This European Standard is applicable to self-contained compressed air breathing apparatus designed as positive pressure breathing apparatus. This European Standard specifies a thread connection, M 45 x 3, which may optionally be used for facepieces for positive pressure breathing apparatus. This European Standard does not apply to negative pressure breathing apparatus, to closed-circuit breathing apparatus or to diving equipment.
Regulation (EU) 2016/425 of the European Parliament and of the Council of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC
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