Valves....how much open ?

Pierre Farrugia · 18th April 2005, 17:32

Hello all,

While diving your YBOD how much do you open your valves ? On mine I open O2 side 2 turns and Dil fully open. What do you do? Does going deep makes any difference having the O2 not fully open?

***Decodiver*** · 18th April 2005, 17:42

Quote: (Originally Posted by Pierre Farrugia)

Hello all,

While diving your YBOD how much do you open your valves ? On mine I open O2 side 2 turns and Dil fully open. What do you do? Does going deep makes any difference having the O2 not fully open?

Pierre,

I have both the Dil and O2 open one-and-a-half turns.

No problem even at 125 metres.

Cheers,

Dave Cooper.

Pierre Farrugia · 18th April 2005, 17:58

This is considering that you do not use the diluent reg, if I am not mistaken you do not use a dil reg.

regards

Pierre

Quote: (Originally Posted by Decodiver)

Pierre,

I have both the Dil and O2 open one-and-a-half turns.

No problem even at 125 metres.

Cheers,

Dave Cooper.

***schford*** · 18th April 2005, 18:35

don't know if it helps but on the Meg its one and half to two turns (depending on how accurate I am!) no reg on mine either...

Stuart

***Decodiver*** · 18th April 2005, 20:24

Quote: (Originally Posted by Pierre Farrugia)

This is considering that you do not use the diluent reg, if I am not mistaken you do not use a dil reg.

regards

Pierre

Hi Pierre,

No regs on my CCR.

My Rebreather does just that, it rebreathes.

Cheers,

Dave Cooper.

Robert Cook · 19th April 2005, 01:57

About a turn or so, sometimes not even that much, particularly if I'm shallow. I don't have any regs on my onboard gas, however,

Thanks,
Robert

buggeriamold · 19th April 2005, 03:38

Just to show my Rebreather newbie status, why not full open?

ROB DAVIE · 19th April 2005, 04:30

Quote: (Originally Posted by buggeriamold)

Just to show my Rebreather newbie status, why not full open?

On the oxygen side, if your solenoid sticks in the full open position, it is a much faster shut-down if you only have to go a turn and a half, or two turns, for example.

As for the dil side, your consideration is not one of over-oxygenation, but simply the fact that in-board Rebreather bottles are generally very small, and the faster you can shut one down with a leak, the better off you are.

Just my PPO2's worth.

Rob

JonnyB · 19th April 2005, 06:44

It would be nice to hear from anyone who uses KISS... how much do you open?

/JOnny

***jradomski*** · 19th April 2005, 07:21

Quote: (Originally Posted by ROB DAVIE)

On the oxygen side, if your solenoid sticks in the full open position, it is a much faster shut-down if you only have to go a turn and a half, or two turns, for example.

As for the dil side, your consideration is not one of over-oxygenation, but simply the fact that in-board Rebreather bottles are generally very small, and the faster you can shut one down with a leak, the better off you are.

Just my PPO2's worth.

Rob

The oxygen valves need VERY LITTLE flow through them and the gas thats inside the reg and hoses is more than enough to supply whatever flow is neeeded.. Just shut your valves down and prove it to yourself.. as long as there is reasonable pressure to start with you have a few minutes of oxygen without any flow from the tanks..

I only open my oxygen valve about 1/2 turn and my dilunet about the same... even if I go to the oc reg I can get enough gas from the reg to allow me to turn the valves on.. I also know that if my diluent button gets stuck, I wount have runaway gas addition.. the flow drops off quickly (I have had my dil valve stick once - it was on my neoprene lungs that I got from ISC, which is basically I drysuit valve, and it was no problem at all)

I have had my HP seat on my diluent go... I didn;t lose that much gas because the valve wasnt that open sdo flow was limited and I was able to quickly shut it down..

If it was on my oxygen side I could expect the same outcome..

