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oxy-acetylene regulator pressures?

77K views 7 replies 6 participants last post by  Hammack_Welding  
It's been a long time since I've had to do a lot of burning on heavy steel. I"m probally wrong but I remember setting acty, regulator on 7psi and the oxy regulator on twenty psi. I am burning 1/4 inch, maybe a litte thicker, and am having trouble. Are my settings correct, or should I use different pressures. Oh yeh, I'm using a Harris tourch with a #3 tip. Anyone have advice? Thanks, Wesley(Wagin)
1/4" is a load for O/A (maybe a little thicker) and a #3 Harris is too small. The Harris chart shows you should be using a #7 tip with 7psi on both sides.