Why are there two pressure gauges on the gas cutting oxygen cylinder? How much is the general adjustment?

There are two pressure gauges on the gas cutting acetylene bottle, one is to display the air pressure in the bottle, and the other is to display it after decompression. Adjust oxygen to 0.5-0.7 and acetylene to 0.3-0.5.

Gas cutting (pinyin: qi ē g ē; English: Gas cutting refers to cutting metal (such as steel plate, carbon steel, alloy steel, steel bar or copper ingot) with heat energy generated by oxygen-acetylene (or other combustible gases, such as propane and natural gas) flame. The combustible gases used in gas cutting are mainly acetylene, liquefied petroleum gas and hydrogen. The mixing of combustible gas and oxygen and the injection of cutting oxygen are completed by the cutting torch, which has one more oxygen conduit than the welding torch. Gas cutting is a common method of metal thermal cutting in various industrial departments, especially manual gas cutting is flexible and convenient to use, and it is an indispensable process method for sporadic blanking, waste disintegration, installation and disassembly in factories.