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Cutting/Flaring the Pipes
1
Make sure that you have the required tools available (pipe cutter, reamer,
flaring tool and pipe holder).
2
If you wish to shorten the pipes, cut it with a pipe cutter, taking care to
ensure that the cut edge remains at a 90° angle with the side of the pipe.
Refer to the illustrations below for examples of edges cut correctly and
incorrectly.
3
To prevent any gas from leaking out, remove all burrs at the cut edge of the
pipe, using a reamer.
4
Slide a flare nut on to the pipe and modify the flare.
Outer Diameter (D)
6.35 mm (1/4")
9.52 mm (3/8")
12.70 mm (1/2")
15.88 mm (5/8")
19.05 mm (3/4")
22.23 mm (7/8")
5
Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
Inclined
Damaged Surface
6
Align the pipes and tighten the flare nuts first manually and then with
a torque wrench, applying the following torque.
Valve
Flare nut
Wrench (mm) N•m
1/4"
17
18
3/8"
22
42
1/2"
26
55
5/8"
29
65
3/4"
36
100
C C
C C
A A
A A
U U
U U
T T
T T
I I
I I
O O
O O
N N
N N
In case of welding the pipe, you must weld with nitrogen gas blowing.
Oblique
Rough
Depth (A)
1.3mm
1.8mm
2.0mm
2.2mm
2.2mm
2.2mm
Cracked
Valve cap
Pressure port cap
Wrench (mm) N•m
Wrench (mm) N•m
23
20
18
23
20
18
29
40
18
29
40
18
38
40
18
Burr
Uneven Thickness
Valve needle
Wrench (mm)
16~18
Allen (hex.) 5
16~18
Allen (hex.) 5
16~18
Allen (hex.) 5
16~18
Allen (hex.) 5
16~18
Allen (hex.) 5
I
I
NSTALLING THE
NDOOR
Pressure port
N•m
Wrench (mm) N•m
9
-
0.34
9
-
0.34
13
-
0.34
13
-
0.34
13
-
0.34
U
NIT
17
E-
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