E-
11
ENGLISH
Cutting/Flaring the pipes
CAUTION
In case of welding the pipe, you must weld with nitrogen gas blowing.
Inclined
Damaged Surface
Cracked
Uneven Thickness
Oblique
Rough
Burr
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)
Depth (A)
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”)
0.051 inch
0.070 inch
0.078 inch
0.086 inch
0.086 inch
5
Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
6
Align the pipes and tighten the flare nuts first manually and then with
a torque wrench, applying the following torque.
Valve
Flare nut
Valve cap
Pressure port cap
Valve needle
Pressure port
Wrench(inch)
ft.lb
Wrench(inch)
ft.lb
Wrench(inch)
ft.lb
Wrench(inch)
ft.lb
Wrench(inch)
ft.lb
1/4"
0.67
13.2
0.91
14.8
0.7
11.8~13.3 Allen(hex.) 0.2
6.64
-
0.25
3/8"
0.87
31.0
0.91
14.8
0.7
11.8~13.3 Allen(hex.) 0.2
6.64
-
0.25
1/2"
1.02
40.6
1.14
29.5
0.7
11.8~13.3 Allen(hex.) 0.2
9.59
-
0.25
5/8"
1.14
48.0
1.14
29.5
0.7
11.8~13.3 Allen(hex.) 0.2
9.59
-
0.25
3/4"
1.42
73.6
1.5
29.5
0.7
11.8~13.3 Allen(hex.) 0.2
9.59
-
0.25
Air Marketing Group LLC
141 Kinderkamack Rd, Park Ridge, NJ 07656 Tel: 201-782-1782 Fax: 201-782-1783 Web: www.amgair.com Email: [email protected]
