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Oxy-Fuel Welding and Cutting Outfit
Set-Up
(Con't)
damaged parts. Have a qualified
technician clean handle or repair
any damage.
3. Select the proper size and type of
welding tip (See Figure 6). Inspect
the welding tip or cutting
attachment for missing O-rings.
Connect welding tip or cutting
attachment to torch handle by
hand-tightening the O-ring
connection.
Figure 4 - Checking O-Rings
Metal Thickness
Tip Size
1/64" - 1/32"
1/32" - 5/64"
1/16" - 3/32"
3/32" - 1/8"
1/8" - 3/16"
3/16" - 1/4"
1/4" - 5/16"
OXY-ACETYLENE CUTTING NOZZLE CHART
Metal Thickness
Nozzle
Size
1/4" - 1/2"
3/8" - 3/4"
OXY-ACETYLENE MULTI-FLAME HEATING TIPS
Tip Size
6
8
Figure 6 - Tip Selection and Regulator Pressure Charts
cone end. The absence of either O-ring
can lead to flashback within the torch
handle or cutting attachment.
4. For cutting attachment, inspect the
tampered seating surfaces on tip
and in torch head. Have a qualified
technician resurface the seat area if
it has dents, burrs or is burned. A
poor seating surface may result in
backfire or flashback.
has damage on the tampered seats.
O-rings
Preheat Gas
Orifices
Oxygen Orifice
Figure 5 - Cutting Tip
WELDING TIP CHART
Oxygen Pressure
P.S.I.G.
Min.
Max
00
3
0
3
1
3
2
3
3
4
4
5
5
6
Oxygen Pressure
P.S.I.G.
Min.
Max
0
30
35
1
30
35
Acetylene
Pressure Range
P.S.I.G.
4 - 6
8 - 12
There must be two
(2) O-rings on the
Do NOT use a tip
or torch head that
Tapered
Seating
Surfaces
Acetylene Pressure
P.S.I.G.
Min
5
3
5
3
5
3
5
3
7
3
10
4
12
5
Acetylene Pressure
P.S.I.G.
Min
3
3
Oxygen
Pressure Range
P.S.I.G.
8 - 11
10 - 18
4
5. Inspect the cutting or welding tip
opening. Spatter can stick on or in
this opening. Remove spatter with
the tip cleaner. Tighten cutting tip
to torch head securely with wrench.
6. Purge system and check
connections.
PURGING THE SYSTEM
Purge only in a well ventilated area. Do
not direct flow of any gas towards any
person or flammable materials. Do not
purge near open flames or any source
of ignition.
1. Turn regulator adjusting keys
counter-clockwise to disengage
regulator (no-flow).
regulator adjusting key engaged. This
condition can allow high pressure gas
to damage the internal parts of the
regulator, which can result in explosion,
fire or damage to equipment, personal
injury or property damage.
opposite the regulator when opening
the cylinder valve. Keep the cylinder
valve between you and the regulator.
NEVER stand in front of or behind a
Max
regulator when opening the cylinder
valve.
5
2. Close both torch handle valves. If
5
using the cutting attachment, open
5
the oxygen torch handle valve
5
completely and close the preheat
6
valve on the cutting attachment.
7
8
3. Slowly open the oxygen cylinder
valve until it is completely open.
Turn oxygen pressure adjusting key
clockwise and set to 5 PSI.
4. Open the torch oxygen valve and
Max
preheat valve, depress the cutting
5
lever if used and adjust regulator to
proper outlet pressure for welding
5
application (see Figure 6). Close
torch or preheat valve after
purging.
valve more that one (1) turn. Keep the
cylinder valve wrench, if one is
required, on the cylinder valve so that
the cylinder may be turned off quickly,
if necessary.
Never open
cylinder valve with
Stand to the side
of the cylinder
Do NOT open
acetylene cylinder
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