What is this for on Aqualung JM Cousteau Royal SL 2nd stage?
- Thread starter Vq-1
- Start date
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Probably either a Venturi Lever or a "cracking force " adjustment feature instead of the knob now used on most contemporary regs?
WHAT DOES THAT KNOB/LEVER DO?
axxel57
Contributor
It's probably the cover for the side exhalation valve, which you can switch on or off.......
OP
Vq-1
Contributor
Thanks for reply
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