I have a drager ray and was wondering if it is possible to convert it to a pure oxogen rebreather for no bubbles shallow water spear fishing, is it a diffrent orifice, or can you make the bypass valve work only in demand mode. I have a pure oxogen rebreather (front mount) but if the ray would work, it is so much more comfortable. thanx for any advice.
Drager ray
- Thread starter dz3866
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deepblueh2o
Guest
Ther are a number of ways to convert it to closed circuit. A search on semi closed conversions should pull some up.
caveseeker7
Contributor
IIRC TecMe has a 100% O2 dosing device.
Drager sells a "pool orifice" dosage unit for use with 100% O2. I have one around
here somewhere ...
here somewhere ...
Is that an orifice or just a block-off? I had a dolphin come with a purposely blocked elbow that was in a container marked "Danger pool use only" but it did not seem to be an orificegkndivebum:
caveseeker7
Contributor
Yes, Dräger calls the 100% orifice the pool jet.
They only used to sell it to instructors, I doubt they now ship it with every Dolphin/Ray.
Dave, stock used to be 40%, 50% and 60% orifices, with the port for the optional 32% orifice filled with a blind plug (pretty much a normal-looking screw, though it might have one of Dräger's odd sizes). So if you have the 32% orifice installed you should have that block-off left over.
They only used to sell it to instructors, I doubt they now ship it with every Dolphin/Ray.
Dave, stock used to be 40%, 50% and 60% orifices, with the port for the optional 32% orifice filled with a blind plug (pretty much a normal-looking screw, though it might have one of Dräger's odd sizes). So if you have the 32% orifice installed you should have that block-off left over.
caveseeker7
Contributor
wedivebc:
The Ray's dosage device is different than the Dolphin's, in that the constant
flow orifice is part of the demand valve and is fed from the same hose.
So the "pool orifice" is a real live orifice with a fixed flow rate (I can't find
the blasted thing right now, else I'd look up what it is).
They show up on eBay from time to time.
Thanks gnk. I am going to buy a ray someday just so I can do some dastardly things with itgkndivebum:
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