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5. Check if you flared the pipe correctly. There are some examples of incorrectly flared pipes below.
Correct
6. Align the pipes and tighten the flare nuts first manually and then with
a torque wrench, applying the following torque.
Outer diameter
(mm)
6.35
9.52
12.70
15.88
• In case of needing brazing, you must work with Nitrogen gas blowing.
CAUTION
Inclined
Damaged Surface
Connection Torque
kgf•cm
N•m
140~180
14~18
350~430
34~42
500~620
49~61
690~830
68~82
Cracked
Flare
Flare shape
dimension
(mm)
8.70~9.10
12.80~13.20
16.20~16.60
19.30~19.70
Uneven Thickness
(mm)
R 0.4~0.8
15
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