Oxy-Fuel Cutting. I. Parts and Adjustments. Torch Cutting Tip Pre-heat holes Cutting hole. Three control knobs. Preheat O2 valve Preheat Propylene valve Cutting oxygen valve Lever. Lighting and Adjusting Torch. Propylene valve open slightly Light torch with striker
(NOTE) Propylene = 10 psi, Oxygen = 40 psi
Tank valves are open fully on both gases.