enter the pipe and clean the flare.
4.
Carry out flaring work using flaring tool as shown below.
Flaring tool
Clutch type
Wing nut type
A
Die
Copper pipe
Yoke
Die
Copper
pipe
Flare nut
Flare
Pipe
Outer diameter [D (mm)]
Depth [A (mm)]
Flare tool for R-410A
clutch type
Conventional flare tool
Clutch type
Wing nut type
6.35
0~0.5
1.0~1.5
1.5~2.0
9.52
0~0.5
1.0~1.5
1.5~2.0
12.70
0~0.5
1.0~1.5
1.5~2.0
15.88
0~0.5
1.0~1.5
1.5~2.0
