15
1 – visor, 2 – sealer, 3 – upper housing, 4 – valve unit, 5 – undermask, 6 – filter
bayonet type coupling, 7 – head harness, 8 – button, 9 – lower housing, 10 – double
obturator, 11 – frontal eyelet, 12 – temporal eyelet, 13 – cheek eyelet, 14 – screw,
15 – washer, 16 – nut, 17 – O-ring, 18 – nut, 19 – exhalation valve leaf, 20 – exhalation
valve seat with a membrane, 21 – O-ring, 22 – meshed nut, 23 – plug, 24 – O-ring,
25 – cover plate, 26 – inhalation valve seat, 27 – inhalation valve leaf, 28 – seat of the
inhalation valve with a bayonet, 29 – inhalation valve leaf, 30 – nut, 31 – O-ring, 32 – rubber
ring, 33 – parietal part of the head harness, 34 – temporal strap of the head harness,
35 – cheek strap of the head harness, 36 – frontal strap of the head harness, 37 – buckle.
Figure 1 – UNIX 5100 Full Face Mask
