Army Develops System To Convert Liquid Oxygen Into Low Pressure Oxygen Gas Army Develops System To Convert Liquid Oxygen Into Low Pressure Oxygen Gas The army engineers have developed a mobile low-pressure oxygen system which converts liquid oxygen to oxygen gas. The system to convert liquid oxygen is economically viable and is safe to operate, officials said. New Delhi: The Indian Army said today it has found a solution for efficient conversion of liquid oxygen to low pressure oxygen gas that can be given to COVID-19 patients at their hospital beds. "Over seven days, the team of Army engineers in-direct consultation and material support from Council of Scientific and Industrial Research and Defence Research and Development Organisation put together a working solution using vaporisers, pressure relief valves and liquid oxygen cylinders," the Army's statement said.