Valves Up or Down?

PCDiver · 27th June 2006, 20:41

Quote: (Originally Posted by rogeringebo)

Reaching valves is no problem...
/Rodge

Very easy. Try to do that with a dry-suit, two stage bottles and a 10.000$ camera in your hands ... I keep my valves down. I did try the other way.

Valves inversed works if the rebreather functions normally. But if your solenoid stucks ... I would like to see you control the O2 via the valve during a 60+ minute deco. Big PITA.

rogeringebo · 27th June 2006, 21:12

How did you reach your valves when on OC in drysuit? Why not clip camera to d-ring in case of problem?
I would disconnect solenoid-feed and dive manually...if problem with manual O2 feed,disconnect that and plug in offboard O2 to left CL and feed from there if that problem would come up...or you could always bailout...
Well we all have different ideas how we want our gear...
What works for you/me works

/Rodge

PCDiver · 27th June 2006, 22:14

Quote: (Originally Posted by rogeringebo)

How did you reach your valves when on OC in drysuit? Why not clip camera to d-ring in case of problem?
I would disconnect solenoid-feed and dive manually...if problem with manual O2 feed,disconnect that and plug in offboard O2 to left CL and feed from there if that problem would come up...or you could always bailout...
Well we all have different ideas how we want our gear...
What works for you/me works

/Rodge

I can reach my valves on OC, but in a real OC dive you only need to do this once, not multiple times (O2 - solenoid stuck open). I don't think bailing out just because of an solenoid problem is a smart thing to do. Better to stay on the loop.

It all depends on the rebreather you are using. On an unmodified Inspiration it is not possible to disconnect the solenoid without loosing the electronics.

Each to its own, like you said. I'd rather keep it simple

. Never thought I was ever going to say that.

**nigelh** · 27th June 2006, 22:23

Quote: (Originally Posted by rogeringebo)

How did you reach your valves when on OC in drysuit?

I couldn't so I inverted the cylinders. Even people who can reach valves behind their head have commented how easy and fast it made a shutdown when they tried them.
Valves at the top were a daft idea that was needed for the twinhose reg where the valve needed to be level with the mouthpiece. Only amateurs still use them.

Janos · 27th June 2006, 22:43

Quote: (Originally Posted by nigelh)

I couldn't so I inverted the cylinders. Even people who can reach valves behind their head have commented how easy and fast it made a shutdown when they tried them.
Valves at the top were a daft idea that was needed for the twinhose reg where the valve needed to be level with the mouthpiece. Only amateurs still use them.

Exunctly. Valves down is just better. There's a reason why Navy divers and firemen have them that way.

Janos

mikedive · 28th June 2006, 01:57

I use my unit mainly to cave and for trimix dive in Mexico with water temp. on the cenotes at 77 F and on the ocean between 80 F to 84 F what means wetsuit almost all the time and on this case (wetsuit) I like the tanks upright on my Meg and on my Inspiration/Travelframe.
I just use valves down if I need dive with drysuit wearing a extreme undergarment and on this case doesn't matter because with drysuit is easy to offset the valves weight and you can have the valves upside down.
With the valves upside down wearing jetfins and wetsuit your legs get to heavy and to keep the trim (horizontal position) will make you tire on long cave dives in special if you are swimming in a cave with many jumps/gaps like down here will get worse.
When you stop to do a jump/gap your legs will come down (creating a silt situation, if is a small cave or if the line is close to the ground) or you need keep kicking backward/forward to keep your legs up what will make you tire much faster.
That is way I mount my tanks up right!!!!
Cheers,

rogeringebo · 28th June 2006, 06:40

For me that is the main reason for liking valves up....especially when in wetsuit...I hate placing counterweights to get the balance right..
When in drysuit one needs more weight anyway and can help "buttheavyness" by having a little more air in the legs,,
/Rodge

Marc T · 28th June 2006, 07:30

I see several great advantges for valves up

Wathether the size of the bottle you use, the tream is the same and the upper side of your Rebreather is also the same, so there is no real danger for upper part of the rig wich is just behind your neck or head and very easily controlled, on the contrary down valves make the upper size of the rig far higher if the bottle's size increase ( bing bang bong

).

Vales up protect the lower part of the rig when you fall on your but between sump or before dive, the tanks tuch the ground first or at least greatly protect your Rebreather.

Greatly easyest to wear your rig in muddy and rocky situation

rogeringebo · 28th June 2006, 07:47

Just a funny pic of me with WRONG size tank and valves down
/Rodge

PCDiver · 28th June 2006, 08:41

Quote: (Originally Posted by rogeringebo)

Just a funny pic of me with WRONG size tank and valves down
/Rodge

nice pic

27th June 2006, 20:41	#11 (permalink)
PCDiver Submerge Productions Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belgium Posts: 1,003	Re: Valves Up or Down? Quote: (Originally Posted by rogeringebo) Reaching valves is no problem... /Rodge Very easy. Try to do that with a dry-suit, two stage bottles and a 10.000$ camera in your hands ... I keep my valves down. I did try the other way. Valves inversed works if the rebreather functions normally. But if your solenoid stucks ... I would like to see you control the O2 via the valve during a 60+ minute deco. Big PITA.
(Online)

