Adv

seeboth · 18th January 2008, 21:32

Im looking to include an ADV on my homebuilt project, and I wasnt sure how others have dealt with that. Is there a part somewhere or a trick to making your own, or have most of you just used parts off of current models.

It seems like a relatively simple component, Im just not sure of the intricacies. An ADV is just a modified demand valve right? when the breathing loop is a lower pressure than the surrounding water the ADV adds diluent right? Im sure there is more to the valve than I am thinking about.

thanks,
Alex

**Lake_Tahoe_Diver** · 18th January 2008, 23:00

On some units they are simple than others. The Prism the ADV is for most parts a schrader valve in the counter lung. When the lung bottoms out the valve get pressed in and gas flows. Very little chance this type can free flow. Other units use what looks to be a second stage reg, some free flow a little some don't. Decide how complex you want to make it.

mountain diver · 19th January 2008, 00:23

or you could just use a bov as your adv.

all the best.

**SeaBass** · 19th January 2008, 00:52

Probably easiest way to add an ADV is to use a Drager Ray dosage unit.

Although there were origionally built for Semi-closed units with a constant flow valve they also have a demand backup. You can simply close the constant flow orfice (we weld them) and you have a demand only valve.

The other nice thing about them is that they plug into a P-port so they are easy to add to a homebuilt counterlung.

Thom

diverberr · 19th January 2008, 12:13

A friend of mine used an off the shelf second stage for his ADV on his modified Azimuth (KISS) unit. He machined a plug for the exhaust valve and a fitting for the mouthpiece end which plugs into the Azimuth lung. It's been working flawlessly for about three years now since he installed it. I can probably get him to send a few photos if you're interested.

Cheers,
Al.

G4SSG · 19th January 2008, 14:42

Quote: (Originally Posted by seeboth)

Im looking to include an ADV on my homebuilt project, and I wasnt sure how others have dealt with that. Is there a part somewhere or a trick to making your own, or have most of you just used parts off of current models.

It seems like a relatively simple component, Im just not sure of the intricacies. An ADV is just a modified demand valve right? when the breathing loop is a lower pressure than the surrounding water the ADV adds diluent right? Im sure there is more to the valve than I am thinking about.

thanks,
Alex

hi
i used a modified poseidon cylclon 2nd stage...
blanked of the exhaust port ....
fitted a restrictor in the hose ..
and fine tuned to suit
the most difficult part for me to do was joining the
mouthpeice opening to the rest of it ?
martyn..

mathias · 19th January 2008, 14:50

For sale: Dräger Dolphin ADV
The complete dosage unit, three orifices (40,50,60), bypass and elbow, 200euro + transport

**SeaBass** · 19th January 2008, 15:09

Well if money was not an option (and you don't want to fool around with mods) I would just use a Meg ADV.

You can buy the whole kit on Diverite Express.

1 - Counter lung ADV port $49.00
1 - ADV $189.00

If you want a less expensive diaphram alternative (that doesn't free flow) pick up a Ray Dosage unit.

Thom

gerstl_ossi · 19th January 2008, 20:34

Quote: (Originally Posted by seeboth)

Im looking to include an ADV on my homebuilt project, and I wasnt sure how others have dealt with that. Is there a part somewhere or a trick to making your own, or have most of you just used parts off of current models.

It seems like a relatively simple component, I'm just not sure of the intricacies. An ADV is just a modified demand valve right? when the breathing loop is a lower pressure than the surrounding water the ADV adds diluent right? Im sure there is more to the valve than I am thinking about.

thanks,
Alex

Made it myself on a mill-drill and bench-late. It's similar to those of Megalodon. The inner part is a cheap part from coltrisub,

atomik · 20th January 2008, 07:39

Quote: (Originally Posted by gerstl_ossi)

Made it myself on a mill-drill and bench-late. It's similar to those of Megalodon. The inner part is a cheap part from coltrisub,

where did you find the adv?