18th April 2005, 17:32	#1 (permalink)
Pierre Farrugia Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: Malta Posts: 636	Valves....how much open ? Hello all, While diving your YBOD how much do you open your valves ? On mine I open O2 side 2 turns and Dil fully open. What do you do? Does going deep makes any difference having the O2 not fully open? __________________ Pierre Farrugia My wife told me " If you don't quit diving I'm going to leave you" My reply " God, I'll miss you" www.atlam.org www.divemed.com
(Offline)

18th April 2005, 17:42	#2 (permalink)
*Decodiver* Administrator Current Rebreather/s: Megalodon Ouroboros rEvo Other CCR Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss rEvo Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,179	Quote: (Originally Posted by Pierre Farrugia) Hello all, While diving your YBOD how much do you open your valves ? On mine I open O2 side 2 turns and Dil fully open. What do you do? Does going deep makes any difference having the O2 not fully open? Pierre, I have both the Dil and O2 open one-and-a-half turns. No problem even at 125 metres. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
(Offline)

18th April 2005, 17:58	#3 (permalink)
Pierre Farrugia Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: Malta Posts: 636	This is considering that you do not use the diluent reg, if I am not mistaken you do not use a dil reg. regards Pierre Quote: (Originally Posted by Decodiver) Pierre, I have both the Dil and O2 open one-and-a-half turns. No problem even at 125 metres. Cheers, Dave Cooper. __________________ Pierre Farrugia My wife told me " If you don't quit diving I'm going to leave you" My reply " God, I'll miss you" www.atlam.org www.divemed.com
(Offline)

18th April 2005, 18:35	#4 (permalink)
*schford* Despotic Overlord Current Rebreather/s: Megalodon Sport Kiss Other Rebreather/s: Join Date: Jan 2005 Location: London, UK Posts: 3,674	don't know if it helps but on the Meg its one and half to two turns (depending on how accurate I am!) no reg on mine either... Stuart
(Offline)

18th April 2005, 20:24	#5 (permalink)
*Decodiver* Administrator Current Rebreather/s: Megalodon Ouroboros rEvo Other CCR Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss rEvo Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,179	Quote: (Originally Posted by Pierre Farrugia) This is considering that you do not use the diluent reg, if I am not mistaken you do not use a dil reg. regards Pierre Hi Pierre, No regs on my CCR. My Rebreather does just that, it rebreathes. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
(Offline)

19th April 2005, 01:57	#6 (permalink)
Robert Cook Custom Title Allowed! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Apr 2005 Location: Edinburgh Posts: 107	About a turn or so, sometimes not even that much, particularly if I'm shallow. I don't have any regs on my onboard gas, however, Thanks, Robert
(Offline)

19th April 2005, 03:38	#7 (permalink)
buggeriamold Custom Title Allowed! Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Feb 2005 Location: australia Posts: 100	Just to show my Rebreather newbie status, why not full open?
(Offline)

19th April 2005, 04:30	#8 (permalink)
ROB DAVIE Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: HOUSTON, REPUBLIC OF TEJAS Posts: 1,120	Valves.... Quote: (Originally Posted by buggeriamold) Just to show my Rebreather newbie status, why not full open? On the oxygen side, if your solenoid sticks in the full open position, it is a much faster shut-down if you only have to go a turn and a half, or two turns, for example. As for the dil side, your consideration is not one of over-oxygenation, but simply the fact that in-board Rebreather bottles are generally very small, and the faster you can shut one down with a leak, the better off you are. Just my PPO2's worth. Rob __________________ [SIZE=2]"CC Rebreathers will become a viable part of tech diving [U]WHEN PIGS FLY[/U]!!"--GI3[/SIZE]
(Offline)

19th April 2005, 06:44	#9 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 962	It would be nice to hear from anyone who uses KISS... how much do you open? /JOnny
(Offline)

19th April 2005, 07:21	#10 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,899	Quote: (Originally Posted by ROB DAVIE) On the oxygen side, if your solenoid sticks in the full open position, it is a much faster shut-down if you only have to go a turn and a half, or two turns, for example. As for the dil side, your consideration is not one of over-oxygenation, but simply the fact that in-board Rebreather bottles are generally very small, and the faster you can shut one down with a leak, the better off you are. Just my PPO2's worth. Rob The oxygen valves need VERY LITTLE flow through them and the gas thats inside the reg and hoses is more than enough to supply whatever flow is neeeded.. Just shut your valves down and prove it to yourself.. as long as there is reasonable pressure to start with you have a few minutes of oxygen without any flow from the tanks.. I only open my oxygen valve about 1/2 turn and my dilunet about the same... even if I go to the oc reg I can get enough gas from the reg to allow me to turn the valves on.. I also know that if my diluent button gets stuck, I wount have runaway gas addition.. the flow drops off quickly (I have had my dil valve stick once - it was on my neoprene lungs that I got from ISC, which is basically I drysuit valve, and it was no problem at all) I have had my HP seat on my diluent go... I didn;t lose that much gas because the valve wasnt that open sdo flow was limited and I was able to quickly shut it down.. If it was on my oxygen side I could expect the same outcome..
(Online)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode