Yesterday I started getting "flash back" to the fuel
adjustment valve on the torch handle. Makes it kind of hard to
shut the valve off through all those flames! Something tells me
this is not the appropriate way for the torch to be functioning!
The valves that controls the fuel and oxygen flows are held into the
torch body with a nut like devise. If this is loose as you adjust
the flows the nut will turn a little. This will give you an
inconsistent flame adjustment and the flame may vary as you move the
torch and the valve assemble moves a little. Even worse the fuel
will leak out around this nut and it can ignite!!!
It sounds as if this is your problem. You can adjust the nut's
tension, but since the torch is so new, I would suggest returning
it. The torch tip must also be screwed on tightly.
This problem can be made worse by setting the fuel pressure too
high. Set your pressure very low by using the regulator and ignite
your torch and adjust the flame to as large as it will go with the
largest tip. If this flame is too small for your work, turn the
torch off and increase the pressure very little and repeat. Adjust
both the oxygen and the fuel pressures to get the largest flame that
you need from the torch. It may surprise you that the pressures are
I hope that this helps, let us know how this comes out for you so
that we can all benefit from the experience.