NO NO NO NO NO........
They should be all the way LOOSE..... All the way counter-clockwise. (left)...
Turning them clockwise (to right) all the way turns them on FULLY... It also may damage them by doing this... They should be backed off till you can feel no tension on adjuster (knob or "T" bar) almost to point they fall out of regulator body...
Here is documentation on use and care of regulators you should read up on before trying to use....
http://www.artglassanswers.com/forum/viewtopic.php?t=8
http://www.arrowsprings.com/html/con...egulators.html
After turning on tanks, open torch valves (one at time) and then adjust regulator (one at time) to desired pressure, once you have settings on regulators done, you can open up torch valves and fire off torch and adjust torch "settings"....
Don't know what torch you have but you may want to set fuel at 5-7 psi and oxygen at 10-12 psi... This is usually a good starting place. You may want to fine tune setting later.
Dale