13
5. Check if you ared the pipe correctly. There are some examples of incorrectly ared pipes below.
InclinedCorrect Damaged Surface Cracked Uneven Thickness
6. Align the pipes and tighten the are nuts rst manually and then with
a torque wrench, applying the following torque.
Outer diameter
(D, mm)
Connection
Torque(N•m)
Flare dimension
(A, mm)
Flare shape
ø6.35 14~18 8.7~9.1
R 0.4~0.8
A
D
90° ±2°
45° ±2°
ø9.52 34~42 12.8~13.2
ø12.70 49~61 16.2~16.6
ø15.88 68~82 19.3~19.7
ø19.05 100~120 23.6~24.0
❈ 1N•m=10kgf•cm
• In case of needing brazing, you must work with Nitrogen gas blowing.
CAUTION
NASA_Big Duct_AM@@@FNHDEH@_IM_03864A-05_EN.indd 13 2016-04-01 오후 5:29:41
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