Thanks for the info Marc! I checked Ebay and found a couple refurbs in the $45 range.....hard to beat that price for a 540 reg.....

ETA: I wonder if there would be enough interest to do a group buy to get the lot of 10 price? Thoughts?

Hi Marc,

I'm a newbie to the board, hubby has had ch for 20+ years.  Spent today re-reading all the 02 info on this site...I learned alot!  Just ordered Optimask, and I need to get him a regulator, 15 lpm not doing it anymore and want to go higher than 25.  Read your post on your fave cheap 02 reg...and googled it.  Found one at comfortgurus.com but I have no clue what I'm buying (different info on each site)..the one I'm looking at looks like your pic and is called RO 87-RO.  The product is RHE 87-RO and costs $66.68.  Does this sound like what you bought? It fits CGA 540.  (sorry to be such a girl but this is not my specialty!  high pressure/low pressure...it's all greek to me.)  My husband could figure this out, but it's been a HORRIBLE CH month and we're both goofy    from only a few hrs of sleep ea nite because of this "beast"...he's barely functioning and still trying to work, as am I, so I "take care" of things like meds, etc... I went to ebay but again, too many different types and some only go up to 15.  Still don't understand difference between the lpm vs psi flow but read you go to 5 psi and this goes to 60(? idk ) Any info would be GREATLY appreciated.  Thank you so much and be well. (He has the large M size tank)

You have good questions.

The only thing that you have to worry about is getting the right kind of regulator to fit the tank that you use.

See this link that I put together awhile back: Multimedia File Viewing and Clickable Links are available for Registered Members only!!  You need to or

The regulator that I listed is the same one that you found online. Remember that it is a welding regulator so it will fit all welding oxygen tanks AND LARGE medical oxygen tanks. It WILL NOT fit smaller medical oxygen tanks like the common “E” size tank.  The CGA 540 refers to that type of fitting.

The other type of tank is often called a “yolk” type fitting or CGA 870.  It is difficult (very expensive) to find regulators CGA 870 that go above 25 lpm.

Remember that “liters per minute” is only important to know when buying a medical regulator. As you have found out, you have one that limits you to 15 lpm. The next one up will limit you to 25 lpm (which might work)

All welding regulators can provide waaaaaaaaaay more than he could ever use, so don’t worry about the numbers – they are completely unimportant – unless you actually plan to use it with a cutting torch 

Marc

his wife wrote on Sep 8^th, 2010 at 10:41pm:


Stick around, and you will get that chance!  We will be happy to have the help.  Many tend to try to forget CH in between cycles.  I'm not being critical here, I wish I could do the same, but the ones who stick around when they don't need the help personally make a BIG difference.  (They also are in a lot better position when the beast does come back because they have been learning as new things come out.  Hint, Hint )

Jerry

Are you saying a medical regulator for the larger tanks will also fit welding tanks?  I thought there was an adapter that had to be used to retrofit them.

Jerry

Marc wrote on Sep 9^th, 2010 at 2:37pm:

Yer like a freakin oxygen god.

             Potter

Is it true that buying welding or industrial oxygen is just as good (and much less expensive) as buying medical oxygen?  I've read that comment on this site and would like confirmation.  It sure would save me a bunch of money, but I am also not interested in risking my health, right?

thanks in advance for any informed responses.