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Cutting or Extending the Pipe
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.
3
To prevent a gas leak, remove all burrs at the cut edge of the pipe using
a reamer.
4
Carry out flaring work using flaring tool as shown below.
Flaring tool
Clutch type
Wing nut type
Outer diameter
(mm)
6.35
9.52
12.70
15.88
5
Check if you flared the pipe correctly. There are some examples of
incorrectly flared pipes below.
Inclined
Damaged Surface
6
Align the pipes and tighten the flare nuts first manually and then with a torque
wrench, applying the following torque.
Outer diameter
Connection
(mm)
Torque(kgf•cm)
6.35
9.52
12.70
15.88
In case of needing brazing, you must work with Nitrogen gas blowing.
AVXWN@@_IM_E_31755_5.08.10.indd 13
Oblique
Rough
A
Die
Copper pipe
A(mm)
Conventional flare tool
Flare tool for
R410A clutch type
Clutch type
0~0.5
1.0~1.5
0~0.5
1.0~1.5
0~0.5
1.0~1.5
0~0.5
1.0~1.5
Cracked
Flare dimension
(mm)
145~175
8.70~9.10
333~407
12.80~13.20
505~615
16.20~16.60
630~769
19.30~19.70
Burr
York
Die
Copper pipe
Flare nut
Wing nut type
1.5~2.0
1.5~2.0
1.5~2.0
1.5~2.0
Uneven Thickness
Flare shape
(mm)
R 0.4~0.8
13
E-
2010-5-8 10:34:53
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