Some weld post gas flows are pre set and cannot be altered, is there a particular reason you want to turn it down
had a quick look and it doesn't look like that machine has post gas control, at least you wanted to turn it down not up, so it'd only save a little gas anyway won't compromise the welds![]()
tacking up 16swg sheets to make ducting, lots of ducts and lots of tacks. si,mply to save on the use of gas