412 Modern Welding Stainless steel ball-type valves Torch body Oxygen cutting lever Slip-in heating, welding tips and cutting attachment (wrench not needed) Oxygen cutting valve Oxygen preheat valve Check valve Stainless steel tubes Replaceable seats in tip Slip-in tip Gases mix in tip Tip nut Fuel gas Oxygen Figure 14-5. A sectioned view of cutting torch attachment mounted on a torch body. The preheat gases are mixed in the tip of the torch where it connects into the torch head. (Smith Equipment)