runsongas
Contributor
why don't you want to use nitrox? is it just that your local shop is far away? if you already have your own compressor, nitrox sticking your own fills shouldn't be that hard.
Source for 20 foot LP hose / in water oxygen Deco
- Thread starter Wallowa
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Understood...for one reason I dive deep, but mostly I live and dive by the axiom, "keep it simple"...has worked for 69 years of diving...
The solution here is very simple, in fact way simpler than trying to build a hookah setup and breath pure O2 on a 20-25ft hose.
Build a nitrox stick for your compressor. It will allow you to easily blend Nitrox 32-36% with ease. You do not need to worry about a dive shop and there is no need to O2 clean your tanks since the tanks themselves will never see pure O2. You already own a compressor; This is honestly the easiest approach.
Depending on your depth, dive Nitrox 32-36% for all your dives and set your computer to something conservative or dive air profiles with nitrox (making sure not to exceed the MOD of the mixture itself)
If you want to breath pure O2 for decompression/safety stop then I cannot see anything wrong with that (provided you have the training and/or understanding) however If you are just doing NDL (no decompression limit) dives there is no need to over complicate it.
What are the average depths that you will be diving? What are your anticipated dive times?
Originally I thought you were just trying to build an emergency oxygen setup for a boat to hang at 20ft which is common on some Great Lakes charters. This setup more or less involves an large oxygen cylinder on a boat with a 25ft hose for emergency decompression.
Build a nitrox stick for your compressor. It will allow you to easily blend Nitrox 32-36% with ease. You do not need to worry about a dive shop and there is no need to O2 clean your tanks since the tanks themselves will never see pure O2. You already own a compressor; This is honestly the easiest approach.
Depending on your depth, dive Nitrox 32-36% for all your dives and set your computer to something conservative or dive air profiles with nitrox (making sure not to exceed the MOD of the mixture itself)
If you want to breath pure O2 for decompression/safety stop then I cannot see anything wrong with that (provided you have the training and/or understanding) however If you are just doing NDL (no decompression limit) dives there is no need to over complicate it.
What are the average depths that you will be diving? What are your anticipated dive times?
Originally I thought you were just trying to build an emergency oxygen setup for a boat to hang at 20ft which is common on some Great Lakes charters. This setup more or less involves an large oxygen cylinder on a boat with a 25ft hose for emergency decompression.
With respect, building a nitrox stick and diving nitrox is far simpler than building an O2 hookah rig. I'd just like to understand your potential application/usage better for the rig that you're hoping to build.Understood...for one reason I dive deep, but mostly I live and dive by the axiom, "keep it simple"...has worked for 69 years of diving...
I never described or asked for information concerning a Hookah rig....this is a simple safety stop use of 100% oxygen....only involves a few pieces of gear; a second stage scuba reg at 20fsw or shallower at altitude, a 20+foot LP hose [Intermediate Pressure] to a surface oxygen bottle...not at all a Hookah rig or Brownie’s THIRD LUNG™ - Tankless Dive Systems rig...Why? Look up "Oxygen Window" the increase in gas tension at greater than 1ata of oxygen increases removal of nitrogen nuclei, bubbles and reduces chance of them forming before you surface ..all within the NDL.
Diving compressed air is 'far simpler' than diving Nitrox and has fewer limitations...I have done both for years and no longer want the complication or limits of Nitrox.
Please, anyone using this setup recommend a regulator and oxygen tank valve that you have found works...thanks for any answers.
Still Kicking
Contributor
"a second stage scuba reg at 20fsw or shallower at altitude, a 20+foot LP hose [Intermediate Pressure] to a surface oxygen bottle."
This IS a hookah rig LOL
XS Scuba sells reg hoses 25' and up.
This IS a hookah rig LOL
XS Scuba sells reg hoses 25' and up.
I think you should listen to the other folks on this thread. Underwater use of 100% O2 is not something to undertake lightly, especially solo.
However, if you still want to set up for 100% using a scuba regulator (perhaps for surface use), you should start with some info on O2 cleaning. If you go this route, it's probably best to purchase a Nitrox Ready reg and dedicate it for this usage. Any "Nitrox Ready" reg will work, you should never be using it below 20' or while working so high performance is not a requirement.
Oxygen Cleanliness & Compatibility FAQ | Dive Gear Express®
www.divegearexpress.com
As to obtaining O2. This comes up in aviation all the time. You can do your own searching, but maybe start with the following links. Since you do your own fills, I'm sure you can figure out how to transfill from a tank of welding O2 or rig up something if you can find a supplier who will agree to fill your scuba tank directly. Again, you will most likely want an appropriate dedicated tank and valve.
Are Medical and Welder's Oxygen Different Than Aviation Oxygen? - MHOxygen
Q: Is it true that medical and welder’s oxygen differ from aviation oxygen? A: There are no different grades of oxygen being produced or contained in cylinders under DOT regulations. Contrary to common myth, medical oxygen contained in a medical cylinder is no different than that contained in a...
www.mhoxygen.com
Oxygen is oxygen
Oxygen is oxygen is oxygen. There is a lot of misinformation out there about medical oxygen versus aviator breathing oxygen versus industrial-grade welding oxygen, but the bottom line is that is all three are the same.
www.aopa.org
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