DO NOT DEFORM PIPE
Be extra careful not to damage, dent, or
deform the pipe while cutting. This will
drastically reduce the heating eciency of the
Step 2: Remove burrs
Burrs can aect the air-tight seal of the refrigerant
piping connection. They must be completely
1. Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove all
burrs from the cut section of the pipe.
Step 3: Flare pipe ends
Proper ﬂaring is essential to achieve an airtight
1. After removing the burrs from the cut pipe,
seal the ends with PVC tape to prevent
foreign materials from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place are nuts on both ends of the pipe. Make
sure they are facing in the right direction
because you can’t put them on or change
their direction after aring. See Fig. 5.3.
4. Remove PVC tape from the ends of the pipe
when ready to perform aring work.
5. Clamp the are form on the end of the pipe.
The end of the pipe must extend beyond the
edge of the are form in accordance with the
dimensions shown in the table below.
PIPING EXTENSION BEYOND FLARE FORM
Outer Diameter of
Ø 0.25” (Ø 6.35mm)
0.0275” (0.7mm) 0.05” (1.3mm)
Ø 0.375” (Ø 9.52 mm) 0.04” (1.0mm) 0.063” (1.6mm)
Ø 0.5” (Ø 12.7mm)
0.04” (1.0mm) 0.07” (1.8mm)
Ø 0.63” (Ø 16.0mm)
0.078” (2.0mm) 0.086” (2.2mm)