a needle valve on O2 house

Marc T · 13th September 2006, 16:52

I use that as backup system for my Rebreather, and that perh)aps could be helpfull for somehone.
The idea is to fit a "in line" needle valve on your o2 hose just before the manual addition valve (a very simple mod on OTS counterlungs Rebreather )to avoid o2 spike when flying manually your RB especially a depth.

decoweenie · 13th September 2006, 19:13

More details please, and pics if possible...

aknelson · 14th September 2006, 04:30

Hope this helps

ATH

rogeringebo · 14th September 2006, 05:54

Here is the Pelagian solution
http://www.dykarna.se/photos/origina...0604005225.jpg

/Rodge

decoweenie · 14th September 2006, 06:03

Quote: (Originally Posted by rogeringebo)

Here is the Pelagian solution

I think it is beautiful and would love one, except it is quite costly relatively IMHO...

steevke · 14th September 2006, 07:15

If it would be available at a reasonable cost (say 300 to 350 EUR or so) I would buy one immediately.

And I think a lot of other people would then buy one as well.

Steven

Marc T · 14th September 2006, 10:45

Quote: (Originally Posted by steevke)

If it would be available at a reasonable cost (say 300 to 350 EUR or so) I would buy one immediately.

And I think a lot of other people would then buy one as well.

Steven

One for me too!!

Marc T · 14th September 2006, 10:55

Quote: (Originally Posted by decoweenie)

More details please, and pics if possible...

Pics will come soon
For the détails, its simple from your CL valve you have the normal hose connector then the needle valve between two 1/4 gas adaptator you can find everywhere.
You just have to sacrify a LP BC hose connector to test that.

During the dive the needle is completely opened but when you need to fly manually at depth you shut the needle valve and have a try, listening to the O2 flow, so you are sure not to have a massive O2 spike.

I think its a great and simple improvement, flying manualy could become less dangerous.

Any thought?

Marc T · 14th September 2006, 13:18

Quote: (Originally Posted by Marc T)

Pics will come soon
For the détails, its simple from your CL valve you have the normal hose connector then the needle valve between two 1/4 gas adaptator you can find everywhere.
You just have to sacrify a LP BC hose connector to test that.

During the dive the needle is completely opened but when you need to fly manually at depth you shut the needle valve and have a try, listening to the O2 flow, so you are sure not to have a massive O2 spike.

I think its a great and simple improvement, flying manualy could become less dangerous.

Any thought?

Oh! Just forgot to say that the maximal allowed flow rate through the needle valve must be way bigger than the flow used in KISS like system, dont forget that you have no bypass on this system, its just a way to temporary decrease the flow if you need.

For my own I use a small valve from LEGRIS

http://[URL="http://www.legris.com"]www.legris.com[/url]

Rebreatherlab · 15th September 2006, 18:20

Quote: (Originally Posted by steevke)

If it would be available at a reasonable cost (say 300 to 350 EUR or so) I would buy one immediately.

And I think a lot of other people would then buy one as well.

Steven

Hi Steven,

The price for the Pelagain O2 feed block with hoses is 478 USD, so not too far from 350 euro!

Andy

13th September 2006, 16:52	#1 (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: 470	a needle valve on O2 house I use that as backup system for my Rebreather, and that perh)aps could be helpfull for somehone. The idea is to fit a "in line" needle valve on your o2 hose just before the manual addition valve (a very simple mod on OTS counterlungs Rebreather )to avoid o2 spike when flying manually your RB especially a depth.
(Online)

13th September 2006, 19:13	#2 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Re: a needle valve on O2 house More details please, and pics if possible... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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14th September 2006, 05:54	#4 (permalink)
rogeringebo Done with bubbles Current Rebreather/s: Pelagian Other Rebreather/s: Megalodon Classic Kiss Pelagian Join Date: Sep 2005 Location: Stockholm Sweden Posts: 697	Re: a needle valve on O2 house Here is the Pelagian solution http://www.dykarna.se/photos/origina...0604005225.jpg /Rodge
(Online)

14th September 2006, 06:03	#5 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Re: a needle valve on O2 house Quote: (Originally Posted by rogeringebo) Here is the Pelagian solution I think it is beautiful and would love one, except it is quite costly relatively IMHO... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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14th September 2006, 07:15	#6 (permalink)
steevke Custom Title Allowed! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Sport Kiss Join Date: Jul 2005 Location: Belgium Posts: 310	Re: a needle valve on O2 house If it would be available at a reasonable cost (say 300 to 350 EUR or so) I would buy one immediately. And I think a lot of other people would then buy one as well. Steven
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14th September 2006, 10:45	#7 (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: 470	Re: a needle valve on O2 house Quote: (Originally Posted by steevke) If it would be available at a reasonable cost (say 300 to 350 EUR or so) I would buy one immediately. And I think a lot of other people would then buy one as well. Steven One for me too!!
(Online)

14th September 2006, 10:55	#8 (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: 470	Re: a needle valve on O2 house Quote: (Originally Posted by decoweenie) More details please, and pics if possible... Pics will come soon For the détails, its simple from your CL valve you have the normal hose connector then the needle valve between two 1/4 gas adaptator you can find everywhere. You just have to sacrify a LP BC hose connector to test that. During the dive the needle is completely opened but when you need to fly manually at depth you shut the needle valve and have a try, listening to the O2 flow, so you are sure not to have a massive O2 spike. I think its a great and simple improvement, flying manualy could become less dangerous. Any thought?
(Online)

14th September 2006, 13:18	#9 (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: 470	Re: a needle valve on O2 house Quote: (Originally Posted by Marc T) Pics will come soon For the détails, its simple from your CL valve you have the normal hose connector then the needle valve between two 1/4 gas adaptator you can find everywhere. You just have to sacrify a LP BC hose connector to test that. During the dive the needle is completely opened but when you need to fly manually at depth you shut the needle valve and have a try, listening to the O2 flow, so you are sure not to have a massive O2 spike. I think its a great and simple improvement, flying manualy could become less dangerous. Any thought? Oh! Just forgot to say that the maximal allowed flow rate through the needle valve must be way bigger than the flow used in KISS like system, dont forget that you have no bypass on this system, its just a way to temporary decrease the flow if you need. For my own I use a small valve from LEGRIS http://[URL="http://www.legris.com"]www.legris.com[/url]
(Online)

15th September 2006, 18:20	#10 (permalink)
Rebreatherlab RebreatherWorld Sponsor Current Rebreather/s: Pelagian Other Rebreather/s: Not Bought Yet Classic Kiss Pelagian Join Date: Sep 2005 Location: Thailand Posts: 200	Re: a needle valve on O2 house Quote: (Originally Posted by steevke) If it would be available at a reasonable cost (say 300 to 350 EUR or so) I would buy one immediately. And I think a lot of other people would then buy one as well. Steven Hi Steven, The price for the Pelagain O2 feed block with hoses is 478 USD, so not too far from 350 euro! Andy
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