I wouldn't worry about soaping connections. It'll leak out plenty from
the nozzle thus the hoses/connections won't be under any real
pressure.
I just close the valve on the top of the cylinder when I'm done
welding. These are inert gasses so I've never worried about leaving
any trace in the unit or its hoses.
Eric Russell
Mebane, NC
http://home.mebtel.net/~ejrussell
----- Original Message -----
From: "Jim Stone"
> I was surprised that the instructions didn't call for any thread
> sealer on the gas connections, nor for any testing for leaks (e.g.,
> soapy water).
>
> My second question is pretty simple: When I am through for the
> night, is it necessary to purge the line after shutting off the gas
> cylinder? Or can I just leave it alone and let it leak out slowly
> over time?
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