| 摘要 |
The invention relates to a gas distribution assembly comprising a gas container (20), such as a gas cylinder, a valve unit fixed to the gas container (20) and a protective cap (1, 2, 3, 4) arranged around the said valve unit, the protective cap (1, 2, 3, 4) comprising an opening (9) in which a rotary control member (5) is housed. The opening (9) is bordered by a protruding brim (7) jutting out from the external surface of the body (2) of the protective cap (1, 2, 3, 4). The protruding brim (7) comprises a cutout (8) forming a reading window so that marks or markings (11) corresponding to gas flow-rate values can be read. |
