Mike
a site you might want to look at is
www.tigdepot.net
page 2 gentec 196ar-60 dual flowmeter regulator.
I run a water cooled torch on my machine with a separATE cooling machine and plumb the second argon thru the solenoid on the machine that was for water--allows me to back purge headers, tanks, etc without a hose running argon at a $$$$$rate off a second bottle
also look at the large pirex glass gas torch nozzles
Jerry