Cressi XP Octo - Flow Deviator

[segundo3000gt]

Can someone confirm what the setting on the top of my second stage does? From the description:

"The upper part of the body has a flow deviator that acts on the Venturi effect, with dive/pre-dive function."

Regulators & Octopus Regulators & Octopus-Octopus XS

It seems like it has to do with the sensitivity of the regulator - how it breathes vs. maybe being more likely to freeflow?

 

[tbone1004]

basically acts as a dive/predive switch. Leave it on the - setting when not using it, and if you start breathing on it at depth, turn it all the way to + and it will increase the venturi effect in the second stage which lowers the work of breathing

 

[BoltSnap]

"Theoretically," On the + setting, the venturi effect kicks in and it will be easier to continue inhaling with it but it will be easier to get it free flowing if the mouthpiece isn't in your mouth (it should only be on the + setting when the mouthpiece is in your mouth). On the - setting, it doesn't have the veturi effect so it isn't as easy to keep the valve open and thus it is less prone to free flow (use it when the mouthpiece isn't in your mouth).

From extensive experience with Cressi regulators in our dive school's regulator fleet, Cressi regulators are crap and very fragile to say the least. I will never buy a Cressi regulator again.