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Smith oxy-acetylene Torch problem


#1

The oxygen on my Smith oxy-acetylene torch is acting as though the
line is plugged. A small amount of oxygen is getting through, but not
enough to use the torch. There is plenty of oxygen left according to
the gauge, so I don’t think this is the source of the problem.

Any suggestions?

Thanks.
Alana Clearlake


#2
    The oxygen on my Smith oxy-acetylene torch is acting as though
the line is plugged. 

Remove line and torch tip. Open the oxy valve on the torch. Set
torch and hose aside for 10 minutes for some of the oxygen to go
away. Blow through it to test.

    A small amount of oxygen is getting through, but not enough to
use the torch. There is plenty of oxygen left according to the
gauge, so I don't think this is the source of the problem. 

Problem might be the regulator. The gauge could be stuck showing gas
in the cylinder when there is none. With the hose still off, try
easing a little gas through the regulator. You should be able to get
it up so you hear a hiss. Do not try to service a regulator
yourself! (And, of course, never stand in front of the regulator
when opening the oxygen valve, and make sure the regulator is closed
when you open the valve – forgetting this could damage the
regulator. Do not try to repair a regulator yourself! Take it in to
the welding supply house to be fixed.

mbstevens


#3

Try unseating the OXY (green) valve from the torch body, then turn
on your Oxygen, there may be some crud in the vlave hole plugging
the supply, My guess though is that it would be a problem with the
regulator, not actually the torch, even though we don’t normally use
medically approved Oxygen, both come out of the same filling
apparatus, The valves unscrew quite easy and there is no real danger
in removing and reinstalling the valve, you can also adjust the
tension for turning the valve by the amount you tighten it if you
get flow through the valve opening then inspect the point are of the
valve and the plastic/Nylon or teflon seat, it may have a shred of
it’s self in the oriffice,

If no flow there then disconnect the Oxy hose at the regulator and
see if you have flow there, as a saftey measure don’t do any of
these near an open flame or near any thing that could generate
sparks, also first make sure yor output dial is showing pressure and
that some one hasn’t backed off your pressure on you.

Kenneth Ferrell
www.shadras.com


#4

Hi Alana. With the tank valve closed you may try disconnecting the
hose from the regulator. Then crack the tank valve and see if you
get better flow at that point. If it flows freely the problem is in
the hose or torch body. If not the problem is in the valve or
regulator.

Regards, David


#5

Dear Alana,

First remove your tip and listen to the flow of the gas and oxygen
separately, then see if the line pressure changes on the dial.
Remember to turn the “T” bar on the regulator clockwise to increase
pressure and counter clockwise to decrease the line pressure. Also
keep the oxygen adjustment knob open when doing this.

If this doesn’t work then its probably a regulator issue or a valve
issue in the oxygen adjustment knob in the handle. I would call
Smith Equipment (1-800-328-3363) and ask for their technical
support. They should be able to trouble shoot the problem. Smith
stands behind their product, is very helpful and is truly a great
company to work with.

All the best.

Thackeray Taylor
Rio Grande Technical Support.


#6

Put the tip in your ultrasound and clean it…

Ringman


#7

Hi , just dropped in to mention that there is a certain spider that
loves to move into torch tips. I am not sure where your work area is,
but garages, sheds, sometimes regular studios, can be “hit” this way.
They must be cleaned out by whatever means it takes to do so. Hope
this helps you and others to consider this possibility when faced
with this problem.

Mb.