Seek the operating specifications of small air guns, white oil guns and gas welding guns in jewelry processing.

The gas you are talking about should be liquefied petroleum gas. Oxygen is usually added to melt precious metals. The welding torch and cutting torch for acetylene and oxygen have the same specifications. The white oil should be 120 gasoline, and the torch of 120 gasoline is mixed with air, mainly to prevent over-fueling, gasoline spraying and fire. If the air is supplied by an air compressor, the air pressure should be less than the allowable pressure of the gasoline tank, otherwise, the gasoline tank will burst and cause a fire. Water-oxygen welding machine, look at the instructions, there should be operating specifications. Mainly to prevent tempering, good water and oxygen machines have parts to prevent tempering. This torch, like acetylene, liquefied petroleum gas and oxygen, should be protected from backfire. Oxygen should be banned from entering oil. You can refer to the general operating specifications of gas welding.