50% EAN deco tank setup question: SPG need O2 cleaning?

[pakman]

Well the 1st and 2nd stage are off for servicing and O2 cleaning. I was wondering what is involved in cleaning a spg other than replacing O-rings. Do they take the spg apart to clean it? The spg is new...

 

[nadwidny]

Any device or piece of equipment that is to be used with any mix greater than 40% O2 should be prepared for O2 service.

the K

Since they can't be taken apart, how is an SPG prepared for O2 service?

 

[Dive-aholic]

Well the 1st and 2nd stage are off for servicing and O2 cleaning. I was wondering what is involved in cleaning a spg other than replacing O-rings. Do they take the spg apart to clean it? The spg is new...

If the spg is new, then you shouldn't have a problem...as long as it's never been used with non-O2 compatible air. There isn't a practical way to O2 clean a spg. Buy one and dedicate it to your deco bottle.

 

[karstdvr]

Since they can't be taken apart, how is an SPG prepared for O2 service?

Every O2 combustion I've seen has occured in the valve,so I really don't stress as much about the spg and regulator itself. I do take care of the valve on a regular basis.

 

[limeyx]

If the spg is new, then you shouldn't have a problem...as long as it's never been used with non-O2 compatible air. There isn't a practical way to O2 clean a spg. Buy one and dedicate it to your deco bottle.

Good point. Also make sure to ask your dental hygiene-ist for an "O2-cleaning" at your very next appointment (and then don't breathe any non-O2-clean air between appointments...)

 

[nadwidny]

Every O2 combustion I've seen has occured in the valve,so I really don't stress as much about the spg and regulator itself. I do take care of the valve on a regular basis.

I've seen a case or 2 of a first stage combusting, and of course a couple of valves, but like you I've never heard of an SPG. And I've certainly never heard of any process to take an SPG to "O2 service". So I'm wondering how those that call for an "O2 service" condition for an SPG, suggest it should be done.

 

[in_cavediver]

I've seen a case or 2 of a first stage combusting, and of course a couple of valves, but like you I've never heard of an SPG. And I've certainly never heard of any process to take an SPG to "O2 service". So I'm wondering how those that call for an "O2 service" condition for an SPG, suggest it should be done.

Its easy to O2 clean an SPG. Simply flush enough O2 through it, fast enough and at a high enough pressure to combust all of the contaminents. Burn them all off, then its clean enough..

In reality, its more of selecting the gauge than cleaning it. I wouldn't grab an SPG from a reg in rental for 10 years and plug o2 into it. I would grab a new SPG and use it straight out of the box though.

 

[nadwidny]

Its easy to O2 clean an SPG. Simply flush enough O2 through it, fast enough and at a high enough pressure to combust all of the contaminents. Burn them all off, then its clean enough..

That's pretty much the way I do it! If it survives that then I consider it "O2 service" and away we go.

In reality, its more of selecting the gauge than cleaning it. I wouldn't grab an SPG from a reg in rental for 10 years and plug o2 into it. I would grab a new SPG and use it straight out of the box though.

Which pretty much sums up the options one has.

However I still would like to find out from those that say we have to have an "O2 service" SPG for above 40% to tell us how one goes about getting an SPG into that condition.

 

[pakman]

So I'm wondering how those that call for an "O2 service" condition for an SPG, suggest it should be done.

that's what I was wondering about....

Its easy to O2 clean an SPG. Simply flush enough O2 through it, fast enough and at a high enough pressure to combust all of the contaminents. Burn them all off, then its clean enough..

:lol:


anyways, thanks guys for the feedback...

 

[onohunter]

I've never seen anything blow however I heard the valves, 1st stage and booster pumps are the main culprits.
that being said, and I'm sure my fans will love this...
I've used new 40% spg's with no problems and a ten year old mares second stage with viton O rings and a good simple green scrubbing with out problems.
WARNING- I am not a professional and am not stating this is safe. just that it happened to be safe when I did it.