CO2 buildup

[treasureman]

If you have a sticky exhaust valve will the end result be a higher concentraion of C02 in the mouthpiece area. Will this be a cummulative thing that would result in light headedness.

[Firebrand]

Seems unikey to me, you use a reativey small ammount of o2 with a normal inhale exhale cyce as the avioli (sp?) swap out gasses very quickly, and leave a good deal of o2 in the mix to exhale. The physical size of the mouthpiece is pretty small, so an actual build up of a co2 concentration is pretty minimal. An average breath of gas holds about 21% o2, and the body needs at least 18% to sustain itself. I cant imagine a dif of more than 3% in a gas exchange being held in a mouthpiece. Is it possible that there is a breathing resistance causing t by not being able to draw a complete breath?

[Nemrod]

The short answer is no, that will not happen.

Nemrod

[SeaHuntJerry]

Yep Nemrod your right.
What about the first double hose with no non return valves.
Most co2 buildup is from a diver not breathing properly hypoventilating
when panicky.
Sea you nemrod at Wayzee

[Firebrand]

Sorry.....I should have kept it to the point.

No.

[Nemrod]

Firebrand, I only gave my unusually short answer because I had to walk the doggie.

Yep, plan to be at Wazee but my wife may not come after all due to concerns over said dog. My regulators are stacked across the back of the couch ready to go.

Nemrod

[Firebrand]

I hope someday to go to one of the vintage dives. They sound like a lot of fun, and I could learn a great deal from my betters. I'm too buisy right now to go, I guess it's a blessing, but sometimes it kind of sucks being self employed. You have to make hay while the sun is shining..........i guess....

[treasureman]

couldit be then the extra effort required for exhalation with a sticky valve. I havent had time to put it on the magnehalic and ,easure exhalation rate, but Bryan worked these over but good. one breaks at .75, and the other at 1.0 on the magnehalic during inhale.

All told though they breathe at least 30% better or more than my best RAM.

[Firebrand]

I supphose it's possible. If you can't fully expell your normal lung capacity because of that much resistance. It would seem that you would really notice that much effort eather in or out though. Are you certain the valves are stuck bown to the wagon wheel, or the duck bill is stuck togeather? Does it happen with other regs???

[swimjim]

Sticky duckbills do happen. a little talc will fix that. My healthways mouth piece valves, although they were in good shape were sticky when I first had the reg. I took it apart and washed the mouthpiece and the wagon wheels removed from it in warm water with Dawn dishwashing liquid. Whatever gunk was causing the stickage was elliminated. No more problems.

Jim

[1969ivan1]

I don't really know if it works/helps but, when I install a duck in my regs I also run a thin line of silicone just inside the slits with a small screwdriver or similar item. That seems to keep them from gluing together.

[Firebrand]

Does the silicone have any ill effects to it??

[1969ivan1]

I sure hope not !

[JES]

I sure hope not !

I'm sure the uncontrollable twitching is completely unrelated...

[Firebrand]

I sure hope not !

I'm sure the uncontrollable twitching is completely unrelated...

I meant to the duck bill!