Why are there two pressure gauges on the gas-cut acetylene bottle? Which one? How much is it? Thank you for giving me oxygen!

One is a high pressure gauge, indicating the pressure in the bottle, and the other is a low pressure gauge, indicating the working pressure. Generally, the working pressure is between 0.05 and 0.1,which is enough. According to the thickness of the cutting plate. The use of oxygen meter is the same. You can refer to the gas welder technology.

Acetylene meter with two pressure gauges; One is a high-pressure meter, which can measure the pressure in the bottle, that is, the amount of acetylene in the bottle. The other table is the low pressure meter, which can be adjusted, that is, the pressure required for gas cutting. As for the pressure, it is related to the thickness of the iron plate.

Usually, the valve of the bottle is opened twice, and then the pressure reducing valve and low pressure gauge are adjusted to about 0.03, which is enough to cut the steel plate of about 1 cm.

Extended data:

The main body of the gas cutting pressure reducer is made of brass.

In the two-stage decompression system, when the pressure-regulating screw is screwed, the pressure-regulating spring, elastic membrane and ejector rod of the valve are used to open and close the pressure-reducing valve to varying degrees, so as to adjust the decompression degree of oxygen sent by the first decompression system or stop gas supply.

References:

Baidu encyclopedia-acetylene decompressor