Nominal volume of gas cylinder

The nominal volume of a gas cylinder refers to the grading series of the cylinder volume specified by the gas cylinder regulations and standards. The nominal volume and the nominal working pressure are the same as a nominal value, not an accurate actual value. For safety purposes, the actual volume of the cylinder must be greater than the nominal volume, with a tolerance of +5%. It can be seen that although the nominal volume is the nominal value of an appellation, it is strictly limited and cannot be called casually. For example, for a seamless gas cylinder with a nominal volume of 40L, its actual volume should be between 40L and 42L.

In order to facilitate management, my country divides the nominal volume of gas cylinders into three categories: large, medium, and small: 12L (including 12L) or less is small volume, 12L or more to 100L (including 100L) is medium volume, and 100L or more is large volume.

For the volume of seamless steel gas cylinders, 40L gas cylinders are the most common, but some are as small as 0.4L to 80L.

For the volume of steel welded gas cylinders, 40L steel cylinders are the most common as dissolved acetylene cylinders, and 800L and 400L liquid ammonia and liquid chlorine cylinders are the most popular. Because calculated according to the filling factor of 1.25 kg/L of liquid chlorine, their medium masses are exactly 1 t and 0.5 t.

The volume of the liquefied petroleum gas cylinder is the most with 35.5L. Because it is calculated with a filling factor of 0.42 kg/L, this type of gas cylinder is filled with 15kg of liquefied petroleum gas, which is the consumption of an average family in one month.