18th January 2008, 21:32	#1 (permalink)
seeboth New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jan 2008 Location: Wisconsin, United States Posts: 45	Adv Im looking to include an ADV on my homebuilt project, and I wasnt sure how others have dealt with that. Is there a part somewhere or a trick to making your own, or have most of you just used parts off of current models. It seems like a relatively simple component, Im just not sure of the intricacies. An ADV is just a modified demand valve right? when the breathing loop is a lower pressure than the surrounding water the ADV adds diluent right? Im sure there is more to the valve than I am thinking about. thanks, Alex
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18th January 2008, 23:00	#2 (permalink)
Lake_Tahoe_Diver Enjoying the silence Current Rebreather/s: Prism Topaz Sport Kiss Other Rebreather/s: Not Bought Yet Join Date: Feb 2006 Location: Reno, Nv. (Lake Tahoe) Posts: 187	Re: Adv On some units they are simple than others. The Prism the ADV is for most parts a schrader valve in the counter lung. When the lung bottoms out the valve get pressed in and gas flows. Very little chance this type can free flow. Other units use what looks to be a second stage reg, some free flow a little some don't. Decide how complex you want to make it. __________________ Scuba Diving,the only sport where it is good to be in over your head....
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19th January 2008, 00:23	#3 (permalink)
mountain diver Silent Lucidity Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2006 Location: edmonton, ab. Posts: 214	Re: Adv or you could just use a bov as your adv. all the best.
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19th January 2008, 00:52	#4 (permalink)
SeaBass Thom Susko Current Rebreather/s: Megalodon Ray Home Build Other Rebreather/s: Not Bought Yet Ray Home Build Join Date: Jul 2006 Location: San Clemente, CA Posts: 232	Re: Adv Probably easiest way to add an ADV is to use a Drager Ray dosage unit. Although there were origionally built for Semi-closed units with a constant flow valve they also have a demand backup. You can simply close the constant flow orfice (we weld them) and you have a demand only valve. The other nice thing about them is that they plug into a P-port so they are easy to add to a homebuilt counterlung. Thom
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19th January 2008, 12:13	#5 (permalink)
diverberr New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Oct 2005 Location: Eastern Passage, Nova Scotia Posts: 40	Re: Adv A friend of mine used an off the shelf second stage for his ADV on his modified Azimuth (KISS) unit. He machined a plug for the exhaust valve and a fitting for the mouthpiece end which plugs into the Azimuth lung. It's been working flawlessly for about three years now since he installed it. I can probably get him to send a few photos if you're interested. Cheers, Al.
(Offline)

19th January 2008, 14:42	#6 (permalink)
G4SSG New Member Current Rebreather/s: Ouroboros Home Build Other Rebreather/s: Inspiration Classic Megalodon Home Build Join Date: Dec 2005 Location: UK...Midlands Posts: 61	Re: Adv Quote: (Originally Posted by seeboth) Im looking to include an ADV on my homebuilt project, and I wasnt sure how others have dealt with that. Is there a part somewhere or a trick to making your own, or have most of you just used parts off of current models. It seems like a relatively simple component, Im just not sure of the intricacies. An ADV is just a modified demand valve right? when the breathing loop is a lower pressure than the surrounding water the ADV adds diluent right? Im sure there is more to the valve than I am thinking about. thanks, Alex hi i used a modified poseidon cylclon 2nd stage... blanked of the exhaust port .... fitted a restrictor in the hose .. and fine tuned to suit the most difficult part for me to do was joining the mouthpeice opening to the rest of it ? martyn..
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19th January 2008, 14:50	#7 (permalink)
mathias Ouroboros #31 Current Rebreather/s: Ouroboros Other Rebreather/s: Not Bought Yet Inspiration Classic MK 15.X Join Date: Sep 2006 Location: Switzerland - Murten Posts: 184	Re: Adv For sale: Dräger Dolphin ADV The complete dosage unit, three orifices (40,50,60), bypass and elbow, 200euro + transport __________________ Our dreams are other people's nightmares ;-) Plus près du fond, plus loin des cons !
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19th January 2008, 15:09	#8 (permalink)
SeaBass Thom Susko Current Rebreather/s: Megalodon Ray Home Build Other Rebreather/s: Not Bought Yet Ray Home Build Join Date: Jul 2006 Location: San Clemente, CA Posts: 232	Re: Adv Well if money was not an option (and you don't want to fool around with mods) I would just use a Meg ADV. You can buy the whole kit on Diverite Express. 1 - Counter lung ADV port $49.00 1 - ADV $189.00 If you want a less expensive diaphram alternative (that doesn't free flow) pick up a Ray Dosage unit. Thom
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20th January 2008, 07:39	#10 (permalink)
atomik New Member Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Aug 2006 Location: ITALY Posts: 24	Re: Adv Quote: (Originally Posted by gerstl_ossi) Made it myself on a mill-drill and bench-late. It's similar to those of Megalodon. The inner part is a cheap part from coltrisub, where did you find the adv?
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