Hi,
I am setting up my bench and need some answers about my torch. When
I picked up the hoses and oxy tank, etc., I was told that I needed
to “blow out the lines”. I take this to mean that the hoses must be
flushed. My question is how and why would I want to do this
operation? Is it necessary, or can I hook everything up, test for
leaks, and run the torch? And, do I do it with a gas or liquid?
Finally, what kind of eye protection would I need to be running the
torch for soldering/minor casting? It’s a Hoke, oxy/propane unit
with a special head for casting. Any and all help would be
appreciated.
Richard (in soggy and dank Michigan)
Hello, I recently purchased a Liitle Torch for oxy/propane and the
instructions said you must do this proceedure. It involves first
making sure there is no petroleum of any sort on the tanks threads,
regulators, your hands, hose connection threads, or anywhere nearby
what so ever. Blowing out the regulators to eliminate any
particulate. Attaching regulators then the hoses. Next would be to
close the valves on the torch handle itself then open the fuel
regulator only, then open fuel valve on the torch only and let the
fuel flow. How much volumn and how long depends on your equipment.
The procedure should be repeated for the oxy while keeping the fuel
valve closed. This procedure provents an internal explosion do to
reverse flow. BEFORE YOU DO ANYTHING LET ALONE TAKE MY ADVICE IS GET
AHOLD OF THE INSTRUCTIONS FOR YOUR EQUIPMENT. THIS IS A POTENTIALLY
DANGEROUS PROCEDURE.
Julie
Hi Richard, Regarding blowing your hose… The reason for this is
that if there are any particles of rubber or dirt in the lines they
can plug up your orifices. That’s the reason for the purge. To do
this, I would recommend dry compressed air. A local machine shop or
welding supply store could probably help you out with this. A
welding supply shop can be a valuable source of and
assistance.
Now about protecting your eyes… Safety glasses/goggles should be
fine for most work. If you ever plan to use oxy/acetylene, you will
need welders goggles. Oxy/acetylene burns much brighter and is used
for welding steel and/or platinum work.
Good luck. Hope this helps.
David Nitschke (from soggy damp Southern Ontario)