3 Piping work and
refrigerant charge
97
3
SMGB0077 rev.0 - 01/2013
3.4.3 Diameters of the copper refrigeration pipes
Nominal diameter
Thickness mm Supply
mm Inches
Ø6.35 1/4 0.80 Roll
Ø9.52 3/8 0.80 Roll
Ø12.70 1/2 0.80 Roll
Ø15.88 5/8 1.00 Roll
Ø19.05 3/4 1.00 Pipe
Ø22.20 7/8 1.00 Pipe
Ø25.40 1 1.00 Pipe
Ø28.60 1-1/8 1.00 Pipe
3.4.4 Preparing and cutting copper refrigeration pipes
Preparation
Clean the area where the copper refrigeration pipe preparation work is to be carried out. It must particularly be free of
waste, soil, wood or metal shavings and, in general, any substance that could enter the ends of the pipe during handling.
The copper pipe must be clean and have no remains of adhesive, cement, dust or other substances adhered to it.
Where the copper pipe is supplied in rolls, îš¿t a cap on the end
and unwind it while it is resting on the ground so that the turning
movement of the roll as it is unwound forms a straight pipe.
N O T E
• The rolls of copper refrigeration pipe are normally supplied with caps on their ends.
• Where the roll of pipe does not come supplied with caps, check that the inside of the pipe is clean. If it is not,
use a new roll of pipe.
• It is also possible to cover the end of the pipe temporarily using high quality adhesive tape.
• Do not wind and unwind the pipe continuously, as the properties of the copper for refrigeration pipes are
altered, making it more rigid and brittle.
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