Pure oxygen is stored in the gas cylinder under high pressure. With a bottle volume of 40 litres and a filling pressure of 150 bar, the content is 150 x 40 l = 6,000 litres of oxygen. Correspondingly an oxygen bottle of 50 l capacity and 200 bar filling pressure contains10,000 l of oxygen.
Keep the bottle valve of oxygen bottles free of oil and grease because of the danger of explosion.
Acetylene may not be placed under high pressure. When filled in steel cylinders, the acetylene is dissolved in acetone. In the acetylene bottle there is a porous material; the pores are filled with acetone. The acetylene is dissolved in this acetone. With a filling pressure of 18 bar an acetylene bottle contains approximately 6,000 l of acetylene. If gas is removed (pressure drop) the acetylene is released again. The acetylene bottle has a clamp lock and consequently cannot be inadvertently connected to another bottle (for example oxygen). Do not use an acetylene bottle lying on its side, or acetone may be able to flow out. Never take out more than 1,000 litres in an hour; if necessary, couple several bottles together.
Hose couplings for gas hoses must be equipped with a self-acting gas lock and be secured against unintentional loosening. Hose couplings of a specific gas type may not be coupled with hose couplings of another gas type.
The pressure reducer is connected to the bottle valve. It reduces the high pressure in the bottle to the respective working pressure. The contents pressure gauge shows the bottle pressure; the working pressure gauge shows the working pressure which is set by the adjusting screw.
Pressure reducer must be designed in such a way that they can withstand the expected loads and workers (users) will not be exposed to danger. In addition, they need to be clearly and permanently marked with the letter code for the type of gas.