E-
20
Cutting/Flaring the Pipes
Connect the pipe within 50m and cutting pieces will not be gone
into the pipe as being clean to pipe section.
Make sure that you have the required tools available (pipe cutter, reamer,
flaring tool and pipe holder).
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.
1
2
To prevent any gas from leaking out, remove all burrs at the cut edge of the
pipe, using a reamer.
3
Slide a flare nut on to the pipe and modify the flare.
Outer Diameter(D)
Depth (A)
9.52 mm (3/8")
1.8 mm
19.05 mm (3/4")
2.2 mm
4
Align the pipes and tighten the flare nuts first manually and then with
a torque wrench, applying the following torque.
Outer Diameter
Torque
9.52 mm (3/8")
250~280 kgf•cm
19.05 mm (3/4")
990~1210 kgf•cm
6
Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
5
90
O
Oblique
Rough
Burr
Inclined
Damaged Surface
Cracked
Uneven Thickness
◆
C
C
C
C
A
A
A
A
U
U
U
U
T
T
T
T
II
II
O
O
O
O
N
N
N
N
In case of welding the pipe, you must weld with nitrogen
gas blowing.
Summary of Contents for DH60 T Series
Page 44: ......
