MSA AUER 3S-PF Mode D'emploi page 21

lens ring,
assembly
connector cover
screw
inhalation valve disc
inhalation valve seat
exhalation valve disc
valve cap
Fig. 1
lens
positioning pin
valve spring
valve cover
speaking diaphragm
buckle assembly
for head harness
buckle assembly
and D-ring
threaded socket
slide ring
valve socket
valve seat
valve disc
nose cup
retainer ring
head harness
Fig. 2
21