4-24
SET-UP AND SAFE OPERATING PROCEDURES
0056-0114
flame composition. Like the cutting attachment cone end, the welding / heating nozzle has two O-
rings. They maintain the separation of gases prior to the point at which mixing occurs. They allow a
hand-tight connection of the welding nozzle and the torch handle.
WARNING
There must always be two O-rings on the cone end. The absence or damage of either
of these O-rings allows premixing and leaks of oxygen and fuel gases. This can lead to
a backfire or sustained backfire within the torch handle.
Coupling Nut
The welding / heating nozzle coupling nut is similar in design to the coupling nut on the cutting
attachment. A locking ring in the coupling nut mates with a groove in the forward portion of the
welding nozzle mixer, thus allowing the nut to protect the cone end and O-rings (see Figure 7, page
24). Examine the O-rings by twisting and pushing the coupling nut away from the cone end.
CAUTION
Use only genuine VICTOR
®
, Cutskill
®
, or Firepower
®
torch handles, welding nozzles and
multi-flame nozzles to ensure leak-free connections and balanced equipment.
Oxy-Fuel Apparatus
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