Respiratory protective devices. Lung governed demand self-contained open-circuit compressed air breathing apparatus with full face mask or mouthpiece assembly for escape. Requirements, testing, marking— 34 стр.
Respiratory protective devices. Compressed air line breathing apparatus with demand valve. Apparatus with a full mask. Requirements, testing, marking— 38 стр.
Respiratory protective devices. Compressed air line breathing devices with demand valve. Devices with a full face mask. Requirements, testing and marking— 34 стр.
Specification for respiratory protective devices for escape. Self- contained open-circuit compressed air breathing apparatus withfull face mask or mouthpiece assembly— 22 стр.