27th June 2006, 21:12	#12 (permalink)
rogeringebo Life starts at 100 Current Rebreather/s: Pelagian Other Rebreather/s: Megalodon Classic Kiss Pelagian Join Date: Sep 2005 Location: Stockholm Sweden Posts: 739	Re: Valves Up or Down? How did you reach your valves when on OC in drysuit? Why not clip camera to d-ring in case of problem? I would disconnect solenoid-feed and dive manually...if problem with manual O2 feed,disconnect that and plug in offboard O2 to left CL and feed from there if that problem would come up...or you could always bailout... Well we all have different ideas how we want our gear... What works for you/me works /Rodge __________________ Life starts at 100 Last edited by rogeringebo : 27th June 2006 at 21:17. Reason: typo
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27th June 2006, 22:14	#13 (permalink)
PCDiver Submerge Productions Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belgium Posts: 1,003	Re: Valves Up or Down? Quote: (Originally Posted by rogeringebo) How did you reach your valves when on OC in drysuit? Why not clip camera to d-ring in case of problem? I would disconnect solenoid-feed and dive manually...if problem with manual O2 feed,disconnect that and plug in offboard O2 to left CL and feed from there if that problem would come up...or you could always bailout... Well we all have different ideas how we want our gear... What works for you/me works /Rodge I can reach my valves on OC, but in a real OC dive you only need to do this once, not multiple times (O2 - solenoid stuck open). I don't think bailing out just because of an solenoid problem is a smart thing to do. Better to stay on the loop. It all depends on the rebreather you are using. On an unmodified Inspiration it is not possible to disconnect the solenoid without loosing the electronics. Each to its own, like you said. I'd rather keep it simple . Never thought I was ever going to say that.
(Online)

27th June 2006, 22:23	#14 (permalink)
nigelh New member Current Rebreather/s: Inspiration Vision Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Mar 2005 Location: Brighton, Sussex, UK Posts: 883	Re: Valves Up or Down? Quote: (Originally Posted by rogeringebo) How did you reach your valves when on OC in drysuit? I couldn't so I inverted the cylinders. Even people who can reach valves behind their head have commented how easy and fast it made a shutdown when they tried them. Valves at the top were a daft idea that was needed for the twinhose reg where the valve needed to be level with the mouthpiece. Only amateurs still use them. __________________ nigelh
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27th June 2006, 22:43	#15 (permalink)
Janos "Two Sheds" Current Rebreather/s: Classic Kiss Other Rebreather/s: Classic Kiss Join Date: Feb 2005 Location: East Surrey Posts: 632	Re: Valves Up or Down? Quote: (Originally Posted by nigelh) I couldn't so I inverted the cylinders. Even people who can reach valves behind their head have commented how easy and fast it made a shutdown when they tried them. Valves at the top were a daft idea that was needed for the twinhose reg where the valve needed to be level with the mouthpiece. Only amateurs still use them. Exunctly. Valves down is just better. There's a reason why Navy divers and firemen have them that way. Janos __________________ You can lead a horse to water but you can't climb a ladder with a large bell in both hands - Vic Reeves www.hellfins.com/shed
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28th June 2006, 01:57	#16 (permalink)
mikedive Custom Title Allowed! Current Rebreather/s: Megalodon Other CCR Other Rebreather/s: Inspiration Classic Optima Other CCR Join Date: Apr 2005 Location: South Brazil, Texas and Mexico Posts: 330	Re: Valves Up or Down? I use my unit mainly to cave and for trimix dive in Mexico with water temp. on the cenotes at 77 F and on the ocean between 80 F to 84 F what means wetsuit almost all the time and on this case (wetsuit) I like the tanks upright on my Meg and on my Inspiration/Travelframe. I just use valves down if I need dive with drysuit wearing a extreme undergarment and on this case doesn't matter because with drysuit is easy to offset the valves weight and you can have the valves upside down. With the valves upside down wearing jetfins and wetsuit your legs get to heavy and to keep the trim (horizontal position) will make you tire on long cave dives in special if you are swimming in a cave with many jumps/gaps like down here will get worse. When you stop to do a jump/gap your legs will come down (creating a silt situation, if is a small cave or if the line is close to the ground) or you need keep kicking backward/forward to keep your legs up what will make you tire much faster. That is way I mount my tanks up right!!!! Cheers, __________________ Michael Netto - www.rebreatherclubedobrasil.com.br ISC Megalodon CCR instructor and dealer IANTD CCR Trimix and CCR Cave instructor IANTD Dive Rite O2ptima instructor
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28th June 2006, 06:40	#17 (permalink)
rogeringebo Life starts at 100 Current Rebreather/s: Pelagian Other Rebreather/s: Megalodon Classic Kiss Pelagian Join Date: Sep 2005 Location: Stockholm Sweden Posts: 739	Re: Valves Up or Down? For me that is the main reason for liking valves up....especially when in wetsuit...I hate placing counterweights to get the balance right.. When in drysuit one needs more weight anyway and can help "buttheavyness" by having a little more air in the legs,, /Rodge __________________ Life starts at 100
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28th June 2006, 07:30	#18 (permalink)
Marc T hell is in the details Current Rebreather/s: RB80 / Clone Home Build Other Rebreather/s: Not Bought Yet RB80 / Clone Home Build Join Date: Sep 2005 Location: FRANCE Carcassonne Posts: 498	Re: Valves Up or Down? I see several great advantges for valves up Wathether the size of the bottle you use, the tream is the same and the upper side of your Rebreather is also the same, so there is no real danger for upper part of the rig wich is just behind your neck or head and very easily controlled, on the contrary down valves make the upper size of the rig far higher if the bottle's size increase ( bing bang bong ). Vales up protect the lower part of the rig when you fall on your but between sump or before dive, the tanks tuch the ground first or at least greatly protect your Rebreather. Greatly easyest to wear your rig in muddy and rocky situation
(Online)

28th June 2006, 08:41	#20 (permalink)
PCDiver Submerge Productions Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belgium Posts: 1,003	Re: Valves Up or Down? Quote: (Originally Posted by rogeringebo) Just a funny pic of me with WRONG size tank and valves down /Rodge nice pic
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