It’s not strictly an open vs closed thing, the knob adds spring pressure as you screw it in, clockwise when looking at the knob.
Atomic Z2 reg is free flowing with new Seacure mouthpiece.
- Thread starter okiediver1961
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and anyway whats the fascination with this huge hard plastic chewed on looking thing yuck
You shouldn't hold the reg with you teeth anyway too much strain leads to fatigue
Grab a comfobite and learn how to use it
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