The key difference that Petrogen developed was to modify the hardware to deliver the fuel safely to the cutting tip. Their design utilizes a 2.5-gallon tank, from which the gasoline remains in a liquid form until it reaches the torch tip in the form of a confined liquid. Confined liquid gasoline does not burn and therefore acts as its own backflash arrester. The gasoline vaporizes inside the tip, thereby keeping the torch head cool for safer operation and eliminating backflash. Furthermore, check valves prevent spillage or excess pressure buildup.
Gasoline is more readily and widely available than acetylene.
In a single pass, you can cut steel contaminated with rust, dirt, paint, and scale. No preliminary scraping or grinding is needed. It takes less than one day of operating the oxy-gasoline cutting torch to offset its higher cost. Faster cutting speeds translates to less labor hours, which means lower costs. The Petrogen system is ASME coded, meets OSHA requirements, and is approved by Underwriter's Laboratory.