[TheForge] Oxy/Propane reprise

[Andy Gladish]

On Tue, 10 Nov 2009 11:16:07 -0800, Paul N <crosspein at sbcglobal.net> wrote:

> I'm still a little unclear on the 2 O2 valves. I had assumed that the
> bottom valve controlled the mixture of the preheat, which left the other
> for the cutting jet. Obviously, that's not the way it works.

Think of it this way: The O2 valve at the base of the torch turns on  
everything O2 related- flame and cutting jet. The one at the top regulates  
your flame only. Cutting jet lever is on/off and regulated by supply  
pressure (at the tank).