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Pipe diameter
Type
D
a r
w
o -
u
f t
Liquid
Gas
Cut the L-shaped pipe at the horizontal
straight section, then braze the socket and
pipe procured locally.
Liquid pipe
38VT022
19.1
28.6
Pipe
socket
Cut the L-shaped pipe at the horizontal
straight section, then braze the socket and
pipe procured locally.
Liquid pipe
38VT024
19.1
34.9
38VT026
Pipe
socket
* For drawing out downward, cut the pipe at the position of 15 mm above the brazing part.
CAUTION
Wrap the valves at the gas and the liquid side in wet cloth to keep
it cool and prevent the heat from the torch from damaging it when
connecting the pipe to the valve on the gas and the liquid line.
Coupling size of brazed pipe
Connected section
External size
Internal size
G
K
r o
w
a
d r
D
a r
w
o -
t u
d
o
w
n
w
a
d r
Cut the L-shape pipe at the vertical straight
section, then braze the socket and pipe
procured locally.
Gas pipe
Liquid pipe
Section to
Section to
be cut
be cut
Pipe
socket
Cut the L-shape pipe at the vertical straight
section, then braze the socket and pipe
procured locally.
Liquid pipe
Gas pipe
Section to
Section to
be cut
be cut
Pipe
socket
Valve at the gas side
Valve at the
liquid side
– 13 –
Standard outer dia.
of connected
copper pipe
Gas pipe
6.35
9.52
12.70
15.88
19.05
22.22
25.40
28.58
34.92
38.10
41.28
44.45
Gas pipe
53.98
Selection of pipe materials and sizes
Selection of pipe materials
Materials : Phosphorus deoxidation seam-less pipe. Minimum wall thickness for R410A application.
Soft
Cloth
Torch
Connected section
External size
Internal size
Min. depth of
Standard outer dia.
insertion
(Allowable difference)
C
F
K
G
6.35 (±0.03)
6.45 (±0.03)
7
6
9.52 (±0.03)
9.62 (±0.03)
8
7
12.70 (±0.03)
12.81 (±0.03)
9
8
15.88 (±0.03)
16.00 (±0.03)
9
8
19.05 (±0.03)
19.19 (±0.03)
11
10
22.22 (±0.03)
22.36 (±0.03)
11
10
25.40 (±0.04)
25.56 (±0.04)
13
12
28.58 (±0.04)
28.75 (±0.04)
13
12
34.92 (±0.04)
35.11 (±0.04)
13
12
38.10 (±0.05)
38.31 (±0.05)
15
14
41.28 (±0.05)
41.50 (±0.05)
15
14
44.45 (±0.05)
44.68 (±0.05)
17
14
53.98 (±0.05)
54.22 (±0.05)
17
16
Half hard or hard
OD (Inch)
1/4"
3/8"
1/2"
5/8"
3/4"
7/8"
1"
1-1/8"
1-3/8"
1-5/8"
1-3/4"
2-1/4"
(Unit: mm)
Min. thickness
of coupling
Oval value
0.06 or less
0.50
0.08 or less
0.60
0.10 or less
0.70
0.13 or less
0.80
0.15 or less
0.80
0.16 or less
0.90
0.18 or less
0.95
0.20 or less
1.00
0.24 or less
1.20
0.27 or less
1.35
0.29 or less
1.45
0.31 or less
1.55
0.32 or less
1.80
Minimum wall
OD (mm)
thickness (mm)
6.35
0.80
9.52
0.80
12.70
0.80
15.88
1.00
19.05
1.00
22.22
1.00
25.40
1.00
28.58
1.00
34.92
1.20
41.28
1.45
44.45
1.55
53.98
1.80
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