Respiratory protective devices - Self-contained open-circuit compressed air breathing apparatus with half mask designed to include a positive pressure lung governed demand valve for escape purposes only
呼吸防护装置——带半面罩的自给式开路压缩空气呼吸器 其设计包括一个正压呼吸阀 仅用于逃生目的;德文版EN 14529:2005