Respiratory protective devices. Self-contained open-circuit compressed air breathing apparatus with half mask designed to be used with positive pressure only. Requirements, testing, marking— 30 стр.
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. Self-contained open-circuit compressed air breathing apparatus with full face mask. Requirements, testing, marking— 44 стр.