Copyright © Fujitsu General America, Inc.
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Flaring
Insulation
Pipe Size Torque
•
Cut pipe with a sharp tube cutter
•
Deburr & clean out shavings
•
Flare with quality tool
•
Set depth properly for good flange
•
Make sure nut pulls easily over flange not scraping threads.
Too big and it will leak.
•
Place a thin film of correct refrigerant oil on male bevel.
•
Hand tighten keeping line straight.
•
Tighten correctly using a torque wrench according to the,
“Tightening torque” chart.
Pipe outside
diameter
in.(mm)
Dimension A
in. (mm)
Flare tool for
R410A, clutch type
Dimension B
in. (mm)
1/4 (6.35)
0 to 0.0197
(0 to 0.5)
23/64 (9.1)
3/8 (9.52)
33/64 (13.2)
1/2 (12.7)
21/32 (16.6)
5/8 (15.88)
25/32 (19.7)
Check if (L) is flared uniformly
and is not cracked or scratched.
Die
Pipe
Flare nut (lbf)
Tightening torque
1/4 - 16 to 18
3/8 - 32 to 42
1/2 - 49 to 61
5/8 - 63 to 75
Flare nut (N·m)
Tightening torque
6.35 - 142 to 159
9.52 - 283 to 372
12.70 - 434 to 540
15.88 - 558 to 664
Blank Cap
Flare Nut
Torque Wrench
Holding
Wrench
Torque
Wrench
All refrigerant pipes and connections
MUST BE INSULATED SEPARATELY
Gas Pipe
Connection Cable
Finishing Tape
Liquid Pipe
Heat Insulation
Gas Pipe
Liquid Pipe
Heat Insulation
Coupler Heat
Insulation (large)
Butting Surfaces
Coupler Heat Insulation (small)
Insulation (long)
Adhesive Tape
(field supplied)
Adhesive Tape
(field supplied)
Adhesive Tape
(field supplied)
