Nitrox 2 Air

[Puffer Fish]

If you have cleaned equipment, you should only use clean air.

If you don't, then you should have the gear recleaned.

This gets a bit grey with air fills, as for the most part, people don't always know.

Some places, like fill express, only have clean air. Some places have both (my dive shop here, for example).

As all my gear is O2 cleaned, I only put Nitrox in them, sometime partical pressure blended, which means straight 02 is pumped into them first.

I know that Poseidon has one that can use 100% O2, and there must be others.

Any system that uses partical pressure blending should be O2 cleaned...which goes for triox. The reg is not the issue.

Originally Posted by GruPoo

I do not have my Nitrox in yet so please excuse my ignorance.

A Zeagle Envoy is suitable for use with mixes below 40% O2. However, the owners manual says the regulator must be kept "Oxygen Clean" and if it is used with air not certified as clean for enriched air use it must be cleaned again.

What is the deal can you, can't you and/or should you not to? Also who has a regulator that can be used with greater than 40% 02? How does Triox fit into all this? (So many many questions. I will be taking classes for years! )

[Damselfish]

Apparently a number of regulator manuals say that; I suspect large parts of manuals for regulators (and other dive gear) are written by lawyers. I don't know how many people actually pay that any heed for your common 32% mix, probably few.

[maverick]

Still confused?????

[texdiveguy]

Originally Posted by maverick

I just got my regulater out from the shop. And I would like 2 find out if I dive with a tank of Nitrox then surface and do a one hour SI then attach my regulater 2 an Air tank, will that work. Or does the regulater have 2 B O2 cleaned? And do I have 2 specify that B 4 I brought my reg. in the first time 2 B O2 cleaned?

Dude, you can use the 'same' regulator for either AIR or Nitrox of 40% or less, the reg. does not have to be O2 cleaned for these gases.

[CODMAN]

Yes, 40% Nitrox or lower, you don't need to bother with oxygen cleaning your regs or BCs. Tanks are another story. So for recreational use, you can switch your regs and BCs back and forth between Nitrox and air filled tanks without a worry...

Now comes the fun part... That's if you're in the US! If overseas (mainly Europe I believe), the local legislation can change and require cleaning... But this isn't a physical reason (you have no more risks in Europe than in the US when using 40% or less), it's more a legal issue. Because of this (the european market) many manufacturers put disclaimers for having their gear oxygen cleaned for any Nitrox use.

But to recap, in the US, Canada, and Caribean, you can switch your regs and BCs back and for between Nitrox and air filled tanks without a worry...

Cheers!

[maverick]

Air 2 Nitrox no problem. Up 2 40% sounds good 2 me. Thank U

[BouzoukiJoe A.K.A. wrecker130 AKA Chuck Norris AKA joeforbroke (banned)]

If you use Nitrox on something not designed for high levels of O2 you might find that some of the parts age faster due to oxidation. Be especially diligent on servicing.

Beside poseidon I know that Apeks has 100% O2 regulator. The one with the green face plate. Don't remember the model number.

[maverick]

I use a Titan LX and have it serviced and inspected every year.

[BouzoukiJoe A.K.A. wrecker130 AKA Chuck Norris AKA joeforbroke (banned)]

Originally Posted by maverick

I use a Titan LX and have it serviced and inspected every year.

Hakuna Matata. Breath nitrox all you want.

The Titan LX (like most good regs) is compatible with EAN40 right out of the box.

[CompuDude]

Originally Posted by maverick

Air 2 Nitrox no problem. Up 2 40% sounds good 2 me. Thank U

You may want to consider taking your Nitrox certification class again. Your instructor really should have taught you this stuff. At a minimum, it should be in your course book.